The Venturi Evo is coming up to a year old now, and when the Falcon Evo was released earlier this year there were some improvements in the centre section which the Venturi could benefit from, it's time for the Venturi FPV Evo mk II:
(http://www.peely.com/wp-content/uploads/2015/11/IMG_1400-e1446479592814.jpg)
The changes are as follows:
Curved front section: Giving better aerodynamics and block foam for easier and more versatile FPV cam / HD Cam mounting options.
Dual spar: One at the rear in the usual place and a half length spar at the front to aide assembly in getting the wings to level during glueing.
Higher battery bay: Accommodates the new array of Multistar type batteries' alternate form factor.
Newer swept elevons: We all cut them this way anyway but they come like it now.
Single height battery bay and equipment bay: Makes assembly and cable routing easier.
Correx skid plate: Handles landing on rough terrain better.
More to come on this in due course, as you can see she's built already but not maidened and I do have a lot of build photos to cover the finer details, but wanted to get her fully built for the first post. I'm not expecting anything too different for the maiden, all the electronics are from my old Venturi with the exception of the board cam (which was toast) and a new Scorpion motor (more power).
Hopefully I should be able to maiden on the next calm day, maybe Thursday or Friday.
Cheers,
Neil.
Here's a side profile, showing the new centre section profile:
(http://www.peely.com/wp-content/uploads/2015/11/IMG_1402-e1446480722912.jpg)
And in terms of Multistar battery options you have 2x 4S 4000:
(http://www.peely.com/wp-content/uploads/2015/11/IMG_1386.jpg)
Or 3x 4S 4000:
(http://www.peely.com/wp-content/uploads/2015/11/IMG_1387.jpg)
Or 2x 4S 5200:
(http://www.peely.com/wp-content/uploads/2015/11/IMG_1388.jpg)
Or if you live in cloud cuckoo land, 4x 4S 5200!:
(http://www.peely.com/wp-content/uploads/2015/11/IMG_1389.jpg)
Balance-wise I need to get the maiden out of the way but think that 2X 5200 4S is a realistic option.
Looking good. Let the crash testing commence!
Quote from: Brucey on November 02, 2015, 05:20:49 PM
Looking good. Let the crash testing commence!
yeah, defo' Brucey. I've got a spare one here if I write off this one!
NO WAY! :o ......
I haven't even got my Mk1 finished yet ....
Looks good :)
4x 5200 is mental, would it even practically balance with that much nose weight ?
Quote from: iPeel on November 02, 2015, 05:23:27 PM
yeah, defo' Brucey. I've got a spare one here if I write off this one!
Hands off!
Quote from: Coyote on November 02, 2015, 05:52:40 PM
4x 5200 is mental, would it even practically balance with that much nose weight ?
Not a chance! I took those photos during the build to see the capacity of the battery bay without knowing what the CG would come up like. Now she's built though 2x 4S 4000's all the way up front just about balances with the motor I'm running and 2x 4S 5200 all the way back in the bay seems to balance.
She should be quite sleek in the air, so it'll be interesting to see how much more efficient this is compared to the original. I've also fully inboarded the servos on this one, only the control rod slips out of the wing to the elevon control horn. I'm hoping to get a fast ride out to 20k and back with ease.
Funny as I was only thinking of adding another wing to my hanger after bending my Zephyr last year.. This looks nice and with 10amp plus on board should give great range..
I'm eagerly awaiting the maiden and flight report :D
Quote from: MarkLloyd on November 02, 2015, 05:31:42 PM
NO WAY! :o ......
I haven't even got my Mk1 finished yet ....
What he said...
Same here:(
What have you all been doing??? I picked this up on Friday and finished it today!
Really you could get 80% of what's changed by rounding off the front of your centre section, removing the front panel and using a block of foam to contain the board cam and GoPro.
Well I made a start
Just stuff keeps getting in the way:-[
Looks great.
Very commendable that after just one year you're improving and innovating instead of just sitting on your laurels :)
Well I'd been working on a curvy front for my mk1...
Needs a smiley face😊
I like that idea....... :D
New Venturi EVO V2 Looks great.. like a bigger Falcon. Twin spars on the falcon might be good for alignment too. I think I built my wings a bit warped!
regards
Andy
Well, the maiden didn't happen today and probably won't tomorrow as the weathers absolutely shite. So instead I've decided to rip the nose off and make major changes - before she's even flown!
The reason is I'd like to produce a modular system for the front camera section to allow a variety of board cams and HD cams to be combined and 3D printed to suit any needs. I ripped my foam block off:
(http://www.peely.com/wp-content/uploads/2015/11/IMG_1408.jpg)
... and measured up all the bits. As the bay is 120mm wide I've taken 0.5mm off that for allowing an easy fit accounting for minor build differences and allocated 49.5mm for the board cams and 70mm for the HD cams.
First off I made up a part for my PZ0420m and a part for a Mobius then welded them together:
(http://www.peely.com/wp-content/uploads/2015/11/Board-Cam-Mobius.png)
It's printing for a test fit at the moment:
(http://www.peely.com/wp-content/uploads/2015/11/IMG_1410.jpg)
As you can see all that air in the part will make it not all that much heavier.
In the meantime I've also received the new graphics from Rob and vinyl cut them, looks really nice:
(http://www.peely.com/wp-content/uploads/2015/11/IMG_1406.jpg) | (http://www.peely.com/wp-content/uploads/2015/11/IMG_1405.jpg) |
Looking good
wait what printer is that ? i recognize its internals? abs jobby with an air filter ??
Quote from: Doctor3 on November 09, 2015, 04:00:59 PM
wait what printer is that ? i recognize its internals? abs jobby with an air filter ??
'tis an Up Box, awesome bit of kit!
Ah I thought so, my uni has 6 of them, new this term. My printer has taken a bit of a dive :(
Quote from: Doctor3 on November 09, 2015, 04:13:35 PM
Ah I thought so, my uni has 6 of them, new this term. My printer has taken a bit of a dive :(
Yeah, my old one was a bit tired and I needed something that printed ABS with zero fuss and a more streamlined workflow. The quality I get from the Box is amazing and support material is dead easy to remove.
