I've changed the thread title to open this up as a general FPV speed fun thread.
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Was in the workshop with a mate last night building some planes and drinking a few shandies... I start messing around with a motor calc webpage to see how different props would effect our FPV wings (we're running the same powertrains)... the calc is pretty spot on in estimating top speeds, amp draws, flight duration etc.
While messing I then wonder what speeds I'd be able to get from my 3s 2200, the 25amp esc I have and a higher kv motor. A few clicks later and I find that with a 2200kv 25amp motor spinning a 5x5 prop will give me around 145mph on the flat...
Another few clicks later and I've bought a motor off Giant Cod while spouting how cool it'll be to ground bust at those kinda speeds.
This morning I realise what I've done, I didnt need this motor, yeah it'll be cool to fpv at those speeds but right now I could have done with other stuff for my money and to do this I'll need another vTX... bugger.
Oh well, its done now, time to find or design a homebrew FPV speed machine!
My adventure will be documented in this thread... let the fin begin. :D
Oh heres the motor I got...
http://www.giantcod.co.uk/2217-2200kv-brushless-outrunner-motor-p-402976.html (http://www.giantcod.co.uk/2217-2200kv-brushless-outrunner-motor-p-402976.html)
I noticed that it is out of stock. Did you get the last one?
yep! another thing that rushed me into the purchase while all excited.
Lol, your on a roll with this pending lark Steve. Im impressed :)
This should be a fun project. So what flight durations are you looking at ?
Its butt clenching ground busting speed I'm after duration is waaaaaayyyy down the list of prioritys :)
Prolly get 4mins or so of WOT... plenty to scare myself!
Bloomin eck Pasty nearly 150mph!!! youve watched top gun too many times mate lol. Hope youve got good reflexes :o
Good reflexs = check :)
Whether I'll get close to the 145mph the calcs gave me is to be found out... I think the key to it is going to be keeping the plane small and light.
My flying buddy is going to make one with a similar powertrain so that we can chase and race :D
hmmm done some reading and I think the calc must have been wrong... 145mph on a 25amp motor and ESC powered by 3s is way off me thinks.
Well the motor is on its way so let see what I can achieve...
Nutter.
I'd say calcs wrong... But go for it
I managed 168kmh in my FJ. but that was with a bit of a dive and pulling 30 and a pan/tilt setup on top.
I re-ran some calcs last night and 120mph is more of a real target... this is on the flat without a dive...
But now Shikkers has offered up a speed to beat... 104mph is the first mile stone :)
To maximise efficincey and thus speed the plane will be a conventional layout (less drag than a wing/delta) with prop up front (no folders here guv). The camera will be heavily recessed into the fuz to futher cut drag so the view out front isnt going to be great but thats not what I'm after and personally think that the lack of view will add to the racer feel :D
I was going to have a night out of the workshop but with the motor turning up today I'm thinking I might sneak down later and cut my wing cores :)
ok, to give you an idea of what the planes going to be like, heres a nice design similar to what I was thinking... but with a camera with streamlined canopy on top ;)
A span of 30-40", the smaller it is the easier it'll be to make it rigid but the harder it'll be to keep the wing loading in check and fit the gear.
(http://static.rcgroups.net/forums/attachments/1/3/4/8/5/a86236-124-az-shrike%202.jpg?d=1053300601)
His build thread and plans:-
http://www.rcgroups.com/forums/showthread.php?t=118633 (http://www.rcgroups.com/forums/showthread.php?t=118633)
Fast and Low - got to be good fun. Go for it. Looking forward to the vid already!
i like your thoughts steve i would like to see a camera on a hotliner aswell or maybe something like my little favourite the st blaze by ripmax i love that little bird :)
Remember to take a carrier bag for bringing it home :D
PZ Habu + Radar Gun = 112MPH!!! (http://www.youtube.com/watch?v=5Jq92XPv66g&NR=1&feature=fvwp#)
This it a speed test for a Habu Jet it reaches 112mh, are you shore that you will get that sort of speed, It will be craze controlling it with the tunnel effect of camera views
That vid makes it look much faster, I've done 100mph with my scout bee after a dive and it really doesnt feel that fast or hard to control... its a real rush busting ground at that kinda speed :D
To be honest I dont know what I'm going to get with this setup but its going to be interesting to see how much I can get and I've got no apprehension about being able to fly it.
If it doesnt go fast enough I'll try more power :)
Heres how to work out your true max speed. Its a listens to the motors sound and works it out from there. Very accurate
http://www.rcspeedo.info/ (http://www.rcspeedo.info/)
Your video has to be recorded from the ground though
calling Angelos... Ian mentioned you too are looking at a bit of speed FPV...
*throws down his gauntlet*
Lets see what we can do!.... only rule is the speed needs to be measured on the flat after a flat turn... no dives.
I here you got way more power than me... almost double! I hope my homebrew airframe, lack of drag and more efficient prop placement makes up for my lack of poke... if not I'll get me some more power ;D
oh and to make a more impressive video it must be flown at less than 10ft :P
Quote from: Pasty on May 06, 2011, 02:14:56 PM
calling Angelos... Ian mentioned you too are looking at a bit of speed FPV...
*throws down his gauntlet*
Lets see what we can do!.... only rule is the speed needs to be measured on the flat after a flat turn... no dives.
I here you got way more power than me... almost double! I hope my homebrew airframe, lack of drag and more efficient prop placement makes up for my lack of poke... if not I'll get me some more power ;D
That would be cool. Maybe a race at FPV Bounce? BTW, my FunJet Ultra just arrived today. I intend to make it fast but not necessarily the fastest possibly. I may choose a motor with a bit of compromise on speed to get efficiency and a bit longer flight times.
-Angelos
This is the motor I've got in my wing. Running a 7x6 prop.
Hmmm... So who is going to reach 200mph FPV style first?
Actually, I think I might just hold the LOS record here... I've flown a Boomerang Elan at 200mph before...
Quote from: Angelos on May 06, 2011, 05:30:29 PM
That would be cool. Maybe a race at FPV Bounce? BTW, my FunJet Ultra just arrived today. I intend to make it fast but not necessarily the fastest possibly. I may choose a motor with a bit of compromise on speed to get efficiency and a bit longer flight times.
-Angelos
game on!
If I make FPV bounce I'm defo up for a race, pylon stylee...
reet... tonight is the night when things start happening...
First up Wing cores cut, slap in the spars, whack in the sub te ready for some balsa ailerons, I'll sheet some blue foam to make a light box fuz with a set of balsa tail surfaces... job done :)
Oooh. Sounds interesting.
Can I challenge you on this? If I won I would be very :).
progress...
I went for a wing section and plan form (shortened) that was to hand, its TP42, a symmetrical aimed at aerobatic gliders, its thin so we'll see how it performs, I would have probably liked a bit less root chord.
A low wing so that I got plenty of space up top for mounting camera and video gear.
Thats a 3s 2200 lipo to give you an idea of size, its got a 32" span.
(http://s3.postimage.org/2btbobv7o/SANY0272.jpg) (http://postimage.org/image/2btbobv7o/)
(http://s3.postimage.org/2btgmxwp0/SANY0273.jpg) (http://postimage.org/image/2btgmxwp0/)
(http://s3.postimage.org/2btn93ao4/SANY0274.jpg) (http://postimage.org/image/2btn93ao4/)
Nice, looks spot on Steve
Not bad for an afternoons work is it... Oh... estimated weight is 500-600g all up, its 400g at the moment without final wing work and video fear.
