Electric Bikes - do Crystalyte motors have a gearing 'drag' when freewheeling???

Bikeforums.net is a forum about nothing but bikes. Our community can help you find information about hard-to-find and localized information like bicycle tours, specialties like where in your area to have your recumbent bike serviced, or what are the best bicycle tires and seats for the activities you use your bike for.



PDA
callagga
04-05-09, 06:33 AM
Hi,

Is the following true (this is my interpretation from the ebikes.ca website):
(a) non-geared (direct drive) hub motors: have a "cogging torque"/"motor drag" when not using electrics
(b) geared: hub itself can freewheel (without any motor drag)

So does this imply the 400 series Crystalyte hub motors have such a "motor drag" when not using electrics then?

Also is it true to say conversely that non-geared(direct drive) are quieter than the geared?

FollowYourHeart
04-06-09, 03:10 PM
Hi,

Is the following true (this is my interpretation from the ebikes.ca website):
(a) non-geared (direct drive) hub motors: have a "cogging torque"/"motor drag" when not using electrics
(b) geared: hub itself can freewheel (without any motor drag)

So does this imply the 400 series Crystalyte hub motors have such a "motor drag" when not using electrics then?

Also is it true to say conversely that non-geared(direct drive) are quieter than the geared?

Yes non-geared is quieter than geared. Also direct-drive's have less maintenance as there are no moving gears inside that will wear out and need changing.

It's true that there is a cogging effect with some motors and sometimes you can feel it, but it's not significant enough to really matter, especially because you are using a MIX of human and battery power. ;)
Adam_waugh
04-08-09, 12:03 AM
Thanks for sharing.I am also looking for this information.