Quote:
Originally Posted by sendler
I think they were asking about the gear reduction from the motor. What is the motor rpm rated and what is the crank rpm if you want to pedal to add to the top speed? What is top speed while pedaling on top of a 500 watt motor?
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The gear reduction from the motor to the sprocket is 96/11 or 8.73:1. The final reduction ratio to the rear wheel in 1st gear is 9.553:1, 2nd gear is 8.612:1 and so on.
The motor is 0-2500 (variable, obviously) rpm max.
The crank rpm is dependent on the selected gear. In 1st gear, you will not be able to pedal fast enough at top speed to assist but simply shift into 5th and you can begin to add pedal assist and can add more by shifting to a higher gear.
As for top speed, I haven't been able to "maintain" speeds in excess of 30.4 (flat surface) with pedal assist. I can get above that but wind resistance is high and hard to overcome. This is honestly an area I haven't studied much b/c I tend to rely on all electric (I'm lazy). I will do some tests and report back.
Top speed in all electric is 25mph and is limited by wind resistance (little to no wind, flat surface). I'm guessing a 350W motor would get you about 18mph (if your lucky).