For who try/have tried direct drive with outrunner


#224

I have another thought. Wondering what you think. I assume you know of the APS-70110, Water proof 70mm outrunner Alien motor that is in a Stainless Steel can. That motor seems very similar to the motor Jsonnett is building. MaxMaker and some others are using this new motor. It might be the same motor in a different can. Would you expect to see the same problem with that motor?


#225

Hi PowerGlider,

Do you have a model of your prop? I’m looking at the 80100 motor(130kV or 80kv/7000W) or the motor you are using. The 80100 may be overkill. I don’t think I need that much power. Wondering what you prop pitch is? I don’t think you are foiling but its probably enough power to get lifted.

thanks
Mike


#226

I can confirm, 80100 is overkill.
but after doing a full complex build for month and ending up under power, overkill is a nice option… at least it works, i just started a thread showing how i used it.
I have the 80 KV version. I use a Solas 0001-073-06P so pitch is 6 inch, and it seems appropriate. Top speed might be a bit high, but that might be just because i’m starting, and who doesn’t like a bit extra speed ?? :slight_smile:


#227

that sounds good Mat and I agree…I’d rather have too much power. :smile:
Do you know how much torque that motor has? The power glider motor has 6.9nM which
I think is enough. Ok, look forward to seeing your posts on your set up. I’m getting close to ordering parts…and then I’ll share.


#228

No idea about the torque… all i know is that it works… and the motor doesn’t seems to struggle too much to rotate the prop. All i can say for sure is that it doesn’t stall.

I installed a power meter to get more data when riding, but that’s a big failure as i can’t read it when riding and it doesn’t record the data…

My build is in the thread “80100 direct cooling”


#229

Pop a gopro on and aim it at the meter :slight_smile:


#230

Sorry, i do not have any model or STL files of the props i am using. All of them are commercially.
First model was 7 1/4 x 5", cut back to around 170mm in the old duct
2nd was the same but cut back to 137mm in new duct
3rd is 7 1/2 x 8" cut back to 137mm. I also plan to test 7 1/2 x 7" and also cut it.
All have pinion drive, the later ones i also cut the hub to adapt to the motor to make it shorter. The better quality was the Yamaha branded.
Have a look here:


You can also try the plastic Solas ones, like Mat, i did not use them but thought about.


#231

ok thanks. I will get a few to test. What dia are you getting the most thrust out of? and which the most speed? Is the yamaha the best performing?


#232

im using 2x 83100 watercooled outruners… and you say your single is overkill haha


#233

they are rated for the same power as the 80100 so i think you have the right number… if you’re building a family foil :slight_smile: