After lots of faffing I'm finally at a stage I can start putting things together. This is my 1st "serious" build after only having built an AXN and a QAV250 quad.
A massive thank you to all forum members who have helped me being to this point. Thanks especially to Blueflyer.
Components:
Vector
Frsky L9R
Sunnysky 2216 1250kv on 4S
8x6 prop
4 Turnigy TGY-90s 9gm servos
IMRC 600mw vtx
Bignose skew antenna
Foxeer fpv cam
Turnigy plush 40amp ESC
Turnigy sbec 26v
And not to forget a variety of butchered cables and copious amounts of velcro!
I plan to be quite detailed on this build because as noob I was left scratching my head sometimes as to what connected to where, what to buy and what cables go where. Well that's the idea anyway!
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I'll add annotation once the build is complete. Im quite pleased the front skid and l9r antenna holder came out ok.
Will that ESC be enough?
I'm pulling 28A on 3s, 7x5 prop on a 1400kv motor
Probably not. I've feked everything else up! :+
I had hoped it will be enough?
Is it ok to mount the GPS module directly on top of the vector??
I carved a well out of the lid so it was exposed but pretty much flush.
Looks good to me.
I would hope 40A esc would be enough?!
How comfortable are you flying your axn now?
Don't spend too long building the talon- you will crash. And whether you spend 5 hours or 15 hours building- it will still crash the same........after my first heavy landing/light crash I always enjoy flying a plane more.
Quote from: Billy_boy_2010 on December 22, 2016, 04:33:57 PM
Looks good to me.
I would hope 40A esc would be enough?!
How comfortable are you flying your axn now?
Don't spend too long building the talon- you will crash. And whether you spend 5 hours or 15 hours building- it will still crash the same........after my first heavy landing/light crash I always enjoy flying a plane more.
I'm glad the 40amp looks to be ok.
I'm fine flying the axn since throwing fpv on it. It really helped me get a grip of how much input I needed. So in retrospect I should have gone fpv from the maiden and then once the muscle memory was there switched to Los.
I don't plan on kicking the arse out of the build. As we speak the MT has been dry fitted and all (Inc Runcam2) the components masking tapped on with the battery in place. It's CoG is right on the forward spar.
P
cool. get cracking and get it in the air over Xmas then! :)
Use the AXN for LOS training then. It's a vital skill.
Quote from: Steve W on December 22, 2016, 02:39:46 PM
Will that ESC be enough?
I'm pulling 28A on 3s, 7x5 prop on a 1400kv motor
40A is more than enough for the 1250kv sunnysky... if it's of any consolation to you... the motor itself will melt if you pull more than 28A for a prolonged amount of time... your 40A ESC will be fine, but you may find you have to glide your MT home lol
I'm actually running the same motor (albeit with a 8x5 prop) on a 30A ESC which has a 40A burst current rating.
Well my original plan of the maiden prior to the 25th is off the cards due to a 2yr olds expectation of father Christmas and Christmas dinner for a family of 5..... I'm the only one able to make chrispy roast potatoes and land a full dinner on time .... But that said I'm a whisker away from a maiden.
Thanks
P
We'll here is a memory for prosperity. This is what she looked like. Tomorrow she will either look dirty at best or be polystyrene packing material!
She's as good to go as she'll ever be.
(https://s24.postimg.org/y4v6q73ap/IMG_20161230_215156.jpg) (https://postimg.org/image/y4v6q73ap/)
Quote from: SnoozeDoggyDog on December 30, 2016, 10:56:25 PM
We'll here is a memory for prosperity. This is what she looked like. Tomorrow she will either look dirty at best or be polystyrene packing material!
She's as good to go as she'll ever be.
(https://s24.postimg.org/y4v6q73ap/IMG_20161230_215156.jpg) (https://postimg.org/image/y4v6q73ap/)
:laugh: :laugh: :laugh:
:(
Good luck :) Looks great :)
Thanks Steve. Very nervous. Butut I know more than I did lobbing my axn up and watching it crash at least 5 times before it flew! Plus its stabilised.
P
Have you set everything up properly including the CoG? You'll know if it is set up properly once it's in the air because it'll either fly like its on rails, or badly :laugh:
I was amazed at how much difference a little bit made on the CoG position on mine - aim for slightly nose heavy if in doubt.
Morning
The CG is bang on the main spar and level. I'll be checking again today as I've added some tape to the wings and tail last night. Oh and I need to add a gain nob for tweaking stability.
Cheers
P
MAIDEN
So here it is finally. I dont know why but the artificial horizon was below the real horizon just before chucking it up but I never noticed until part way through the flight. I then couldnt remember how many time I needed to throw the mode switch to set level. But anyway, the nose constantly wanted to dip despite cg being bang on the main spar. Prior to flying (back in the garage) I set level using a spirit level to ensure things were bang on. So not sure why the nose was dipping.
