3D Printed Motor on an Ultralight! 

Christoph Laimer Thank you for sending us such an amazing motor! Your design was amazing and you truly inspired us and many others with your amazing 3-D printed creation. Keep up the great work brother!

Great job Christoph!

Hey Josh, what actually happened (the pop and sizzle)? Did the 12 cell fry the motor?

ElyssaAnderson yeah that’s what I was gonna ask

I met FliteTest BECAUSE of Cristoph Laimer and this aprticular motor! =)

You are on to something as a guy in Arizona. My Bafang motor gets pretty dang hot! Maybe like an RC boat electric motor cooler would work? Just water flowing through a heat sink from the lake. But add a radiator and pump, and BOOM! You got this man. Make that dream a reality!!!!! If you design it to work with Bafang motors as an add on, you would sell out.

Christian hahaha!! Totally got stood up bro! Haha hilarious 😂- stefan

✋

rst that was lost of motor power - or better to say, he lost the motor at self - it goes broken in this moment. I though at first that was lack of the battery power.

The spool fried because a wire size diameter small. Big current.

I'm just a nobody on the internet, but that doesn't sound at all like how *typical* flaperons or flaps would affect performance. They certainly *can* offset the center of lift if they are not located over the center of lift already, but they are fundamentally failing at their intended role if they are not increasing lift (and drag). Offsetting CoL is generally an undesired (and avoidable at the design level) side affect, not the intended function. I'm certainly not trying to correct you on doctrines of use for your aircraft. I've never seen or studied it before, and am just discussing the more general applications of what you have said. But as I understand it using flaperons to trim pitch should be *far* less effective than using the elevator to do so. I'm more inclined to think that the Challenger Ultralight is an outlier, due to the mid-length, high mounted engine. At first I thought it could be because of deflection of air into or away from the propeller, but pictures I found online were inconsistent about where the ailerons started, with some seeming to start at the root of the wing, and others only starting after they cleared the propeller's radius. Just making a guess, but do the flaperons on your aircraft start at the root of the wing?

Almost all of the way to the root...here is a picture(not the best, but the only one I have). Almost the whole trailing edge of my wing is flaperon. They actually deploy in both directions with a hand crank above my head. facebook.com/photo.php?fbid=10209513091903494&set=a.2432631794489.86899.1812492490&type=3&theater

Well that's just, like, your opinion, man.

I've flown a challenger (As well as 30 or so other types of aircraft), and I will say that while the flaperon trim method on the Challenger is pretty weird, it seems to work.

Yes !, it is quite weird and works rather well, too. Frankly, I think that the design purpose is to provide both trim and accommodate a wider range of pilot weight.

Logan F I agree!

Andres!

Yeah, that was pretty subtle. I had to go back and watch that a few times. Hard to see the smoke, but it's there. One thing that I wondered about was the ratings of the larger bearing at the back of the motor... That bearing is only rated to 3,500 RPM... very thin profile (6mm x 6mm cross section), those bearing balls have got to be screaming...

Kara That's been done in a A.M.A. magazine back in the 70's. The guy would pretend he was pushing the lawn mower and it starts to get away from him. He starts to chase it around on the grass when all of a sudden it took off and started to fly! There were plans for it in that magazine.

Melissa Schirmer that would be awesome!

i was going to say a scaled down version of this would be epic. Love the big guy but a 1.2 - 2.0 m version would be a sweet spot I'd buy the STL's tomorrow.

RCSpectrum tv we give the stl and plans away for free. :)

I’m game for that 😆👌

PeterSripol sounds like we have an epic colab in order brother! Love your new design!

A. Malik 😂

Nolan Burke looks like it!

looks more like an edge 540!!