Worth checking the plate at the back of the extruder is a "new style" part with little lugs that support the ribbon cable. I got through three cables before we found out the older part creases the cable and shorts two pins together. Updated parts are available on the Up! website, TBH I didn't expect a premium printer to need 3D printed parts but once that was sorted the quality is so good I'd forgive them.
The new nose section is printed and in place now:
(http://www.peely.com/wp-content/uploads/2015/11/IMG_1416-e1447084153354.jpg)
I should also have Brucey dropping round his GP3 in the next few days for a measuring up, so will add that to the collection of assets along with the Xaiomi Yi.
Anyone spot the new logo ?
All will be revealed with the new website coming on stream very soon
Cheers Rob
Nice pod matey, looks very streamlined :)
Just got mine glued together. Final bit of wiring and elevons left to do.
(http://img.photobucket.com/albums/v432/BrunoV/20151121_231946.jpg) (http://smg.photobucket.com/user/BrunoV/media/20151121_231946.jpg.html)
(http://img.photobucket.com/albums/v432/BrunoV/20151121_232022.jpg) (http://smg.photobucket.com/user/BrunoV/media/20151121_232022.jpg.html)
Awesome mate, looking good. Any thoughts on the colour scheme, Martini racing again?
I need to get on with measuring up your GP3, I'm still working on the nose cone too. Will get them both sorted today.
Thanks bud. It's so nice to build. Really stiff with the extra spar.
Yeah sticking with the stripes, but they won't get attached until she's earned them after the maiden!
Any updates?
What is actually included with the kit, I mean, will the camera modular section be included as well?!
The weather's been so crap there's been no chance. Rob's even managed to build one in the time I've been waiting for some decent weather, and he's the world's slowest builder.
The kit comes with a block of foam cut to profile which you can then fit the cameras into and Rob's done a really good job with his. I will upload the modular files to Thingiverse so people can print if they want. I haven't managed to get hold of a lot of samples though, so only have Mobius, GP3 and the PZ0420m.
This is annoying me now. I stuck some FPV gear on my Radian which is fun for floating around but no good in anything other than flat calm conditions.
I might have to order another one soon, this time will be EzUHF for control and 1.3 video. Removable wings too I think. I may as well fit my EzOSD too. On a side note, I made use of the HK sales so got some EzUHF gear. I've tested it on the Radian and it seems very good - at 26 quid for a JR tx module and a receiver I couldn't say no. Was cheaper to get that than a decent openlrs system and will do the job for me fine. I've just got to sort out a ppm-pwm decoder circuit then I can have 10 usable channels. The only slight issue I've found with it thus far is that the latency is noticeably higher than say a Frsky X series system, but still perfectly usable.
As for the power stuff, a new toy means I have 6s 5000mAh packs available. I wouldn't mind getting a decent motor and running it on 6s - only issue is that the packs may not fit. Dimensions are 150 x 50 x 52mm. Or should I just do it properly and get some 4s 4000s or whatever it needs?
I'll definitely get another one either way, the kit is only 70 quid and it does fly really well.
The bay will take that Sheldon, I have just measured it, but there's no way I can couch for the CG balancing up.
Quote from: Sheldon Holy on December 06, 2015, 08:21:14 PM
This is annoying me now. I stuck some FPV gear on my Radian which is fun for floating around but no good in anything other than flat calm conditions.
I might have to order another one soon, this time will be EzUHF for control and 1.3 video. Removable wings too I think. I may as well fit my EzOSD too. On a side note, I made use of the HK sales so got some EzUHF gear. I've tested it on the Radian and it seems very good - at 26 quid for a JR tx module and a receiver I couldn't say no. Was cheaper to get that than a decent openlrs system and will do the job for me fine. I've just got to sort out a ppm-pwm decoder circuit then I can have 10 usable channels. The only slight issue I've found with it thus far is that the latency is noticeably higher than say a Frsky X series system, but still perfectly usable.
As for the power stuff, a new toy means I have 6s 5000mAh packs available. I wouldn't mind getting a decent motor and running it on 6s - only issue is that the packs may not fit. Dimensions are 150 x 50 x 52mm. Or should I just do it properly and get some 4s 4000s or whatever it needs?
I'll definitely get another one either way, the kit is only 70 quid and it does fly really well.
No problem, I'll use a bigger motor :)
But OK, I'll get proper lipos then. What would you recommend as the most efficient motor choice? I'm not hugely worried about speed but it would be nice. I could use the Emax motor I had on the last one but it might be a bit lethargic with the larger packs. Speaking of the lipos, would you suggest the 3300s as before or move up to 4000?
Thanks!
Finished!
(http://img.photobucket.com/albums/v432/BrunoV/IMG-20151208-WA0001.jpeg) (http://smg.photobucket.com/user/BrunoV/media/IMG-20151208-WA0001.jpeg.html)
She'll get her stripes once the maiden is done! Now time to guess the trim!
That looks nice. Are you using the O.S. motor that comes in the 4s power pack?
Looking tidy mate, is the Ruby behaving itself?
Thanks. It's the Ritewing motor that comes in their 4s pack. Think its very similar to the OS motor. It's what I've used on my last two venturi's
Thanks bud. Yeah seems to be behaving ok. Might have to do that mag calibration again that we did on top of that hill.
Quote from: Brucey on December 08, 2015, 11:39:54 PM
Thanks bud. Yeah seems to be behaving ok. Might have to do that mag calibration again that we did on top of that hill.
You mean the thing where I have to hold the wing dead still sideways on in 30mph winds at the top of a hill while you try to read a load of gobbeldygook off a bit of folded up paper while scratching your head and randomly flicking switches on your transmitter?
Yeah that's the one! Apparently it worked a treat last time.
Finally! Like bloody buses, you wait a month for a Venturi FPV Evo 2 maiden and three come all at the same time!
Brucey, Rob and I braved it in the fog at a new flying site yesterday and got all three flown, Bruno was up first, then me, then Rob.
