Torque

[Andy1865]

How would i find out what the torque is on a 2000watt ebike that has 56volt/15amp hour battery and 40amp hi-powered 18 mosfet controller. The wheel size is 29 by 2.25. Im 101kgs, 5'10" and eMTB which is a converted Coyote Lexington 21speed weighs in total 36kgs(bike and ekit) Any help on this subject would be helpful. Ive two 12% gradient hills to go up approx quarter of a mile long. Would this ebike get up the hills with ease of pedalling or no pedalling. Thanks. Andy.

 

[Feliz]

After reading your posting I'm as curious as you are, short of a dyno for bikes of which there are few around I don't know how anyone would know.

 

[steve marino]

Why don't you go with a mid drive setup? Since that's going to work through all the bike's gears, you can probably get what you want with a lot less power by simply gearing the bike down on grades and pedaling along w/ it. 12% is a steep grade, but it's "just" 1320' (I used to drag race), so it's doable with motor help.

 

[Andy1865]

Thanks Steve

 

[JRA]

Additional torque can be achieved with a hub drive by pedaling in a high enough gear ratio also.

That said the system you describe should more than handle a quarter mile of 12% grade with a bit of pedal input.

You don’t indicate if you have a direct drive or geared motor but both should be ok. Just be careful of using full power for extended periods that will cause overheating in any electric motor.

 

[Andy1865]

Its a direct drive and throttle only.

 

[JRA]

I wouldn’t stop and start aggressively on a steep grade but with a run at it you should be fine.

 

[Andy1865]

Ok thanks JRA

 

[Andy1865]

Thanks Mike