I've changed the thread title to open this up as a general FPV speed fun thread.
Just a bit of friendly fun...Lets see what we can do!
Come on Angelos.... get involved... what you got building and what you aiming for?
I'm sticking with my original ethos of seeing what I can get out of my current pack size of 3s 2200.
Ok, we have a name...
you ready for this?!
Project Go Well Quick ;D
Go Well Quick 1 is a pure raw test bed for the concept, power train, planform and wing section.
I've already got plans for Go Well Quick 2, it'll have an enclosed motor with spinner upfront to reduce alot of the forseable drag around the square blunt nose, I'm going to look into faster wing sections and look at a higher aspect ration wing.
looks good mate, :) get a fan in front of it and get some smoke going over it see were the drag is.
gordon
Go well quick ???? :) Of all the catchy names, lightning, sonic, bullet ........ you picked well quick :) lol
Already looking into a mk 2, man your "well serious" ;)
Quote from: Pasty on May 09, 2011, 10:17:44 AM
I've changed the thread title to open this up as a general FPV speed fun thread.
Just a bit of friendly fun...Lets see what we can do!
Come on Angelos.... get involved... what you got building and what you aiming for?
I'm sticking with my original ethos of seeing what I can get out of my current pack size of 3s 2200.
Top secret! Rockets below the wings and everything!
Just kidding, I think I will go for something mid-range to keep it efficient and get longer trips. So I don't think it will be one of the fastest funjets. I will be happy at 120mph+ if that helps to keep the trip distance a bit longer. If it makes no notable difference I am going for 200mhp+!
-Angelos
Quote from: Coyote on May 09, 2011, 09:16:35 PM
Go well quick ???? :) Of all the catchy names, lightning, sonic, bullet ........ you picked well quick :) lol
Already looking into a mk 2, man your "well serious" ;)
ehehe, I like cheeky naff names :)
bit more progress last night, sanded the tail surfaces all sleek, tail end stuck together, stuck the spars in the wing (3mm carbon tube opposed top and bottom), got the motor & ESC all wired up and tested (man does that motor scream).
Tonight its tart up the wing ready for servos and ailerons (sand, sub TE etc), light ply reinforcement to the wing saddle, PU varnish the balsa tail surfaces and attach to fuz, stick in elevator servo and link up.
onwards!
Hi, I'm steves speed crazed mate! I've introduced myself but have not posted recently.
We got a lot done last night. I'm onto final assembly as is steve. Things like wing mounting bolts and the like. They are looking spot on. 32" 650g (with fpv gear) speed machines with 2200 mah behind them!
yeah, we're almost there...
My fuz is sorted, left do do is cut ailerons, mount wing servos and sort push rods, hopefully get that sorted later today.
Pics of the build to date to come.
Its a bit to windy for FPV, and the dynamic soaring is off slope...
Build time!!!!
Pitty its to windy for a maiden, where is that COFG calc...
Hows those photos coming along steve :-\
I've just maidened mine out the back line of sight in 20-30mph wind!
Flies real good, its small so is twitchy! Gonna be a totally different ball game with this small fast thing!
Landing was uneventful! ;D
Well here they are, straight forward simple airframes knocked together in a few hours, Garys is the same as mine apart from he went for a top wing and shaped his fuz a bit differently, we're running the same motors, packs etc.. they even came out the same weight (550g).
Initial pre FPV gear speed runs should happen today, we're going to try the Doppler software for smartphones that Ian linked to above.
The first milestone is 100mph on the flat.
I best get a second vTX ordered! :)
(http://s1.postimage.org/zzxh0t38/SANY0275.jpg) (http://postimage.org/image/zzxh0t38/)
(http://s1.postimage.org/10043672c/SANY0277.jpg) (http://postimage.org/image/10043672c/)
(http://s1.postimage.org/100apbl1g/SANY0278.jpg) (http://postimage.org/image/100apbl1g/)
(http://s1.postimage.org/100e0ea10/SANY0279.jpg) (http://postimage.org/image/100e0ea10/)
(http://s1.postimage.org/100kmjo04/SANY0280.jpg) (http://postimage.org/image/100kmjo04/)
(http://s1.postimage.org/1012tghfo/SANY0282.jpg) (http://postimage.org/image/1012tghfo/)
(http://s1.postimage.org/101g1r9dw/SANY0283.jpg) (http://postimage.org/image/101g1r9dw/)
Wow! very nice, It takes me a few hours to open the box of a new kit let alone build one from scratch. Following this thread with great interest.
we've scratch built for years, can build stuff like this with our eyes closed :)
i will have a new wing soon to enter in this fpv speed challenge ;)
Cool, get involved Matty! put mph were your mouth is :D
Ill give you a speed challenge in a dive off course.. :)
We got out again this avo. I was getting no feedback from spedorc! Looked like it was going 120mph maybe.
Very twitchy at that speed so i think the cofg calc's gonna have to be a starting point. I'll try moving the battery forward some.
I'm very happy with it. A few nights work down steves workshop has given me a suberb line of sight plane. Very solid at half throttle and a lot of fun!
Sucess! Now to Speed FPV it! :o
They went very well, even in the gusty 20-30mph winds, Garys was quite a bit faster than mine so we've got to find out whats going on there, first stop is to try his prop... after that the only differences are his fuz is taped with a slightly smaller cross section to the nose. I'll check the timing etc on my esc, I dunno whether that will make any difference?
Ordering another vTX as I type so will be a week or so before I get her FPVed up. Cant wait to cover some ground with her :D
My FPV speed machine test video: MOV03567 (http://www.youtube.com/watch?v=1UDeUW3Ruf0#)
;D ;D ;D ;D ;D ;D ;D
Yup, i think thats officially fast :) Steve, what are you doing, he`s wiping the floor with you already lol
ehehe I like a bit of competition and I dont see anything coming from anyone else at the mo :D
My motor didnt sing like Garys did, must be either the prop or ESC.
Vtx and 45amp ESC ordered...
So... calling all yee leccy powertrain boffs.
Whats the best way to make a small leccy plane go quick?
Higher KV motors spinning a small prop real fast? if so, whats a good KV and amp to be looking at? using 3s and 4s packs again... no crazy 6s stuff here.
My Bros blizzard is pretty damn fast on a 1400kv 35amp motor spinning a 9x6 on 3s, maybe thats the way to go with say a 9x8 or the like.
thoughts?
The Worlds Fastest RC Airplanes Close to 400 mph (http://www.youtube.com/watch?v=Oix6sHKzOLU#ws)
crazy fast rc plane 5000kv (http://www.youtube.com/watch?v=Y6vWavvB9nI#ws)
Have a look Steve, thy may give you some ideas.
That DS vid is old news now, they're going even faster! I do a bit of dynamic soaring myself, I'm certainly not going to give it a go via fpv tho!
if only there was a bit more info on what that leccy plane was running...
cheers gordon
Just checked my GWQ and I think I found why it was slower than Garys, the split ring had come out of its slot on the shaft allowing the outer case to pull off....
Quote from: Pasty on May 16, 2011, 01:54:23 PM
So... calling all yee leccy powertrain boffs.
Whats the best way to make a small leccy plane go quick?
Higher KV motors spinning a small prop real fast? if so, whats a good KV and amp to be looking at? using 3s and 4s packs again... no crazy 6s stuff here.
My Bros blizzard is pretty damn fast on a 1400kv 35amp motor spinning a 9x6 on 3s, maybe thats the way to go with say a 9x8 or the like.
thoughts?