As Bruno only had his DVR running (so it actually happened) I'm not sure if we'll see his footage, Rob only LOSed his so technically it didn't happen.
Here's mine though:
Overall I'm pretty happy with the performance, although I've reluctantly admitted that running a 9x9 prop is overdoing it a bit, I'm now relegated to a 9x7.5. :(
Can't wait for the weather to pick up so we can get some great air to air going on.
Neil.
Yeah I'll post mine up.
Can't see your vid using tapa talk, it's this to do with the new way of doing vid in a post?
Quote from: Brucey on January 07, 2016, 07:48:36 PM
Yeah I'll post mine up.
Can't see your vid using tapa talk, it's this to do with the new way of doing vid in a post?
No, it's 'cos I blocked you on YouTube!
Yeah, probably is something to do with the new YT vid format.
Nice - I'd completely missed this thread and so the mk 2 came as a complete surprised. Looks great though - lots of space.
I'm even more impressed that you at least edited to the video to such a point that there's even an intro :o
It's good to have a Venturi back on the wall.
(http://img.photobucket.com/albums/v432/BrunoV/20160108_225717.jpg) (http://smg.photobucket.com/user/BrunoV/media/20160108_225717.jpg.html)
Ah, she's got her stripes from the other day.
Reminds me I need to come up with a V2 of the wing mounting system.
Yep, stripes are on, she earned it after a maiden like this
http://youtu.be/VeAtqbclXVs
i'd like one of those....... Deffo on the wish list..
Nice maiden. Cant wait for my kit and bits to arrive :)
And it has begun :-)
Did a lot today,
Fitted the servos, receiver / transmitter, laminated and then covered one of the wings in this rather striking pattern.
Have a friend who works in a sign shop who printed this for me. At the time it was a but of a laugh which I thought I would regret. Now I love it ;)
I`m going to be running a 1250kv motor on 4s, I`m looking for flight time and stability. Is 8x6 a good place to start?
Quote from: Huxley on January 31, 2016, 12:12:31 AM
At the time it was a but of a laugh which I thought I would regret. Now I love it ;)
Looks pretty cool to me :) Takes me ages to find things and something like this would certainly help, Given me an idea on one of my future builds :D
Your certainly not going to loose that!
oops.... 1 just fell into my shopping basket :laugh:
Quote from: Gundummy on January 31, 2016, 10:16:25 AM
oops.... 1 just fell into my shopping basket :laugh:
Ditto lol, i just binned my other wing!
still toying with idea's - rather than intrude on clipped wings blog i'll put some ideas down here before i build mine. I'm torn between single tilt which seems simple enough or making the whole front end tilt..... Looking down for me makes the experience just that little more immersive.
(http://i21.photobucket.com/albums/b287/ukbeast/evo2single_zpsoyfnc5tz.jpg)
(http://i21.photobucket.com/albums/b287/ukbeast/evo2double_zpsxlcuszet.jpg)
(http://i21.photobucket.com/albums/b287/ukbeast/evo2dbl_zpsg36z6sek.jpg)
Nice drawings - Rhino software ??
yep GT40... well spotted :D
Rhino is what I use.
Trouble is I don't use it much, so keep forgetting how to use it properly - especially going from 2D to 3D !
But, when I do remember, I do enjoy using 3D to physically check the 'fit' of the components of a designed assembly.
QuoteRhino is what I use.
Trouble is I don't use it much, so keep forgetting how to use it properly - especially going from 2D to 3D !
But, when I do remember, I do enjoy using 3D to physically check the 'fit' of the components of a designed assembly.
I taught myself by making loads of generic rc parts... but yes, if you don't keep on top of it you soon suffer the skill fade. It has to be the easiest software to use for 3d applications IMO... and simple to export to CNC
Ok, Just an update on what i settled on. I bought some ply sheet, set about some plans - Rob from FlyingWings was kind enough to send me his CAD files to tinker with. As it turns out the ply sheet i bought was to small to cut new modified side plates which kind of forced my hand to do something else with the existing design. Secondly, Rob intially sent me the centre sections of foam an inch to wide for the frame but soon sent the right size promptly after. (This has given me the idea to widen the center section ply to accomodate the wider foam - but more on that another day!)
Pictures paint a ......
(http://i21.photobucket.com/albums/b287/ukbeast/Mobile%20Uploads/20160219_141950_zpsmimvpiqk.jpg)
(http://i21.photobucket.com/albums/b287/ukbeast/Mobile%20Uploads/20160219_141958_zpshytrbcgg.jpg)
(http://i21.photobucket.com/albums/b287/ukbeast/Mobile%20Uploads/20160219_145422_zpsmvb4zqwy.jpg)
(http://i21.photobucket.com/albums/b287/ukbeast/Mobile%20Uploads/20160219_150639_zpsdk7adqht.jpg)
(http://i21.photobucket.com/albums/b287/ukbeast/Mobile%20Uploads/20160219_151537_zpshsttvl1m.jpg)
So that is finalised.. just need to mount the main cam and servo inside the ball and use a slipring to power the insides. This will enable the cam to look straight down. I've also had some tiny button hole cams turn up from a bongood sale ages ago. Inspired by IPeels idea I might stick those in the wings facing out for circling or rear facing......
Really nice work, where did you get the camera bubble from ? looks like a bit from a tie fighter ?
Rob
Cheers Rob... I had a really old IP Cam which was utterly useless... I wanted something to survive a belly land so a simple servo/tilt and a boardcam wouldn't do, oh and not upset the flight characteristics.
(http://img.diytrade.com/cdimg/1913872/26131038/0/1338791209/EasyN_wifi_support_SD_card_IP_camera.jpg)
Clever stuff, looking forward to seeing how this "pans" out.
Mines done I must post a picture :)
Looking Good GD. I have been doodling some ball shaped pan tilts for a while now, but got no further than that, so... Will follow this with great interest :)
regards
Andy
Props Tim, that looks awesome. We've been talking for a while about something similar and you're going a professional job there.
OK, some more of the ball cam... Cut some shims to mount the servo and slip ring to center.