I forgot to press record on the runcam so most of the footage is from the Eachine 5800 div monitor which let me down mid flight.
I ended turning the stability gain down to about 20 part way through the flight which made the talon far more fun ... it felt like I was actually fling it. I may well have the 2nd position on the mode switch turn it off altogether. Due to the nose issue i didnt test RTH.
Still disappointed with the imrc 600mw 5.8 range at 600m ish. When i have the nose issues sorted and I'm a bit more confident i'll try more height and see if range improves.
Comments greatly received on what the problem with the nose might be.
congrats on a successful maiden, bet you were bricking it just before launch... I always do lol
When you set level on the workbench, you need to make sure that the wings are level with a spirit level, but have the nose pointing upwards a bit to give it some kind of angle of attack, when a plane flies straight and level, it's hardly ever perfectly horizontal when looking at it from the side... there's always a nose up angle of attack.
This will be why it's dipping its nose, its actually trying to get the vector to the same "level" setting as what you gave it in the workshop. When the plane is pointing perfectly forwards with no angle of attack, it will naturally lose altitude.
Quote from: BlueFlyer on January 01, 2017, 09:21:57 PM
congrats on a successful maiden, bet you were bricking it just before launch... I always do lol
When you set level on the workbench, you need to make sure that the wings are level with a spirit level, but have the nose pointing upwards a bit to give it some kind of angle of attack, when a plane flies straight and level, it's hardly ever perfectly horizontal when looking at it from the side... there's always a nose up angle of attack.
This will be why it's dipping its nose, its actually trying to get the vector to the same "level" setting as what you gave it in the workshop. When the plane is pointing perfectly forwards with no angle of attack, it will naturally lose altitude.
I was crapping it but not as much as when I threw the axn! It's degrees of exposure I suppose. I knew I could fly LOS with stability on ... the axn didnt have stability. So getting the throw right on the Talon was my main concern. I had your and Coyotes words ringing in my ears "give it full beans, full throttle". And off she went!!!
Yep I use a level but set it level on both planes. Thats great advice thats Chris, I'll nose her up.
Thanks again for all the help I've been given. Cant stress enough how great this forum is.
One thing to bear in mind with the artifical horizon not matching the actual horizon is something very basic. The OSD has absolutely no idea what angle you have your camera at. It puts the line in the middle of the screen when its level.
Due to the tilt of the camera the horizon in your picture won't normally be in the middle because we normally tilt our cameras down a bit so you see more land than sky.
Now looking at your video it's way off because you set level when the plane was level. But planes don't keep a level cruise while they are level, it's always nose up. You can see this in the video, you have to give it climb in evaluator to keep it flying level.
I just learned (or at least kind of realised) two really useful things about AP's and AH's.
Cheers Blue & Coyote, mucho wisdom :)
I did indeed set the plane dead level, no nose up. I'll address that issue before my next flight. How much nose up? 5 degrees, 10? So understand correctly I do not adjust my cg until i get nose up, I set my GC as it should be and then wedge the talon up by X degrees and then set level ?
I do have a very small amount of downward tilt on my fpv cam but not more than 5 degrees.
Great advice though
Thanks
Quote from: Dillwhacker on January 01, 2017, 10:11:36 PM
I just learned (or at least kind of realised) two really useful things about AP's and AH's.
Cheers Blue & Coyote, mucho wisdom :)
So much wisdom, I have no idea why their heads don't pop!
Each plane varies. With the Talon I think it was around 5 degrees nose up was fine.
My preference is to overestimate how much nose up to give... I prefer my plane to try and nose up instead of flying towards the ground lol.
I never really measure how much attack angle I give it, I just use my mk1 eyeball and adjust again afterwards.
Quote from: Coyote on January 01, 2017, 10:17:17 PM
Each plane varies. With the Talon I think it was around 5 degrees nose up was fine.
Rodger. I'll sort it out. I'm off work till the 11th so will be giving it some hammer.