This seems to have some good info.
http://www.rcgroups.com/forums/showthread.php?t=939982 (http://www.rcgroups.com/forums/showthread.php?t=939982)
so, we're all about keeping our planes light with high KV motors spinning a small high pitch prop.
For the packs we're using I think we're right with the size and type of plane, need to get me a pokier motor :D
http://i1217.photobucket.com/albums/dd397/itsalivecollins/plane.jpg (http://i1217.photobucket.com/albums/dd397/itsalivecollins/plane.jpg)
Hi Steve, I designed this and laser cut it out of thin balsa wood will this technique mack it lighter.
(http://s4.postimage.org/2mx896oro/plane_2.jpg) (http://postimage.org/image/2mx896oro/)
You have the right idea: high voltage or high kv motor, small diameter, big pitch prop. But from the video if you want to go even faster you have to delete the motor, cool.
I have a LR1A Pogo electric pylon racer that uses a E-Flite Power 25 1250kv motor driving a 8x8 prop from a 40C 2650 mAh 4S battery. It sings nicely but still only does 100-110mph. It is the basic NMPRA approved set-up for EF1 electric pylon racing. It is an absolute bitch to take-off as the torque reaction is huge but good fun for about 4 min then a landing is required. My knees shake so I cannot imagine flying it FPV but never say never.....
Quote from: g.collins on May 16, 2011, 11:09:39 PM
http://i1217.photobucket.com/albums/dd397/itsalivecollins/plane.jpg (http://i1217.photobucket.com/albums/dd397/itsalivecollins/plane.jpg)
Hi Steve, I designed this and laser cut it out of thin balsa wood will this technique mack it lighter.
(http://s4.postimage.org/2mx896oro/plane_2.jpg) (http://postimage.org/image/2mx896oro/)
Very nice gordon, that would certainly make a light wing and fuz, it would be quite a bit more fragile than the foam approach, if I can get the planform working well it might be worth a short.... altho I havent balsa bashed since I built my first trainer!
Quote from: electricmick on May 17, 2011, 12:04:31 AM
You have the right idea: high voltage or high kv motor, small diameter, big pitch prop. But from the video if you want to go even faster you have to delete the motor, cool.
I have a LR1A Pogo electric pylon racer that uses a E-Flite Power 25 1250kv motor driving a 8x8 prop from a 40C 2650 mAh 4S battery. It sings nicely but still only does 100-110mph. It is the basic NMPRA approved set-up for EF1 electric pylon racing. It is an absolute bitch to take-off as the torque reaction is huge but good fun for about 4 min then a landing is required. My knees shake so I cannot imagine flying it FPV but never say never.....
Ahhh yes, of course, voltage... so for cheap speed we're defo barking up the right tree, keep it small, light running higher KV motors.
We're working on hiding the motor, I started work on fuz MK2 last night and ordered a spinner to streamline the entire front end. The MK2 fuz will also be big enough to house a 4S :)
so... some minor repairs done last night, I've sorted the motor out but it still doesnt spin as freely as garys but it seemed to spin up ok so we'll see how it gets on.
This evening we're headed out for some more flight testing, Gary is trying to tame his down to make it fpv friendly (not speed but handling) and I'm simply trying to get mine to go as fast.
Will report back later.
Ha steve
I have just fond this setup at Range Video. I couldn't resist it, its so small and light, I'm going to stick it on something small, plane that is.
2g for the transmitter and 1g for the camera and it will all run of a single cell lipo, it will keep the wait down in your speeder, less wait more speed, well worth a look
Camera, Receiver and transmitter all for £77.57 delivered
http://www.rangevideo.com/index.php?main_page=product_info&cPath=35_59&products_id=217 (http://www.rangevideo.com/index.php?main_page=product_info&cPath=35_59&products_id=217)
http://www.rangevideo.com/index.php?main_page=product_info&cPath=6&products_id=212 (http://www.rangevideo.com/index.php?main_page=product_info&cPath=6&products_id=212)
http://www.rangevideo.com/index.php?main_page=product_info&products_id=213 (http://www.rangevideo.com/index.php?main_page=product_info&products_id=213)
This is a transmitter module, not a complete FPV transmitter. This will need to sit on another PCB with the appropriate regulators, antenna connector (or other appropriate 50Ohm feed to the antenna) and possibly needs some AC coupling capacitors on the video and audio lines.
-Angelos
it look like some capacitors a battery connector the supplied antenna and a bit of soldering, and bobs your uncle, that's whats advertised on their site, thy recon £3 to finish. lol, if not I will get my electronics friend on the case
Quote from: g.collins on May 17, 2011, 09:42:51 PM
Ha steve
I have just fond this setup at Range Video. I couldn't resist it, its so small and light, I'm going to stick it on something small, plane that is.
2g for the transmitter and 1g for the camera and it will all run of a single cell lipo, it will keep the wait down in your speeder, less wait more speed, well worth a look
Camera, Receiver and transmitter all for £77.57 delivered
http://www.rangevideo.com/index.php?main_page=product_info&cPath=35_59&products_id=217 (http://www.rangevideo.com/index.php?main_page=product_info&cPath=35_59&products_id=217)
http://www.rangevideo.com/index.php?main_page=product_info&cPath=6&products_id=212 (http://www.rangevideo.com/index.php?main_page=product_info&cPath=6&products_id=212)
http://www.rangevideo.com/index.php?main_page=product_info&products_id=213 (http://www.rangevideo.com/index.php?main_page=product_info&products_id=213)
Hi Gordon
I've been very tempted by their small stuff before but my leccy skills are lacking, I wouldnt know where to start with getting that vTX module up and running. *scared*
My only reservation about that tiny camera is its CMOS, will it suffer from the vibration and go all jello? I'd love that gear on a small slow fly floater type plane I could cruise around my street :). I'm mounting budget gear on it to start with, its likely to end its short life by being slammed into terraferma :D
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After sorting the motor and tidying up some battle scares I took the GWQ out for another test yesterday... and it was only slightly quicker... grrrr!
Last thing before I start swapping parts to find out whats holding it back is the ESC motor timing was default as low so I've ramped that up to high... will it make much difference? we'll find out later.
Even tho shes not going light speed just yet the planform works really well, very smooth yet rolls, banks and turns as hard as you like... great fun little plane.
If I manage to get it going I will post up how, I'm going to see a friend today and show him, the diagrams, he's good at that sort of thing.
I'm glad she flies smooth, good luck with the motor timing
Yeah I really hope the motor timing is going to sort it. We have same motor and plane planform so it must be something like the ESC holding it back.
I've got major pitch issues ONLY at WOT at 90% shes stable in flat flight, put up to 100% and it will dig in and start pitching. Wingwash? Its going strait over the elevator atm for ease of build. Woud a low elev. work as well as a high elevator??? I think not... I might go low wing like steves to fix the problem.
Any thoughts guys? Its only at WOT and flat flying its pitchy.
So if this evening any of your hear a sonic boom or the biggest crashing sound you've ever heard.... that'll be us :D
Bagsie me being the sonic boom! ^-^
I fault that they stopped blasting at The Quarry, Castle-an-Dinas, :laugh:
I've sorted her!!
Been out testing, gary sorted his pitching with moving therod out a hole on the elevator horn. After an initial disapointment with the high timing I hit the workshop and stuck on the same prop as Gary, the one I had before was the same diameter and pitch but a different make...
holy mumma did the other prop make a difference, she belts around like Garys now.... well chuffed. :D
Now for fpv gear
Quote from: Angelos on May 17, 2011, 11:38:28 PM
This is a transmitter module, not a complete FPV transmitter. This will need to sit on another PCB with the appropriate regulators, antenna connector (or other appropriate 50Ohm feed to the antenna) and possibly needs some AC coupling capacitors on the video and audio lines.