(http://i21.photobucket.com/albums/b287/ukbeast/Mobile%20Uploads/20160221_112148_zpsdoi60hmk.jpg)
Glued and fitted the shims:
(http://i21.photobucket.com/albums/b287/ukbeast/Mobile%20Uploads/20160221_123807_zps7zkmlilh.jpg)
Everything in place ready to be wired up..
(http://i21.photobucket.com/albums/b287/ukbeast/Mobile%20Uploads/20160221_124349_zpsooywdbcv.jpg)
just need to mount and test before assembling the frame.
I want one, they are showing out of stock now though ( Evo2.)
What I also want is a finish on it like shown in the shop, but I can't get anywhere near that look, how do you get it like that and does anyone offer it as a service ? :)
(http://s14.postimg.org/w4fj9sfbx/Untitled.jpg) (http://postimg.org/image/w4fj9sfbx/)
Looks like it has been solar filmed over the top of Lam?
Sent from my iPhone using Tapatalk
Quote from: Coyote on April 09, 2016, 01:04:10 PM
I want one, they are showing out of stock now though ( Evo2.)
What I also want is a finish on it like shown in the shop, but I can't get anywhere near that look, how do you get it like that and does anyone offer it as a service ? :)
(http://s14.postimg.org/w4fj9sfbx/Untitled.jpg) (http://postimg.org/image/w4fj9sfbx/)
Email Rob, that's his evo2. Does look cool
Cool cheers guys :)
They should be back in stock soon Ian, I think Rob's been waiting for a foam delivery which was some weeks late but came in on Friday (typical as it was a great day to fly).
I can cut you some cut vinyl if you need it and have the design you want, I think Rob got that look by laying down the white and red stripes first then layering the black over it after cutting the zigzag edge on his vinyl cutter.
I have a new Evo 2 in box for sale
I was going to mention that Ben.....
Haven had a proper flying session in 2 years, no point holding onto it lol
If it doesn't go..... I'll still keep it in mind.
All back in stock now, supplier of foam changes lead times like the wind direction.
Im planning to do a vinyl set for the vent like mine, and one for the falcon, in a few colours.
The vent one is based loosely on the ferrari f1 car and the falcon will be based on the renault f1 car, the two best colour schemes out there me thinks.
Just apply them after lamming the wing, can be a bit tricky to avoid bubbles
Rob
Williams for the win! :D
Thanks Rob :)
Quote from: Brucey on April 10, 2016, 09:38:03 PM
Williams for the win! :D
Just don't do McLaren eh 😬😬😬
Surely british racing green and orange Rob?
Maiden day! :o
(http://s24.postimg.org/51qrs8ekh/IMG_2351.jpg) (http://postimg.org/image/51qrs8ekh/)
Good luck- but of up trim to be safe, full throttle into the wind and a firm level throw and she will fly out of your hand.
Good luck, you certainly won't loose that in the grass!
Thanks for advice chaps...... she flew!
Trims were way off but I used RTH to launch. I doesn't feel as nimble as my old evo, which I`m kinda missing now.
It was a fun build but I`m not sure I`m gonna keep it as the size of it is a bit of a pain.
Spend some time getting the throws and expo sorted, dual rates and the CG right and you should find her nice and agile.
If she's quite nose heavy it will make her less agile.
You either like the size or you don't, the ability to carry 6-8000maH of 4s lipo is pretty nice- hence the popularity of the Evo and Zephyr.
I had two 3300mah 4s batts in it. it was up for at least 25 minutes.
I don't drive so lugging this to my flying field along with my quads is a bit of a pain. I may well stick with it but I`m gonna build another Evo. It flew spot on from the first launch, well apart from the time a servo gave up and smashed into the ground :o
Another factor is I only have two batts for this plane but a stack of 3s for an Evo :D
Had a few more flights in the week, still not doing it for me. Its going to be rehomed with a friend in Wales.
Gonna build another Evo
Well I pulled the trigger today and bought one :)
I can't see your 3D designs for the PZ or GP3 on Thingiverse Neil. Did you upload them ?
Quote from: Coyote on June 18, 2016, 01:46:00 AM
I can't see your 3D designs for the PZ or GP3 on Thingiverse Neil. Did you upload them ?
Sorry; I've been away all weekend and just getting back to things. I didn't upload them because they are "modular" and need assembling first in something like MeshLab or Solidworks. The board cam accepts a PZ0420M at the moment and I do have a GP3 version I managed to do on my plastic 3D printer for Brucey.
If you're OK with the PZ0420M + GP3/4 version then I can upload that for you. If you need another type of board cam we may have to play with the dimensions a little.
Neil.
Thanks Neil. I will have a look when it arrives. I'm looking at running a HS117 with a GoPro along side.
OK, the 117 is cased I believe, the bay I produced takes the board cam uncased.
It's here if you want to take a look: https://owncloud.numbergroup.com/index.php/s/3qFD0yyZfGx3MWa (https://owncloud.numbergroup.com/index.php/s/3qFD0yyZfGx3MWa)
I'm open for talk on how the 117 could be integrated as I know it's a top shelf camera.
Thanks Neil, just looking at it now I've got back home. The 117 is also available as a board cam so being that it is already well protected in this design of yours I would happily used the uncased version,
It says a 6 hour print so going to set it off tomorrow, see how it turns out :)
Welcome to the Vent family Ian!
Thank you Bruno :) Just had the email saying delivery tomorrow :)
Cool, if you want any build tips just ask, I've had plenty of practice! Ha!
Thanks Brucey, I am planning on a few ideas. One being after watching at Mad Dogs the problem with the glued spars and the center section failing. I'm looking at making it 3 part and able to be disassembled.
I think mine died more as a result of dodgy build, mine was the first Vent off the line and in those days they only had one spar rather than the two which made gluing the wings to the fuse a bit tricky. I defo' recommend using Gorilla Glue rather than POR on the joint between the foam and the ply section and the second spar helps keep the wing aligned during the cure.
The detachable wings sound interesting though, I look forward to seeing what you come up with.
And so it begins ...............
