Stefan Mikes
Gravel e-biker
- Region
- Europe
- City
- Mazovia, PL
@mschwett has explained the phenomenon very well.Well if I weigh 180 lbs. and the bike weighs 60 lbs and I want to climb a 50 foot hill with a 8% grade, the amount of "work" to be done is the same regardless of the bike. Assuming my riding adds the same power on two bikes, a bike with 50Nm torque motor is going to be pushed much closer to it's maximum capacity than a bike with an 85Nm torque motor. Motors that spend more of their life running at close to their maximum capacity wear out faster. I'll assume we can agree on that.
The low power motor would only be used at its higher capacity compared to the full power one if you attempted riding both e-bikes at the same speed, which usually is not the case. Motor noise is not about how ‘hard’ the motor is working; it is about how the internal motor gearing is designed. The SL 1.1 motor produces the whine both at high and low assistance, and the whine becomes louder at high pedalling cadence.