Chromoly for front motor?
Question for all the knowledgeable electric bikers here -
Should a chromoly fork be strong enough to use with a front drive motor? |
Yep
|
Depends on how safety conscious you are. There's a long-standing debate on the Endless Sphere forums on whether any hub motor is safe. Even hub motor aficionados there admit that a hub motor mounted on the rear wheel is safer. Why, even the drop outs on steel forks can fail after exposure to the torque of a hub motor mounted in the front wheel and there are reported occurrences of that happening in different threads on Endless Sphere. Regardless of whether you get a hub motor that's laced into a front or rear wheel, you need torque arms. Good luck. Be safe.
|
Well, you could always install torque arms, they are cheaper than the alternative.
So long as you don't use regen I see no risks... |
I think it's pretty safe. I have two front hub motors. One on steel fork and one on a chromoly fork. The chromoly one has a hub motor that is doing about 2000 w of power and not having any trouble. If you want to be super safe, get a rear hub motor or if you really want a front one, get a 20 amp controller and use about 48v of batteries . The power would be about 48 x 20 = about 960 watts which is half of what I'm using. That'd be less torque but probably safer. I use a 35 amp controller and I have two torque arms on it. I've gotten my bike up to 37 mph. It's pretty safe I think.
|
Originally Posted by morph999
(Post 10715248)
One on steel fork and one on a chromoly fork.
But the original question is missing the main point - you can build a strong enough fork out of lots of different materials and you can also build a weak fork out of those same materials. A fork that was designed to be as light as possible while just being adequate for the forces encountered during normal cycle use may well have problems when you add a high-torque hub motor - and that'll be the case no matter what material is used. |
All times are GMT -6. The time now is 03:00 PM. |
Copyright © 2024 MH Sub I, LLC dba Internet Brands. All rights reserved. Use of this site indicates your consent to the Terms of Use.