(http://i108.photobucket.com/albums/n39/cayote64/cayote64024/20160622_163706_zpsrv8b3i83.jpg)
Looks good so far.
Came home this morning to the canopy print finished. Thanks Neil, looks great ! :)
The GoPro bay was too small for the camera, needed a bit of help from Mr Dremel to get it in :)
(http://i108.photobucket.com/albums/n39/cayote64/cayote64026/20160623_144700_zpsqiwzcqqu.jpg)
Ah, good old Mr Dremmel. At least you didn't have to invite Mr hammer to the party too
Quote from: Brucey on June 23, 2016, 06:58:59 PM
Ah, good old Mr Dremmel. At least you didn't have to invite Mr hammer to the party too
Hehehe, yeah Mr Dremmel beats Mr Hammer when working with 3D prints any day :)
Well after having a better look at it, then looking at Neil's live cam videos I can't really see any advantage of going with the 177 camera. So I bought the PZ0420M from Rob at Flyingwings so it will just pop straight in there instead.
What length throws and how much reflex are people using? There is no mention of either in the manual.
Probably won't help much but..
Reflex, for maiden I normally use the bottom of the wing as a reference and follow that line with the elevon. Always ends up as too much but it's on the safe side.
As for throws, I've never measured mine (and I can't now anyway ha!) but I had the servo on the inner hole and the elevon on the outer. That normally makes it twitchy at cruise, but handy for slow speeds. Then dual rate of 50%
Thanks Bruno. Well it's all pretty much in one piece, the camera has arrived so I can now fit the front pod. I have though decided to dump the plush 60a ESC and ordered a YEP 100a esc and go down Neil's route for power. So the OK but gutless SK motor will be coming off as well.
Which motor did you go with Neil ? Was it the Scorpion SII 1100Kv with a 9x7.5 ?
Quote from: Coyote on June 29, 2016, 08:31:44 AM
Which motor did you go with Neil ? Was it the Scorpion SII 1100Kv with a 9x7.5 ?
Yes, but the motor is 1190Kv not 1100. The APC 9x7.5 is a good match and 100A ESC should hopefully take the abuse, I run a 120A JP EnerG Pro and even then I run a northbridge heat sink on it.
http://www.scorpionsystem.com/catalog/aeroplane/motors_1/s-30_v2/SII-3026-1190KV/ (http://www.scorpionsystem.com/catalog/aeroplane/motors_1/s-30_v2/SII-3026-1190KV/)
Thanks Neil :)
In your videos it looks like it peaks out at 80 amps, is that about right ?
Yeah, I think I've seen about 85A on this prop.
More like you average 80amps!
Hehehe
"Are you speeding up Neil ? " .........
"Err ........... no......... honestly I'm not :) "
Crazy isn't it. Scorpion wanted £116 for the SII 3026 1190kv shipped from China to me. Bit steep really but Scorpion are good motors.
Had a quick look around. Same SII 3026 1190kv motor from Robotbirds here in the UK for £60 first class recorded. Nearly half the price of the actual manufacturers lol.
I was wondering after watching your maiden the the 13km trip Neil why you swapped from 9x9 to 9x7.5 prop ?
On the maiden the 9x9 was giving you 100 kph for 10 - 15 amps where with the 9x7.5 you were pulling 20 amps just to scrape a 70 kph cruise.
Surely the 9x9 is a lot more efficient for cruising even though its thirsty at max throttle.
Mine is all ready for a maiden today !
Neil went with the North Bridge cooling approach for the ESC, I went for a more boy racer approach of a ram air intake :)
The ESC is situated a bit further forward than I hoped but cut the foam out directly above :
(https://s31.postimg.org/a4xnidfwn/20160723_142628.jpg) (https://postimg.org/image/a4xnidfwn/)
Designed a quick and dirty ram air scoop :
(https://s32.postimg.org/g262pjf4h/20160723_142539.jpg) (https://postimg.org/image/g262pjf4h/)
Grafted the two together :
(https://s31.postimg.org/qbyw1n19j/20160723_143042.jpg) (https://postimg.org/image/qbyw1n19j/)
And ended up with this :
(http://i108.photobucket.com/albums/n39/cayote64/cayote64032/20160724_080210_zpsime8apsy.jpg)
Ha, that intake is huge! I used to use half a highlighter pen lid. Hope the air has somewhere to go, the exhaust should be twice the size of the in.
Did you make the wings removable in the end?
Size matters ! :) :)
Yeah the rear is cut away for the exhaust so should be fine there.
Once the wing arrived unfortunately the height the spars are installed meant I couldn't do it, if they were a fair bit higher I could have, but then you have the spars running through the center of the airframe.
It's not the size, it's what you do with it!
Ah shame, well it's a manageable size, fits across the back seats ok.
Good luck with the maiden
Cheers. The maiden was uneventful really. Flew straight off and very minimal trimming required. It was a little twitchy on pitch but flew nice :)
Good news.
It's amazing how little throw it need on pitch.
No its not that Brucey.
How I mean is in level flight the nose keeps bobbing up and down as it flies forward. It never sits level and still.
What I initially did which I was going to try tomorrow was more nose weight. At first it seemed logical but now I'm not so sure.
When you mentioned how little throws you needed I realised mines the opposite. I moved my control horns out a hole for tomorrow. Now if it's too nose heavy then that would explain the lack of control authority. Which then would suggest taking weight away from the nose as opposed to adding some.
This still leaves me confused on the nose bobbing. I can't see how making it more tail heavy would stop the bobbing. It would change the reflex though which could be the cause I guess. :shrug:
Oh I see.
Well I always have it on the inner most hole on the servo and outermost on the elevon.
Hope your testing goes ok
What's your CG at Brucey ? 185mm ?
You mean what was it at! Ha. Yeah I think it was 185 from the leading edge of the wing section, not from the nose
Cool thanks. Flew miles better today with everything tightened up. By far the best wing I've flown.
Good news. Saw your launch video, went off very well.
Man, that looks like it's packing some serious punch!