-Angelos
Hi Angelos, I found another transmitter, its the same as the one I already found, but with all the work don, it doesn't look that hard to complete min if its the same and it doesn't look like I need a separate PCB. this could be good news for me.
thanks Gordon
http://www.fpvhobby.com/93-200mw-58ghz-a-v-transmitter.html (http://www.fpvhobby.com/93-200mw-58ghz-a-v-transmitter.html)
sorry Steve its not going to help you with your speed quest, I'm glad your latest tests are more promising. :)
You crack on Gordon, I'm not one for stifling discussion.
and if I wanted a super small/light vtx for my speed quest thats it right there ;)
Well, I bought the Typhoon 2W-25 for the Junjet which I was planning to run from a 4S. But... I found two brand new 6S packs in my stash and I am tempted! I just hope the Junjet can carry them. Something tells me I may be setting new FPV speed records soon :D
-Angelos
Damn it Angelos that really is a speedy motor, we're going to have to up our game but we certainly wont be pushing to 6s!
Hows the assembly going?
After our initial excitement we need more, speed runs last night were only giving us around 90 on the flat... not bad for a cheap setup but certainly not as fast as we're aiming for... we need 100+!
I cant afford sparkly motors like Ange but I'll try and see what we can do on a budget... inrunners seem the way to go?
You should set a budget limit, its easy to throw lodes of cash at a problem if you have it, just look at the haves and have note's in F1.
regards
If you set the budget limit it is likely that you will be racing on your own and still someone else will have the fastest FPV flight. See what happened to F1: Renault join F1 pull-out threat (http://news.bbc.co.uk/sport1/hi/motorsport/formula_one/8048112.stm#id8040000/8046900/8046917-audio)
Anyhow, until I found the 6S pack yesterday I didn't even think I had a chance as the expected speed with the 4S is around 120mph which is peaty docile. It will be a good laugh regardless who wins it... not to mention we will be flying circles around the Skywalker boys :D
-Angelos
I'm not bothered about winning, its the journey thats fun :)
I'm more competeing against myself and the limits I put upon me e.g. low budget... I'll get the warm feeling of satisfaction (not p*ssing my pants) if I can get close to what angelos is putting together.
I'm looking at the black mantis motors on GC... too much KV?
http://www.giantcod.co.uk/black-mantis-b2846-4800kv-inrunner-brushless-motor-p-404590.html (http://www.giantcod.co.uk/black-mantis-b2846-4800kv-inrunner-brushless-motor-p-404590.html)
But thats what I'm after isnt it, a small prop spinning like hell :)
FPV gear strapped on (literally), not the best but will do0 for testing.
Pics to come :-[
Initial testing shows these planes to be ideal stable good gliding speed machines! 90mph is still going to be quick!
I've got a few bits to sort on my fpv gear install and then i'm ready to fly in some wind! :laugh:
so... Go Well Quick MK1 has been FPVed.... into the ground :D
I didnt get very far before she started to twitch, buck and squirrel, sure signs of loss of control... a few seconds later and she met ground at quite a rate.
The fuz snapped in two behind the wing and tail servo stripped but the wings are fine which is cool.
I could fix this fuz but its just as easy to make another... a better one :)
Now to find out what caused the loss of control... deer stalker on!
Garys flew fine, defo not as quick with our cams simply slapped ontop so we got some drag reduction to do.
Ah sorry to hear that Steve, are you on 35 ?
It was meant to bee Steve, the gods know that the next one will be better, stronger, faster
yeah on 35, I dont think thats the problem tho... havent had issues with it to date. I'll double check everything before the next flight for sure tho.
Lets hope so Gordon! The next fuz is going to have the camera incorporated into the design to cut as much drag as possible.
I stripped the Fuz last night, the tail, formers etc are all reusable so tome and materials saved for the next. I hope to start on it later today while the F1 is on.
Trying to reduce the drag on my one as its got a block camera out the top!
Should work quite well, wish i could afford smaller gear!
(http://s4.postimage.org/3244yqrdw/DSC00203.jpg) (http://postimage.org/image/3244yqrdw/)
(http://s4.postimage.org/3249xcsv8/DSC00204.jpg) (http://postimage.org/image/3249xcsv8/)
(http://s4.postimage.org/324d8fhus/DSC00205.jpg) (http://postimage.org/image/324d8fhus/)
(http://s4.postimage.org/324jukvtw/DSC00207.jpg) (http://postimage.org/image/324jukvtw/)
Nice job.
We're both on a streamlining mission, my new fuz has the motor internal with a spinner and will have the camera recessed and streamlined as much as possible... my aim is to make it look like a canopy.
I'm going to run my antenna flat to reduce drag further.
Oh and the new fuz should have space for 4s :D
Pics later.
Having had no input RE the above inrunner motor I'll give it a go next month and see what happens :D
Steve,
If you're on 35mhz and flying fast then that's your problem, you need to go to 2.4ghz.
Flying any faster than 80mph and the 35mhz signal can't keep up, 2.4ghz is good up to 190mph.
:whistle:
lol
That so obvious! We're lucky to have you around Paul :D
I'm starting on fuz mk2; same wings tonight. ;D
Got what i think is about 2700kv inrunner used on a bee2 leccy job, was pretty fast on that with a 8x8 so will see what a 6x5 goes like!
The mount should be quite easy. Pics to come.
Go Well Quite MKII... looking a bit more like it, a shame I couldnt get the nose totally smooth, that'll have to wait until MKIII :D, I've got enough space in this one for a 4s tho!
I'll try and get the FPV gear on later when the wife's gone to bed ;)
(http://s2.postimage.org/crjtblyc/SANY0284.jpg) (http://postimage.org/image/crjtblyc/)
(http://s2.postimage.org/crqfgzxg/SANY0285.jpg) (http://postimage.org/image/crqfgzxg/)
(http://s2.postimage.org/cs5bb4dg/SANY0286.jpg) (http://postimage.org/image/cs5bb4dg/)
Hey Gordon, dont suppose you've got plugs for servo linkage covers? LIke the ones you get with gliders?
looks good Steve, when is the race date.
regards
Quote from: Pasty on May 29, 2011, 09:24:51 PM
Hey Gordon, dont suppose you've got plugs for servo linkage covers? LIke the ones you get with gliders?
give me some measurements or a drawing and I may be able to vacuum form something
That would be awesome G!
As for a race date, I'm yet to try this planform properly via FPV, once I've got the swing of it we'll go for broke (not literally).
If Gary is up for it we could try some course racing too, might make for a fun vid if we have a recording cam on both planes.
A few people around the course with videos, will be good to edit into the final vid. looking forward to this one, mine red bull air race great stuff. :)
(http://s3.postimage.org/1xhc1u3d0/SANY0292.jpg) (http://postimage.org/image/1xhc1u3d0/)
FPV gear on
Had a quick fly with her built was tail heavy, more testing to come.
Finished my new fuse (same wings). Got to maiden it today with Pasty at the local park.
Inrunner motor this time (unknown kv!). Very quiet at full beans and the motor does not get hot on 6x5. So time to prop up!
