the pics are of half the lam stack.
heres some stats:
stator diameter: 170 mm
stator width: 80mm
# teeth: 18
# mags: 16
lam thickness: .33 mm












liveforphysics wrote:That motor doesn't look bad at all.
I'm going to guess it's from a quality electric mower perhaps?
Nice. Price and Source for just the motors? (i assume you didnt strip these off complete bikes?)Farfle wrote:Its an ultramotor, similar to a bionx. Its wound with 30 turns of what looks like 18awg. They are found on stromer ebikes and on the A2B metro.
It should be a pretty beefy motor, for sure. Got any idea what it might weigh all built?Farfle wrote:Thanks for the info on chain. The stock UM was fine at 5kw, this is two motors, rewound with a better copper fill, and spinning three times as fast with a slick centrifugal fan on the end, somewhat astro-esq. How much Hp do you think a well cooled 175x80mm outrunner can make?
Don't you mean 2 ? Sounds like a great project, can't wait to see the result.Farfle wrote:...an ultramotor...
Yeah, I have two of these stators that will be mated together, sorry for the confusion.John in CR wrote:Don't you mean 2 ? Sounds like a great project, can't wait to see the result.Farfle wrote:...an ultramotor...
When you said it was 80mm I figured it had to be 2, maybe even 3. With that wide a stator I'd definitely recommend one side intake and other side exhaust to ensure good air flow through the magnetic gap as well as through the stator. If you can work an even bigger axle pipe than the your double pie then it could be your intake point making lots of things possible including a ducted fan to force feed air as well as have good ventilation of 100% of your wiring length.Farfle wrote:Yeah, I have two of these stators that will be mated together, sorry for the confusion.John in CR wrote:Don't you mean 2 ? Sounds like a great project, can't wait to see the result.Farfle wrote:...an ultramotor...