Miles wrote:I think you need to start again with the whole freewheel assembly.
Miles wrote:Alien give a maximum torque of 9.5 Nm for their 80100 motor.
So, that would be 95 Nm after the 10:1 reduction.
yes, probably need to recalculate and reproject all the reduction ratio, starting from the motor costants.
perhaps could be useful to complete the following list:
MOTOR: 80-100 reterminated in wye
MOTOR TO APEX GEARBOX 14:11?
APEX GEARBOX 1:10
APEX/DALTON TO JACKSHAFT MOTOR INPUT: 24:15?
JACKSHAFT COMMON OUTPUT: 21t?
FREEHUB CASSETTE CLUSTER : (standard? custom?)
JACKSHAFT PEDAL INPUT (has the same bearing?) : 11t?
CRANK PEDAL SPROCKET: 16t?
If those numbers are not exact, I think they are very close, so with an hypothetical slow 120kv motor we have:
120rpm*48 =>5760rpm*1.272*0.1*1.6=>1172rpm (at the jackshaft)
And 9.5 Nm*11/14*10*15/24=>46 Nm
And with 100 of cadence we have
100rpm (pedal)*1.45=> 145rpm (at the same jackshaft, an order of magnitude is missing there....
Than we have a 21/11-36 or whatever....in the motor figures that's a 500 to 1500+ rpm spinning wheel
Seems there's even the same one way bearing at the JShaft pedal input....It should sustain the human torque * 0.68 when loaded?.....again it's undersized I think