(http://s4.postimage.org/1br2xptno/DSC00212.jpg) (http://postimage.org/image/1br2xptno/)
(http://s4.postimage.org/1brb7ek4k/DSC00215.jpg) (http://postimage.org/image/1brb7ek4k/)
(http://s4.postimage.org/1brms5zl0/DSC00218.jpg) (http://postimage.org/image/1brms5zl0/)
(http://s4.postimage.org/1brwpe2jo/DSC00223.jpg) (http://postimage.org/image/1brwpe2jo/)
(http://s4.postimage.org/1bsgju8h0/DSC00235.jpg) (http://postimage.org/image/1bsgju8h0/)
(http://s4.postimage.org/1bss4lnxg/DSC00237.jpg) (http://postimage.org/image/1bss4lnxg/)
Oh yeah forgot to mention, like steve i intent to 4S. Will make an order as soon as i get paid. Promising as nothing gets hot at all at the moment!
It looks the part Gary, should be interesting without knowing the kv :)
Yeah it will be interesting!! Not all that fun either tbh! :-\
I bought it for a little mugi asking the shop assistant for as higher kv as he would recommend. I remember it being over 2200 and under 3300. I could be totally wrong mind. Oh and the label came off after that mugi died.
So far the prop will spin up to full speed at 90% throttle. Does this mean its under propped? My head cant quite work it out. The fact its cold would suggest so. Also a 8-9 min flight only took 1120mah. :+
Looking good Gary. :)
regards
GWQ 2 is sorted, moved the corg forward a bit and shes on rails again. I'm getting some motor vibes unless its flat out so flat out she shall stay :D
The weeks looking ideal for FPV!
Great news the power is back on!! ;D
Bring on the speed! :D
Wow, what a lovely evening...
Me and Pasty got out to our local spot in that sun and warmth! FPV was on.
The inrunner is working fantastically. Runs luke warm ( no spinner yet to block the vents ) I'm taking the view that it can take a 7x6 prop that will start to get the motor warm so throttle mangement might be the name of th game!
Flies on rails. Much better than my maxi swift that is much larger. Very accurate on controls and easy to launch. Takes wind to! ^-^
I'd say these things are brilliant little fpv machines! Fast to boot! :+
ya, cracking little planes...
My ESC decided to go pop before I got FPV air time... grrrr.... still had craxking fun with my Scout tho... always take two planes!!
I wish i could afford two planes!! ;)
Well what a great sunny day!
Got out before the postman arrived so had no 7x6's but was a great day. Pitty the vid did not work :/
Then got back and tried my 7x'6. Little rocket! But on a vertical dive the wing mounts came out of the plane. I'll learn to use ply and not be so cheap! went strait in, killed a battery, esc seems okay. No fires thats the main thing! Fuse is totalled but the wings fluttered to the ground safe with the rtx. Lost the camera though, thats the most annoying thing, if it would have survived the crash...
Live and learn!
So, how fast has anyone gone then....
I've been through the posts on this 'speed challenge' and can't find any mention of what speed is currently the FPVUK leader.
Hmm, in that case I'm claiming my 91mph in my Roo on 3S, level flight cross wind
I know.... easily beaten but for the moment I am claiming podium cos no one else has stood up to be counted (thought Pasty or Angelos would have)
Oh, and apologies if I've missed the current max speed in the previous posts.
PK
Dammit!!! I've only got to 65, I'm sure my wing will go 80 as it is... in a vertical dive that is. I'm gonna get this motor: http://www.giantcod.co.uk/epower-hl2832-1600kv-class-brushless-helicopter-outrunner-p-405116.html (http://www.giantcod.co.uk/epower-hl2832-1600kv-class-brushless-helicopter-outrunner-p-405116.html)
Should be interesting on a 7x6 folder... I darn well hope I'll be able to crack 100 with my wing. I can build a model like yours Pasty and Gary in no time too, I even have all the stuff, but I have no second FPV system to go on it and don't want to rip it off of the wing...
Oh well, I'll just have to get more money then :).
He he !
I need to do something to get to the magic 100mph first....
No cheating with diving or downwind, all mine will be level flight after a turn in and cross wind so no wind help, trouble is I dont know enough about motors and props to sort out what would be an 'upgrade' on my Turnigy 2836 2350kv running on 3S (I think it will take 4S but I dont have any 4S lipos)
PK
yay! get involved paul!
You are the fpv speed record holder.... for now :D
Myself and gary have done 80-90 with our little speedys, but that was pre fpv gear, I'm yet to properly fpv mine and we havent had a speed reading (using doppler) for garys now deceased speedy (:().
My speedy is ready to go so I'll set a speed today just to get me on the board, I'm not expecting much, maybe 80.... we'll see :D
Go for it Steve, it will be great if you can nudge it up by a couple of mph more....
This could get quite addictive (and damaging on the pocket!) cos I'm not sure how well made my Roo is for these speeds, the last landing on Fri spun it round and gave it a bit of a graze on the underside from yet another hidden rock but it wasn't until I got it home that I noticed one of the elevon control horns had pulled right out of the foam leaving a perfect 10 x 10 square hole.
I've now epoxied in a bit of 1/8" balsa (on both horns) and reinforcing tape top and bottom but it does make you think what sort of buffeting forces are being experienced by the plane.
The Roo is quite a 'screamer' after just flying my EZ* and SW but really smooth to fly at around 30 to 40mph speed.
Can't wait to see videos, my flight from Fri was recorded on Ian's recorder cos I left mine at home, and Ian was good enough to edit the video so I could post the link.
What's the weather like down your way today ? dull overcast up here and just started to rain.
.
I'm sure your Roo should be good for 140 (probably more) without needing to strengthen anything, you simple need to strap on more watts :D
We've got rain due for the avo with it clear each side, I'm hoping to get out shortly before the rain arrives and wets the ground.
Will report back later :)
I think a magnet or something has let go, I got some grinding coming from the motor... that'll teach me from putting it in an oven (AKA a ventless nose).
Gives me a good excuse to buy another tho :D
I've just ordered a Turnigy 2836 - 3200 to try in the Roo (this motor is out of stock just now)
http://tinyurl.com/6jwqrze (http://tinyurl.com/6jwqrze)
should be interesting to see what difference if any it will make.
PK
I'm a bit stuck on what motor to try next :-\
I keep lurking in this thread - any recent vids?
I havent done a vid for a while, I got loads of footage but have been put off by all the anti FPV monkeys... The only way to get footage from the speed stuff is from the flight cam and I cant record from my vrx. :/
I managed to get one reading of 96mph. It took several passes to get even one reading as our planes are to quiet for the mic to pick up properly over the wind. No idea how accurate that speedorc thing is tbh!
I'm done with the speed machines for now, i need a different project... A general hack/utility plane is on the cards. Landing gear, pan and egg dropper maybe :D
that speed wasnt flown by FPV tho was it?
I'm on the Ute (TM) too (migth start it tonight), thinking of going twin motored for extra punch and drag :D
is this strait line speed or dose it could out of a dive ? i can get 100mph out of a dive ;D
i think we need video evidence of any clam
I've managed 105mph today with my Roo, video is taking ages to upload to Vimeo so it might be tomorrow before it gets posted up on the forum.
Made one of the lads at the field jump cos he had his back to it as I came screaming over the field.
It's difficult to be accurate with the speed cos I think we are all GPS based with the OSD's, I'm using EZOSD but in the same flying session it showed 0mph when I was doing a long vertical climb.
just started reading this thread. so whats the record
Ok, here's the video from today
Jamara Roo - 105mph (http://www.vimeo.com/24796515)
22 seconds in it hits 105mph
Go Paul!
