GoldenMotor.com Forum

General Category => General Discussions => Topic started by: boysen on March 20, 2009, 01:41:40 PM

Title: What fork to use
Post by: boysen on March 20, 2009, 01:41:40 PM

Can someone suggest some fork with suspension to use with 500W 36v front motor....I use http://www.chainreactioncycles.com

Motor
http://tinypic.com/view.php?pic=4u6w0j&s=5
 
Broken fork
http://tinypic.com/view.php?pic=29w3ibs&s=5
 
Broken fork
http://tinypic.com/view.php?pic=2jazz39&s=5
 
Bike
http://tinypic.com/view.php?pic=2whqmbb&s=5

Title: Re: What fork to use
Post by: Perbear on March 20, 2009, 10:01:15 PM

You have two options:

1) Reinforce a standard aluminium suspension fork with sturdy torque arms on both sides. This will reduce the stress causing fracture in the aluminium wheel nut lugs. Torque arms can be homemade or bought:
(http://www.ebikes.ca/store/photos/TorqueArm14.jpg)
You can get them from various sources, here are two: http://www.ebikes.ca (http://www.ebikes.ca) and http://www.velectris.com/catalog/ (http://www.velectris.com/catalog/)

2) Use a steel suspension fork, they have much stronger wheel nut lugs. Schwinn use forks with steel bottom half (the part with the lugs on) on their Campus electric bicycle. Such forks can easily be found on the internet - google for "steel suspension fork". A bit of warning: Schwinn has a 180W motor on their bike, not 500W...

Good luck, and check your wheel often!

Perbear