Thank you
Any maiden where you end up with the same number of bits that you came with = happy days :) :)
Lol, it was a relief to get it down. And even less dirty than I expected!
was this with a 8000mah on board?
nice, told you it would take it :)
Quote from: BlueFlyer on January 01, 2017, 11:18:46 PM
nice, told you it would take it :)
It wasnt a hard chuck either. Nice one. And they only cost me £23 each
Quote from: SnoozeDoggyDog on January 01, 2017, 11:47:05 PM
It wasnt a hard chuck either. Nice one. And they only cost me £23 each
Yeah, you had to wait an age for them to arrive though lol
Quote from: BlueFlyer on January 01, 2017, 11:56:30 PM
Yeah, you had to wait an age for them to arrive though lol
They did indeed .... not as long as your motor :P
Quote from: SnoozeDoggyDog on January 02, 2017, 12:00:58 AM
They did indeed .... not as long as your motor :P
haha, you're right there... some poor bugger on facebook is still waiting for his motor and he ordered his before me lol
Quote from: SnoozeDoggyDog on January 01, 2017, 11:08:30 PM
Yep
Same batteries I use, had three at the start of the summer and they are all in good nick after some serious use.
Chuffed the maiden went well, spend time on getting it well dialled in and the RTH sorted before pushing it, MT still has my personal best for distance and has great manners which build confidence and air time.
Thx muts. Yep I intend getting things right before any shenanigans occur. But today even with a constantly dipping nose it was still flyable and glided into land from about 300m away. I think it was about a 25mph landing, no issues.
Quote from: SnoozeDoggyDog on January 02, 2017, 12:51:44 AM
Thx muts. Yep I intend getting things right before any shenanigans occur. But today even with a constantly dipping nose it was still flyable and glided into land from about 300m away. I think it was about a 25mph landing, no issues.
Congrats Snooze.....on your MT Maiden.....looked good to me m8....Its good seeing a noob with all the Top Draw components having such obvious success....Well done mate..
Now you are FPV hooked for sure....lol.
:vulture:
Lol ET .... The irony
More to follow. 300ft at about 450m away. New Talon ordered.
(https://s29.postimg.org/rhdk8treb/IMG_20170102_132159.jpg) (https://postimg.org/image/rhdk8treb/)
Quote from: SnoozeDoggyDog on January 02, 2017, 03:52:45 PM
Lol ET .... The irony
More to follow. 300ft at about 450m away. New Talon ordered.
(https://s29.postimg.org/rhdk8treb/IMG_20170102_132159.jpg) (https://postimg.org/image/rhdk8treb/)
Awww. Tis but a mere scratch.....pretty sure when you examine it it will glue back again.....I think some steam from the electric kettle might help....That and some decent careful use of the Hotglue Gun.
Did you loose Video before you had the model flying level and in RTH Mode?..,....I noticed you were a bit low and far out for 5.8G...she covers a lot of ground quick, unlike the old AXN...?
:vulture:
That#s just a flesh wound - glue her up :) Mine was worse than that when EzUHF stiffed me and it still flies spot on :D
That's definitely a fixer'uper especially while you are learning how / what order to correctly set things up. Replacing it each times going to get very expensive very quick.
Bit of steam. Bit of glue she'll be reet ;)
Yep - definitely a test bed, just enjoy flying it and learning off it. Rite of Passage for any new airframe :)
Get that 1.2 gear on it... won't run out of video range in a hurry lol
On no :( Is there a clue in the aileron angles?
Well it all went tats up today. I must state though I'm not down, not saddened. Just glad I eventually got all the bits back. I had a total loss of video 500m out. Hit RTH but nothing returned. I set off on foot for the last known position DVR and phone in hand just in case I needed co-ords checking. Luckily the talon wasnt far from where where I lost video. I had earlier been flying at a further distance than when i lost signal on this occasion. I can only assume that the farm house between me and the talon affected the fresnel zone. I was 300 ft up and 500m so it shouldn't have been an issue.
Before anyone asks no i didnt test RTH on this flight. I still had slight nose dipping issues so thought testing rth would end in disaster. I've since been told RTH would try to maintain alt so therefore try to keep the nose up. You live and learn!
Opinions welcome, good bad or ugly
https://goo.gl/photos/7VKT4e1wMVtVbad36
Battery 1 was a blast and I was going to call it a day. But I thought to myself that I couldnt waste such good weather. In went battery 2 .... nuff said. Ive got loads of HD footage of battery 1 flight from ground and in air but I cant be arsed editing tonight. I'm just off call and want to sink a bottle ;-)
There is a short youtube vid of the dvr fooatge. The HD footage on the runcam must have saved due to sudden loss of power. There is also a link to some photos and short videos of me searching and finding the Talon.
Ive just been informed my newly ordered talon has been dispatched. Fingers crossed i'll be in the air by Friday!
Well you're not getting interference from the ESC...
Firstly because the interference will be there all the time if that were the case... ESC interference doesn't all of a sudden just happen at range.
Second, you're using a Vector and by design it has filtered voltage outputs to power the fpv camera and vtx.
Thirdly, your ESC is at the back of the plane, the Cam and VTX are at the front... quite literally as far apart as possible on the MT.