Yeah just a bit :) 100 amps WOT today clocked 110 mph
That is probably the coolest most laid back wing launch I have seen! No stress lol. Nice one.
After remaking the hinges, stiffening the control linkages, it's still wobbling in pitch. Its really starting to annoy me now as it's spoiling a lot of shots like the one below :
! No longer available (http://www.youtube.com/watch?v=RhB5RVbqPNM&feature=youtu.be#)
Any idea what is causing it to do this ?
My Venturi V1 did this and it was one of the reasons I didn't like it, just couldn't get rid of the bobble!
Coyote- can you stick a möbius on the top of the wing facing the elevons and see if you can capture any eleven movement which is causing the bobbing? synch the front and rear cams and you can be certain then.
if it's not the elevons then who knows?! she just seems to be struggling in even slightly turbulent air?!
It is very odd, looking at iPeels videos of his Venturi his is the same, but Brucey's is not, his is steady and solid in the pitch.
Perhaps some aerodynamic affect that occurs with a particular CG?
Try a touch of downthrust on the motor, you´ll probs need a couple of clicks on the up trim.
Stumbled across this post from IBCrazy on FPVLab regarding nose bounce, not sure it will help but could be a clue -
"Nose bounce is caused by compression along the CG of the airplane. The foam is quite thin at the CG point and thus if not sparred correctly it will compress. Bowing spars makes the problem worse. This is one thing SBA does that p*sses me off. Bowing a spar is the WORST thing you can do as it causes a torsion in the airframe and weakens it. If you hold and bow a piece of flat carbon and twist it slightly, you will notice it pitches the end up greatly. This is exactly what happens inside the airplane. Since the foam is compromised due to the battery and electronics trays being cut in the center, there is almost nothing to stop this so one it starts to flex along the X axis, the Y-axis begins to oscillate. Adding spars doesn't help since the force is now translated in both axes.
The I-beam style structure works well and is required on the Wyvern and the Chimera or the plane will become unstable (and at high speeds will snap in half). You NEED the I-beam structure. A single spar will flex no matter how thick it is. You need one spar to resist compression and another to resist tension. To do this, they must be stacked with foam in between and plenty of glue to keep them from moving. This is the strongest way to spar a plane."
You'll see mine bobbing up and down loads here,it is a little better since I reduced the mechanical throws,but still does it in PA and RTH.
http://youtu.be/2HB1cUvdgjo
Hi Iwan,
Could you please link the original IBcrazy thread?
cheers and thaks
Sure -
http://fpvlab.com/forums/showthread.php?26136-IBCrazy-s-Chimera-airplane/page329 (http://fpvlab.com/forums/showthread.php?26136-IBCrazy-s-Chimera-airplane/page329)
It's a thread about the Chimera, but half way down that page he is talking about it. There's a few mentions over the next few pages I think but it's more focused around that specific airframe and sparring.
Quote from: Jake Bullit on September 07, 2016, 04:40:13 PM
You'll see mine bobbing up and down loads here,it is a little better since I reduced the mechanical throws,but still does it in PA and RTH.
http://youtu.be/2HB1cUvdgjo
Does it do it in manual mode?
No(well not as much)
Mines a V1 BTW.
Interesting info Iwan. Also James account of it not doing g it in manual ( where as mine does )
I tried over the last few days to reduce the thrust angle to see if that with a retro would cure it. I can completely on firm that reducing the angle actually amplifies the problem massively !
So I was in the process of giving it a tiny bit more when one of the launches nosed in. So I repaired but forgot to check the video feed. No video so I guess the camera wire pulled out so I will fix hat and then try again.
Hope my new one (when I get a chance to build it) doesn't do it.
Have you managed to get to the bottom of this coyote? I have just bought one and I'm anxious to ensure it doesn't do it.
Is everyone using the standard elevons? They seem awfully thin- could they be flexing a little causing the bobbing? Ritewing always use the solid prismatic type ones....
Once they are laminated they are fairly stiff
Hi Guys,
This is a weird one, not had this one myself, could be a CofG feature, maybe add a little nose weight and see.
Check all linkages, as you have done. If in stabilised mode it occurs, then reduce the pids in pitch.
Test whether it occurs in a dead stick glide !
Cheers Rob
Flyingwings
Just had a thought,
I had it once, and I remounted the camera, it was moving in the air blast, just 0.5mm or so, don't forget that a tiny camera movement in a 100-120mph headwind will look quite big on screen.
Ta Rob
Been flying mine a few weeks now and not noticed it. I will have to be more aware next time out.
sj
I maidened my Venturi Evo 2 at the weekend, launched ok and trimmed out flew around for 10 mins and decided to try a forced stall to see how it behaved. It stalled at about 17kmh ground speed, it stalled it into wind which was about 8kmh. Anyway the right wing dropped and it entered a death spiral, imapplied power and tried to roll out of it but it wouldn't. Fortunately it went in on a freshly ploughed field so there was no damage bar a broken prop. Is this indicative of how this wing stalls? What's the best way of recovery? I love the plane though, it handles the turbulence much better than the Falcon.
(http://s14.postimg.org/3sbltjoz1/IMG_0470.jpg) (http://postimg.org/image/3sbltjoz1/)
Quote from: Fr3nzy on October 26, 2016, 10:13:33 PM
I maidened my Venturi Evo 2 at the weekend, launched ok and trimmed out flew around for 10 mins and decided to try a forced stall to see how it behaved. It stalled at about 17kmh ground speed, it stalled it into wind which was about 8kmh. Anyway the right wing dropped and it entered a death spiral, imapplied power and tried to roll out of it but it wouldn't. Fortunately it went in on a freshly ploughed field so there was no damage bar a broken prop. Is this indicative of how this wing stalls? What's the best way of recovery? I love the plane though, it handles the turbulence much better than the Falcon.
(http://s14.postimg.org/3sbltjoz1/IMG_0470.jpg) (http://postimg.org/image/3sbltjoz1/)
A bit of nose weight normally makes recovery easier
Also so does adding elevon movement to exacerbate the stall and then trying to counter it, for some reason.