I'm using doppler to check my speed as I dont have gps on my little speedy, the GPS will only give you ground speed when on the flat, the long you stay flat the more accurate it gets me thinks.
as new member to the forum well done paul
:)
Nice! But that was a definite dive in roo! ;)
Hi Gary,
you are right, I dropped about 100ft I think but wasn't letting the speed build up very much, it was when I levelled off that I opened the throttle wide open and accelerated at a rate of knots across the patch (that's John with the heli just spooling down)
I'll give it another go on Friday (weather permitting) and see if I can hold it flat and over the magic '100' for longer, I know what you mean though :)
I wasn't really getting into this speed thing but thought I would wind up some of the main players in the speed stakes by jumping in with at least something.... there wasn't even anyone claiming the speed record with an EZ* doing 30mph !
I'm well expecting to get blown away big time as there is some serious effort being put in by 'others' on here who are keeping very quiet at the moment.
I think we should have all sorts of posts on here just for fun, as long as people can see the situation prevailing, i.e diving, etc
.
Pasty, whats this Doppler Gun thing you have then (I want one)
It sound very high tec / expensive, or have you nicked it from the back of a police car !
Let me know where you got it from cos I can see everyone is going to be getting very 'picky' about these speeds... I somehow think that when Angelos kicks in with his overpowered bit of ceiling tile its going to be 'goodbye Vienna' for my 15 minutes of fame !
When are you getting airborne with yours to log a speed ?
.
Hi Snowy,
Welcome to the forum, enjoy your stay....
Oh, and thanks for being my spotter for the Tuesday flying session !
PK
When do i get to try fpv on one of your helis Paul :P
123mph
(http://s2.postimage.org/y5jgkylg/123mph.jpg) (http://postimage.org/image/y5jgkylg/)
may have a little tail wind :D
Quote from: pk-surfing on June 08, 2011, 03:49:42 PM
Pasty, whats this Doppler Gun thing you have then (I want one)
It sound very high tec / expensive, or have you nicked it from the back of a police car !
Let me know where you got it from cos I can see everyone is going to be getting very 'picky' about these speeds... I somehow think that when Angelos kicks in with his overpowered bit of ceiling tile its going to be 'goodbye Vienna' for my 15 minutes of fame !
When are you getting airborne with yours to log a speed ?
.
£2 :D
http://www.xioptics.com/james/rcspeedo/android_manual.php (http://www.xioptics.com/james/rcspeedo/android_manual.php)
Snowy,
FPV on a heli was what got me interested in FPV in the first place, then the lads on here said start with a plank so thats when the EZ* was put together, and I'm glad I didn't go heli straight away.
Knowing your advanced skill level with the helis it's going to be you trying it b4 me...... I'll have to think about fitting a camera and Vtx to either my Trex 450 Sport or on the Raptor 50, I think the 450 leccy will be a bit easier on the vibration front.
Definitely this summer though.
Hi Ben,
Thats what I like to see, we need more pics or bits of video showing speed...... I'm not bothered if it in a dive or whatever just interested how fast we are flying without bits falling off.
The serious speed challenge thing does have to have a bit of fair play with it and needs to be level flight and cross wind, mine was after a short shallow dive (about 100ft) and had maybe 5mph help with the wind, whilst I think it will do 100 level I dont think much more with the motor in it.
I have ordered an upgraded motor, I think its called a Wren MW54 so just need to sort out how to mount it.
.
i had a 50mph tailwind :D
Quote from: pk-surfing on June 08, 2011, 03:49:42 PM
Pasty, whats this Doppler Gun thing you have then (I want one)
It sound very high tec / expensive, or have you nicked it from the back of a police car !
Let me know where you got it from cos I can see everyone is going to be getting very 'picky' about these speeds... I somehow think that when Angelos kicks in with his overpowered bit of ceiling tile its going to be 'goodbye Vienna' for my 15 minutes of fame !
When are you getting airborne with yours to log a speed ?
.
check the link Gary posted above for the doppler, its software for your mobile phone or pc.
The motor let go on my little speedy before I got to FPV it, I've sorted the motor (stuck mgnets back in) and mounted it externally again to sort the cooling, I'll get a speed reading over the next few days.
This speed things just a bit of fun for me, I'm not going to get serious about providing proof etc
There are also two programs for iPhone & iPod Touch called Doppler Speed and Sound Speed Gun. I have not used either of them and I don't know how well they work.
-Angelos
Shame i dont have OSD fitted to Funjet. :(
Funjet 1000m dive (http://www.youtube.com/watch?v=OZ9a769WFEQ#ws)
140mph Fastest Funjet 808HD Camera (http://www.youtube.com/watch?v=jO2OY009vqI#ws)
Not FPV but...damn!
200mph RC plane spins prop at over 30,000 RPMs (http://www.youtube.com/watch?v=oF8lUPNnwng&feature=feedu#ws)
That is quick
I'm not sure that I would like to put my face over a prop doing 30000 rpm - watch about 2.00 mins into the video when he starts it on the runway
:o If your flying my direction please tell me when, then i can move the car, :laugh: and close the shutters on the windows :laugh: and get the camera ready for a high speed fly past :P
best of luck with that one Pasty
Dizzy
I dynamic soar, I wouldnt like to FPV round a fast or slow DS circuit!
Dont worry Dizzy, I've got acre upon acre of test area thats all nice and safe.
Once I get some decent FPV weather I'll set the GWQ speed record.
I suspect there may have been a slight chattering of the knee,s and a dry mouth, during that flight
sounds like you got a nice spot Pasty
I just took my helmet off :-[
I think i know where you may be flying, but your base station antenna must be the biggest in britain lol :P
hopefully we may meet up sometime :)
Dizzy
I do fly up there sometimes... I'm in with most of the land owners round my way so can pretty much fly anywhere.
127mph with the Roo after work today on my one and only 4S lipo.....
Now the motor is rough as anything but it was worth it !
Roo 127mph (http://vimeo.com/25370678)
.
get in mate, LOL nice run there, Also climb rate was fantastic
It wasn't half screaming, really screaming
The motor is certainly worse for wear though so I'm on the lookout for another when HK get them in
Turnigy 2836 2350kv
Yes ive seen the vid with that motor seems to go really well with it, Im using the keda 2213 2200kv motor from giantcod, not turbo speed but goes vertical easy enough
Great video Paul.
Things have not been going smoothly with my on steroids 6S FunJet. Where to start!
* The motor packed up - shaft spinning loose on the rotor whist bench testing. Motor housing is press fit and can't be opened.
* The ESC has some fault and produces random kicks.
* A made a VTX using of the shelve modules but I am getting around 60% of the target power on the SWR meter. Grrr!
* One of my VTX antennas was found to be faulty. SWR jumps up when I wiggle the antenna indicating internally broken cable.
The only good thing so far is that my own OSD PCB is working with some minor fixes that are expected on prototypes.
Luckily it is still Monday and hopefully the new bits will be delivered before Saturday and FPV Bounce. Pasty are coming to race? ;) I don't believe I have seen any PM from you.
Cheers,
Angelos
Angelos,
Believe me I would really love to see your funjet flying especially the launch with a 6S lipo in it, and also see the look on Ian's face if I said 'right, get your gear together we are going to the FPV Bounce'.
The distance and travelling is no problem and we would get all the stuff we need in my car, also it would be great to meet all the lads.
