I only ever did a rough test in the pool and didn’t get any power values etc. I was holding the motor with my hands and I can confirm it has a fair bit of torque (was rotating in both my hands) and a fair bit of thrust. But it got hot quick, the motor was partially submerged deep enough so the 3D printed prop wouldn’t cavitate.
Maybe it could work. But I didn’t bother with it. I’m confident there is enough thrust to maintain fouling but probably not to get up from a start and it would be pretty low power.
Yep work for me : 1,54Nm for my first step up with a 40mm , these was what i measured with rpm , rpm drop , I , Rm … at the time
But I guess it s all depending on the correct I max , and it hard to get correct numbers for motor , and what it is I max really ? : just before everything is burning ? And how long can it hold that value ?
I got around 1,5 Nm on my motor but it was kind of continuously , more than 250A pics for take off , even if the number was hard to record at this amp value by my esc at the time ( I suspect)
a 80100 can easily pull more than 180A for take off ( for sure) which give 12Nm , and I think it s capable of a lot more before it is stall if well driven , so I am not really sure what s stand for « max » , as well as « continious »
I guess we’ll rely on manufacturer’s specs That’s how we know about those values.
Just like the SSS56114 inrunner capable of 13kW peak but stated Imax is 93A @ 130V for the 360KV value, which gives me about 2,1NM.
I know it can pull way more A, but still, that’s what the specs gives.
I just had an interesting idea. Based on this formula I calculated the torque of the FR motor : (8,3x100)/130 = 6,38NM
I took 100A peak but I think you can pull more to get on plane. Feel free to correct me.
6,38NM is better than the other outrunners haha. That’s how they get so much punch !
Still, the purpose was just to see if the formula works and it does, which is nice.
I think the reason why many broke the coupler is because you get up to 20NM out of the gearbox PLE40. The above formula only gives you the torque before reduction.
Well then, if the FR motor is set to 130A you get about 8,3NM peak out of the shaft. I’d love to design such a motor but can’t find any company that manufactures a custom BLDC motor with all my specs…
Do you know any company based in EU ? I tried at least 4 differents but never got any answer…I am based in Belgium
I did, but would rather love to build my own motor on my side. Sadly I don’t own the necessary equipments. So, still open to any company that makes custom bldc motors in EU.
Remember, from a custom point of view : the more options the lower the total costs
http://www.sitemelettromeccanica.it/eng/electric-motors-prototype/
This is quite a good Company, they design and produce very interesting motors even as prototype, when I see the price for motor at work and the outstanding quality, Maytech prices really pisses me off, but I don’t know how much it could be for a single prototype. I never asked so far, don’t want to mix work and pleasure more than the strictly necessary…
Wow, this is such a nice motor prototype !
This is supposedly my field but yet, I never got he chance to study the magnetic filed in such a motor. Will definitely give a try if I can. Thanks for sharing
That’s how we know about those values.