Yeah maybe bring the cg forward a bit. Mine used to stall really gentle and if it did drop a wing i still had enough control to pull it back.
If you end up in a spin either centre the controls or go with the spin. Trying to pull up makes it worse as all you need is airspeed to recovery and pulling up early makes the stall worse.
Have you made sure it balances left/right? Might help keeping the stall flat.
it is slightly heavier on the right for sure because that's where all the Crossfire stuff is, I did apply power and try to roll out of it. Someone else told me I should have just left it for a second or so and then pull out. I'd like to know how it behaves in such a situation and i'm a bit weary of trying it again. I was at 80 meters when I tried it. I've ordered some larger batteries which will move the CG forward however it's already at 2.2kg and the new batteries will get it close to 2.4kg. The recommended AUW being 2kg makes me a bit nervous.
Don't worry about the extra weight, it will be fine.
Add some ballast to the wing to get it to balance.
The key with spins is to get the airspeed up and not to fight the spin.
Had about two and a half hours air time on mine in the last few days. I couldn't detect any bobbing either while flying or watching video footage. Incidentally my CoG is way back behind recommend. Broke my battery y lead a while ago but wanted to fly, I like it better now with minimal sacrifice on range. I do notice quite a bit of slowing in the bumpy air, but only as I would expect. Hope that's helpful info.
Only the second flight with mine, still have some APM issues to resolve and I think I will swap it out for a Pixhawk. Seams to fly OK but you feel the weight and i'm quite mindful of airspeed (only have ground speed indicator). Quite surprised it didn't fly much longer or further than what I can easily achieve with my Falcon Evo and half the batteries. 2x 4000 4S compared to a single 4000 3S in the Falcon. Admittedly I only have Turnigy 1200KV motor in it so I should install something decent.
https://www.youtube.com/watch?v=ry7PvOVF5kM (https://www.youtube.com/watch?v=ry7PvOVF5kM)
Not had a chance to watch your video yet. I was getting about 30mins cruising with 2x 3000mah batteries, enough to do 14km return and have some spare.
Hi guys
I'm just building mine and had two questions please
Do you use uhu glue to glue to spars? Or gorilla glue?
How do you attach the motor mount?
thanks :)
Either glue will do. I've used por in the past.
You attach the mount to the rear ply plate with small bolts and nyloc nuts through the slots in the ply.
Quote from: Brucey on November 05, 2016, 04:48:10 PM
Either glue will do. I've used por in the past.
You attach the mount to the rear ply plate with small bolts and nyloc nuts through the slots in the ply.
Ditto. Although steel nuts and bolts.
With regard to battery I'm using a single 4500mah 4s. Weight of pack is about 410g. I'm typically flying around 16km flight distance and that's typically 3,000mah. Although last flight of just over 15km was only 2,200, including popping up quite high. Personally I prefer mine light with the single battery.
I'd attach a video clip if I knew how. YouTube, sj257257 if anyone wants to look. Just a few clips.
sj
That tallies with the efficiency I was getting. This next build will be using 2x 5200 4s multistars
Quote from: sj257257 on November 07, 2016, 11:11:33 PM
With regard to battery I'm using a single 4500mah 4s. Weight of pack is about 410g. I'm typically flying around 16km flight distance and that's typically 3,000mah. Although last flight of just over 15km was only 2,200, including popping up quite high. Personally I prefer mine light with the single battery.
I'd attach a video clip if I knew how. YouTube, sj257257 if anyone wants to look. Just a few clips.
sj
Interesting mate what motor are you running?
Quote from: Billy_boy_2010 on November 08, 2016, 09:07:59 AM
Interesting mate what motor are you running?
Cheapie from totem hobbies in Plymouth. Recommend size and was £23 I think. With an apc 9x6. Cheap set up. Probably not the most efficient set up, but cheap and cheerful. If you get chance to check out any of the recent videos you might recognise a few landmarks, like the twin turbines at Cornwall Services.
sj
Quote from: sj257257 on October 30, 2016, 11:22:18 PM
Had about two and a half hours air time on mine in the last few days. I couldn't detect any bobbing either while flying or watching video footage. Incidentally my CoG is way back behind recommend. Broke my battery y lead a while ago but wanted to fly, I like it better now with minimal sacrifice on range. I do notice quite a bit of slowing in the bumpy air, but only as I would expect. Hope that's helpful info.
Interesting, what CG do you have it at ?
Quote from: Coyote on November 08, 2016, 11:08:00 PM
Interesting, what CG do you have it at ?
I haven't measured it. Initially it was behind the recommended (185mm?) by about 7mm. So 192mm. I've now taken out one of the battery packs that weighs approx 410g. And moved the one left forward about 10mm. I would estimate that the CoG is now at approx 205-210mm.
sj
right I need to crack on and choose a motor for my venturi
So- for a decent balance between efficiency and speed- what's everyone running?
Have you got some decent performance from yours coyote? Did the bobbing get sorted?
Brucey what motor did you run?
Mine runs on an older ritewing Z2 motor. Best bet is to research what people use on Z2's as they are a similar size and weight
thanks ks Brucey.
Ok so this motor looks nice. should be efficient too but it's rated at 1000W so won't be a slouch! I will run a high pitch too so she's fast and cruises at a low current.
https://www.robotbirds.co.uk/default/motors/hyperion-motors/hyperion-new-zs-30-series/hyperion-zs-3025b-08-backmount-ver.html (https://www.robotbirds.co.uk/default/motors/hyperion-motors/hyperion-new-zs-30-series/hyperion-zs-3025b-08-backmount-ver.html)
however what exactly is a backmount motor? will it bolt on easy as usual? and if not what do I have to buy to convert it? there don't seem to be any additional parts for this specific motor on the website.
Advice would be appreciated!
The alternative is I buy the same scorpion motor Coyote runs but that seems quite power hungry and probably less efficient than the Os3820.
Not sure what it means by back mounted motor
It means the shaft is sticking out the other end.
Quote from: Loopdreams on November 22, 2016, 03:26:16 PM
It means the shaft is sticking out the other end.
so will it be easy to mount to the Venturi mount? will I need any extra shafts etc?