Unfortunately this weekend is:
a) my birthday, my family have made arrangements for a meal out
b) we have relatives from Australia arriving for a 3 week visit (1 week they are going over to France)
So unfortunately I am going to miss meeting up this time round (I know where I would prefer being !) but will be thinking of you all down there when me and Ian are out flying over the weekend (weather permitting).
Have a great time, and I hope it all comes together for the Fujet flight.
PK
Cool Paul but that was a good 200m dive! :P If we're counting dives my 168mph would be tops to date. :P
I'm not out of the speed race but I am retiring for the short term, I'm working on my Ute at the mo which needs the video gear from my speedy... oh to have oodles of cash.... I'll see what speeds I can get from anything I'm flying and keep ya posted. I do like a bit of maxage speedage :D
No bounce for me I'm afraid, if it was this time next month I would have been on it as I'm on hols up north... a shame but there will be another I hope.
Great Video mate 150 here we come. :)
Steve,
168mph...... video please !
;D
I cant record my flight feed, Gary will vouch for it tho as I was very much surprised to see it on the max figures at the end of the flight and had to show him.
No video, didnt happen :)
So will Ian's 191mph with the SW from last weekend count, video recorder went faulty though ;)
Afraid not, god damb emprex :( lol
aaaahhh the good old trust in your comrades... FOR THE MOTHERLAND!! :P
I dont know how accurate that was as it was a GPS reading, I'll replicate it just to shut you two up :D
I'll wack a higher pitch prop on for more oomph too.
Going for 168mph again.... if you end up covering the field in bits of white foam dont blame me.
Anyway you've no chance, I've just ordered a higher powered motor for mine, should be here for the weekend
http://www.gliders.uk.com/prodinfo.asp?number=G6815 (http://www.gliders.uk.com/prodinfo.asp?number=G6815)
.
Quote from: Pasty on June 21, 2011, 11:15:29 AM
I cant record my flight feed, Gary will vouch for it tho as I was very much surprised to see it on the max figures at the end of the flight and had to show him.
Its one thing to vouch, yes i saw the figures. But its another thing to believe the figures! :laugh:
Anyways GPS is rubbish at vertical speed is it not?
Good point Gary, Pasty must have been rocketing down in that dive if it was showing 168mph (GPS ground speed ?), or was that what it registered after pulling out and flying flat ?
It can only register when flying horizontal, in a true vertical dive it'll read zero.
So Gary confirms the GPS reading :P (whether he trusts the equipment is irrelevant).... but it cant be counted as this is about on the flat speed, which also makes your latest speed disqualified Paul.
Unless we say screw it and go for whatever we can by whatever means :D
Rocket power anyone?! now thats got me thinking :D
It's all for fun, I'd just like to see more bits of vid posted on here with speeds problem is with GPS based speed (which is all we have with just about any OSD.. I think Eagletree do a pitot tube system) the really fun speeds in a power dive won't give anything of interest.
Thing is we all know that when/if Angelos gets his 6S Funjet launched it's going to be all over whether its flat flight or in a dive !
I have a friend who has a Trex 600 and uses 6S lipos and I must admit the batteries are HUGE
Angelos are you winding us up about this or do you honestly think you are going to be able to launch it....
it'll launch easy with that power :D
ha Steve, check this out he has your red tape. :D
Flite Test - 100mph under $100 - CHALLENGE (http://www.youtube.com/watch?v=PwODNPFs93A&feature=BFa&list=UL23XIBxwtIYY&index=3#ws)
Here is the final layout of my FunJet....
At the nose 1000mAh/2S pack for the OSD, VTX and camera. Followed by 2x 2200mAh/3S for the motor... followed by a very small compartment for the avionics. I am still not sure where to fit the chunky DragonLink RX. I am thinking to removed the connectors and just solder directly wires for the the PPM and RSSI. The GPS module and OSD are attached on the avionics cover whist the ESC and current sensor are attached to the base of the fuselage.
With this layout the plane balances perfectly. All up weight 1.245Kg. An aerodynamically hidden hook is available in case it needs bungee launch.
(http://www.spartan-rc.com/pub/posts/fpvuk/funjet01.jpg)
-Angelos
Certainly using every bit of space in there, I'm looking forward to seeing what it can do as I reckon you wont need to go much past tickover to log some serious speeds with it.
We should have a sweepstake going pre your speed runs to see who can guess nearest, I reckon 168mph level and 197mph with a dive !
PK
Finally he shows us the goods! ;)
yeah you certainly filled every bit of space!
What C rating are those packs? nano tech 70c jobbies?
I like the idea of using the 3s in series to deal with space issues, lots of power in a slender form, you got me thinking now :D
Steve,
go on have a guess at speeds for level and max after a dive.
I recon 115MPH level. :+
regards G
ok, I cant remember the motor used but I'll go for 155 on the flat and 190 in a full power dive.
Angelos.....
You need to chip in with your anticipated speed guess, no pressure though ;D
Hi guys
was talking too Angelos last night apparently her maiden is today WISH I WHERE THERE :D
2720Kv * 3.7V * 6S = 60384 RPM
60384 * 4.7" * 0.0254 * 60 = 432.5Km/h (speed based on prop step of 4.7")
432.5Km/h / 1.609344 = 268.7 mph
Of course air causes drag so 268.7 mph will not be achieved but I will be very pleased with anything over 180mph level flight.
As of speed after a dive I think you should rephrase the question to "What will be the size of the bigger piece?" because I don't think the servos will be able to pull it out!
-Angelos
180mph level.... hmmm I suppose it does look very slippery.
What have you done to the wings, are they sanded smooth and painted ?
I'm getting butterflies already
This should be good ! Or very short lol
Lets hope its not too short. Are you going to get any speed readings from today Angelos ?
Quote from: Angelos on June 24, 2011, 10:26:37 AM
2720Kv * 3.7V * 6S = 60384 RPM
60384 * 4.7" * 0.0254 * 60 = 432.5Km/h (speed based on prop step of 4.7")
432.5Km/h / 1.609344 = 268.7 mph
Of course air causes drag so 268.7 mph will not be achieved but I will be very pleased with anything over 180mph level flight.
As of speed after a dive I think you should rephrase the question to "What will be the size of the bigger piece?" because I don't think the servos will be able to pull it out!
-Angelos
ahh I based my calcs on 1700Kv spinning a 4x4
I dont think the servos would be the issue with a full power dive but elevon flutter or elevon flattening out will be. :D
We NEED vid of this one!
A rather disappointing 120mph with the FunJet. :( Still have two major issues:
1. There is a timing issue with the ESC/motor which makes the motor kick at low RPM and particularly when the pack is charged. The kick is not present at high RPM but the bad timing may result to reduced power.
2. The prop is very small 4.75x4.75 and most of it is behind the plastic shroud funjets have around the motor. This may affect the effectiveness of the prop due to restricted airflow.
-Angelos
Hi Angelos
do I get a prize for being the closest, smarty pants :laugh:
G
Ha! even with all that grunt you only got a few more mph than us!
For flat running thats still the record mind...but...
The game is still very much on!!
Paul, your sky fun could well be good for another 25mph! get on it!!
I'm eyeing up new airframes for this challenge ;)
Actually, the guys watching my video feed said it was 215kph which I estimated to be 120mph. But after doing the conversion properly it comes to 133mph. A respectable speed but still disappointing given my expectations. Some improvements are needed.
-Angelos
I think my best flat speed was about 107mph, which I repeated at the weekend flying with Ian.
Levelling off after a dive still only got it to 125mph so I think Angelos at 133mph flat is a huge difference for me to make up !
