recumpence wrote:Agreed, an idler would be needed.
I like the serial drive option, except that I do a lot of pedal only riding too and use the motor for hills and what-not. A serial drive has noticeable added drag. Non-serial drives have much less drag and seems to be roughly the same amount of work to complete.
MitchJi wrote:Serial drive the pedals and motor turn the same shaft. If there is a FW on the motor end of the shaft I think the only extra drag when pedaling would be (if I'm missing something let me know):
1. the longer shaft
2. the friction of the FW
3. possibly a crooked chain line
I don't think 1 and 2 are significant. Marcus (who did a lot of testing) told me 3 isn't very much.
Miles wrote:Yes, that would be better for pedalling but less efficient for the motor. There's no ideal set-up - pick your compromise for the intended use.
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