Quote from: Billy_boy_2010 on November 22, 2016, 12:31:33 AM
right I need to crack on and choose a motor for my venturi
So- for a decent balance between efficiency and speed- what's everyone running?
Have you got some decent performance from yours coyote? Did the bobbing get sorted?
Brucey what motor did you run?
I've not flown it since Greg. I'm going to try a further back CG.
Quote from: Coyote on November 24, 2016, 08:32:00 PM
I've not flown it since Greg. I'm going to try a further back CG.
Ah ok mate will await the results.
I will be maddening mine soon. Scorpion motor on its way. I'm hoping a 9x9 pitch will be efficient.
Scorpion motor sounds nice.
For what it's worth, I'm running a 9x6 prop on my el'cheapo motor. That give 100mph in still air. Depending on your motor kv 9x9 might be a bit much for efficiency. I tend to cruse at about 10 amps and 35mph.
sj
Coyote did you drill a couple of extra holes for the scorpion motor? or just manage with the standard two?
The standard two
Mines getting flown 4-5 times a week at the moment. Pushing the flights as I gain confidence and picking trips into wind on the out leg as an added safety. Venturi and Vector are doing great. I've been surprised with the range I've managed so far with video on 5.8. The Ezuhf is the weak link, surprisingly. I keep getting the link quality drop out and the vector starts a return to home as I start to wave the Tx about in an attempt to improve signal, turn back around and get back on my way.
sj
What sort of range are you getting link issues?
What aerials are you using?
Wish I could get out and fly that much. Flying into wind is definitely the way to do it, saved me once when I have a motor failure, managed to glide back a mile and land at my feet.
Nice one on the glide back. Well played indeed. Good to know your self imposed protocols are on the money. 👍🏼
Aerials are standard Ezuhf whips on a diversity rx, set in a vertical 90 degree V. Diamond on the Tx (which is the box rather than the module).
Problems come from around 800m. Signal can bounce between 1 and 100%. As I push out beyond a mile it can still drop out and can bounce back more to 40-80%. I tend to flick Tx to high if I'm pushing out. Tx wiggles always get control back, but the vector has dived Ito a return home by then annoyingly.
I have made a home made dipole. Close range testing using the rssi in Ezuhf tools suggested that it was no different in rssi than the standard whips, so I didn't bother fitting it.
sj
Only 800m, hmm. Have you used the spectrum analyser function on the Rx to see if you have any noisy components?
I'd definitely swap to the dipoles
No. I haven't as I really don't have a clue what I'm doing with that analyser, so I've left it be.
However.
I swapped one of the whips out for my DIY dipole (which frankly I didn't think was much cop) and popped over the field for a fly. Wow. I was shocked at the difference. Touch wood, zero dropouts. Link quality stayed good even as rssi got lower. Left it on low power and kept strong beyond 2 miles. Result. I guess the question now is whether to make a second dipole to pair.
sj
Your not the first person to not understand the spectrum analyser function. Maybe I should do a video.....
You should really use it though, lots of kit create noise around 433 MHz, unfortunately UHF gear isn't just plug and play, SteveW go caught out recently....
Good news the dipole made such an improvement, that's what you should see, gradual decline in RSSI and constant high link quality until the RSSI gets really low and your out of range.
I run 2 dipoles, one vertical and one buried in the foam horizontal.
It has got me pondering whether to make up a second dipole, or even buy one.
The flip side is that I must be at the limit of my video by now. Im only running 5.8 and frankly I'm surprised im getting the range I am with it. The uhf should be overkill for the control, but I'd rather have spare capacity in a system than running close to a limit.
sj
Quote from: sj257257 on November 29, 2016, 11:57:04 PM
It has got me pondering whether to make up a second dipole, or even buy one.
The flip side is that I must be at the limit of my video by now. Im only running 5.8 and frankly I'm surprised im getting the range I am with it. The uhf should be overkill for the control, but I'd rather have spare capacity in a system than running close to a limit.
sj
UHF is way way beyond 5.8. Really you don't need to worry.
I think the diversity thing is a bit of a con tbh. a single dipole is all you need IMO unless you plan on flying acrobatically at serious range. In all other situations a single dipole is more than enough.
Yeah this is true. diversity isn't necessary really.
Depending on what antenna you have on your video Rx, 5.8 can be pushed quite far.
Diversity rx was a couple of quid more than non diversity. So was a no brainier for me just to have a safety net.
The dipole does seem to have made quite a difference. God a VAS clover type on the vtx. Can't remember what one, mad mushroom maybe, or that might be the one on the vrx. But the video is now the limiting factor.
sj
The Turnigy motor on my Vent just doesn't deliver in power or efficiency so I want to remove it. I've used Eflight motors in the past and found them reliable so was looking as the Power 25. Anyone used this? http://www.sloughrc.com/default.asp?WPG=SRCM_HomePage1&itemid=EFLM4025B (http://www.sloughrc.com/default.asp?WPG=SRCM_HomePage1&itemid=EFLM4025B)
I'm no guru, but that looks on the small side.
What prop are you using? Might be worth trying a few different props. Can make a big difference on an electric set ups, and relatively cheap experiment.
Good luck.
sj
Finally finished my build. Hardest part was remembering to pack everything for the build before we moved to Kenya. Can't pop to a model shop here!
First time using a MFD AP.
(http://img.photobucket.com/albums/v432/BrunoV/57C5A4E2-F072-4ECD-BB10-66BB096CE793.jpg) (http://smg.photobucket.com/user/BrunoV/media/57C5A4E2-F072-4ECD-BB10-66BB096CE793.jpg.html)
Heading back to the UK for xmas, so the maiden will have to wait.
Looking good. Hopefully some chances for some amazing video too.
Thanks. Yeah looking forward to getting it trimmed and sorted so I can get some flying down
I'll be looking forward to the videos. Looking to get out today and get some flights in.
Pushed the range a bit yesterday and was pleased to see video holding up at 4.5km. Much better than I'd expected.
Still loving the Venturi.
sj