I think I will get another Roo kit and do something with the wings to get them super smooth for starters so they are really 'slippy', but an extra 30mph is a lot to catch up.
Well done Angelos, it may be down to Steve to chase you now.........
PK
lets see some videos of this.
G
come on, an extra 30mph is easy meat if you get a hotter motor and packs... I say that with no real knowledge of stuff like this :D
and grats to Ang for his new FPVuk speed record... we do need a vid tho ;)
Congrats Angelos, although a lot down on predicted speed its still the highest yet. Looking at all the weight and effort to squeeze that much more out im wondering what the next logical step would be to beat it.
Unfortunately the first recording was over-written as I had many flights at FPV Bounce that filled the card. The first flight was not FPV anyway as I was still getting a feel for the model.
In the second flight (that was meant to be FPV) I got adventurous and decided to launch without the bungee. Unfortunately there was marginally not enough lift and one of the ailerons cracked as the control arm hit the ground. I am repairing it now and will attempt FPV flight this evening if all goes well.
-Angelos
Good Luke mate.
G
Ahhhhh,
So this is the same as Ian's 191mph SW flight...... no video
That is such bad luck Angelos, really bad luck, really really bad luck
Sorry about that ;D
(PK grabs the crown back off Angelos !)
.
PK... look after that crown for me and stroke it whist you still can today. I will be taking that back around 6pm this evening and only bad luck can stop me. ;)
-Angelos
so that speed wasnt FPV either?!
Hold onto that crown Paul!!
Quote from: pk-surfing on June 27, 2011, 01:04:43 PM
Ahhhhh,
So this is the same as Ian's 191mph SW flight...... no video
I know i could have had it myself, nevermind :)
FunJet 6S FPV (216KPH / 134MPH) (http://www.youtube.com/watch?v=FxLCA5AVozA#)
-Angelos
Well, we seem to have a new reigning champion :)
Well done Angelos, that was and awesome run, twitchy doesnt come close to an apt description, love the rolls :)
it did look like you were diving for that speed but we'll give it to ya :D
I gotta get a flight recorder sorted so I can show my OSD speeds.
Balls of steel, Was the close pass to the power lines skill or luck :D, Pressures on Mr Pasty!.
I'm seriously considering trying rocket power... Easy to build, no launch issues, cheap and it'll give crazy speeds.
and I'll hold the record for ever as no one else would be equally as stupid to try it :D
http://www.rocketstore.co.uk/shop/product.asp?numRecordPosition=31&P_ID=1382&strPageHistory=cat&strKeywords=&SearchFor=&PT_ID=89 (http://www.rocketstore.co.uk/shop/product.asp?numRecordPosition=31&P_ID=1382&strPageHistory=cat&strKeywords=&SearchFor=&PT_ID=89)
That'll haul a 300g airframe vertical at rocket type speeds!
mooooowwwahahhahahahaaaarrr
If you were going down that root I recommend having a folding prop to get you going, and rocket to fire when you are in the correct flight path and up to a decent starting speed, I tried it years back with just rockets, it was uncontrolled acceleration, I was lucky I didn't set the filed alight. lol
regards G
Quote from: Pasty on June 28, 2011, 12:43:09 PM
I'm seriously considering trying rocket power... Easy to build, no launch issues, cheap and it'll give crazy speeds.
and I'll hold the record for ever as no one else would be equally as stupid to try it :D
Don't be so sure Pasty. I am crazy enough to try it plus I have the technology to keep it flying straight!
BTW, the FunJet only drops 10m or so in a distance of over 700m - almost insignificant. The ground is pitching up from 0:20 onwards and I also like to have the horizon 3/4 up in the video frame which is probably why it looks like it is diving. The pass under the HV power lines at 0:20 sets a good start altitude reference.
-Angelos
I got the tech too! its called my thumbs!!
Ahhh that explains it, I fly with the horizon centred, I'll let you off :)
Cool idea about the folding prop Gordon.
I don't care if it's a good idea or not - rocket assisted flight will be an AWESOME project :D
Build it! BUILD IT! ;D
Good news Pasty, the FunJet R.I.P. so no more speed runs from me for a while. This was it's forth flight. The XT60 battery connector melted cutting power to motor and all avionics. Reviewing the recording I see the video disappeared (static) then it comes back for less than one second showing the DOSD booting (now the plane is inverted less than 10m from the ground) and video disappears again.
So damage:
The nose of the FunJet is missing.
A 3300mAh 4S LiPo is dead. (Changed to 4S today. Still did over 180kph)
The VTX is broken. My own design which I should be able to repair.
Large hole to the ground. Repaired with soil.
Now I am thinking... the wings and middle part of the fuselage are in perfect condition. Maybe I should strap a rocket down the middle! :D
-Angelos
I feel for you mate, after seeing all the hard work you did on it, I am genuinely gutted for you, oh well back to the drawing board no doubt :D
:o sorry to hear that Angelos, but I like the positive attitude you have with re thinking the wreckage, onwards and upwards, that's the way.
regards G
Awwww thats a shame Ange, she got you the FPVuk speed record tho.... for now :)
Join me in my rocket powered one way ticket adventure.... we'll be legends! :D
I gotta find some super cheap FPV gear for this one, theres a very good chance of total destruction..... exciting isnt it! :D
I'm thinking about this kind of shape...
(http://www.strategic-air-command.com/aircraft/fighter/images/f106_delta_dart.jpg)
I'm also thinking about 2 motors, one will be fired from the ground by launch control :D and the other will be fired from onboard equipment via the TX and can be fired up whenever you need it (once lit you're on for the total burn mind :D).
The more I think about this the more excited I get.
Sorry about the loss mate, May she rest in pieces. Mr Pasty you are just mad enough to get this to work LOL, Following this closely
Same!
I can hear the mad cackling from his workshop already ;D
YouTube - Broadcast Yourself. (http://www.youtube.com/watch?v=nkbJVvW7A9Q#)
(http://www.spartan-rc.com/pub/posts/fpvuk/funjet02.jpg)
-Angelos
PHFF.
Bit of T-Cut, that'll buff right out! ;D
Seriously though, you could probably get rid of 90% of that damage by putting it in boiling water and reshaping the foam then gluing?
BTW it says your video is private :(
vids private Ange... what a great bit of damage, looks like someones given the nose a good wack with a lump hammer, the rest of the plane is untouched!
Going to do a bit more reseach later on the rocket motors and order some, once I've got them I've got no excuse not to do it :D
I think I've found a home for my cheapo 380tvl cmos cam :D
Hi Steve,
video fixed. iMovie uploads them to YouTube as Private by default.
I was thinking to maybe make a new fibreglass nose which will allow me to get the camera inside right at the nose.
-Angelos
Quote from: Angelos on June 29, 2011, 11:01:54 AMI was thinking to maybe make a new fibreglass nose which will allow me to get the camera inside right at the nose.
Or... put a piece of ply at the front and mount the motor there, then add rocket motors at the back for the extra boost ;)
-Angelos
Now your talking ! :)
Wow - you didn't get much warning when the video went off? Did a cable come detached or something, as it seemed pretty rock solid until it went - although it came back, hmm...
Bad XT60 connector. One of the pins is smaller diameter either somehow crashed or badly manufactured. Either way the bad contact melted the connector and lost power to motor and all avionics.
-Angelos
Quote from: Angelos on June 29, 2011, 11:34:29 AM
Bad XT60 connector. One of the pins is smaller diameter either somehow crashed or badly manufactured. Either way the bad contact melted the connector and lost power to motor and all avionics.
-Angelos
Ouch...