Advertise on Bikeforums.net



User Tag List

Results 1 to 5 of 5
  1. #1
    Senior Member
    Join Date
    Jul 2009
    Location
    Somerville, MA
    Posts
    208
    Mentioned
    0 Post(s)
    Tagged
    0 Thread(s)

    Building an Electric Bike

    So I am building a new electric bike. I am planning on getting a front-drive kit from Amped. The idea is that I am going to get a Townie comfort bike and then apply the kit to it. From what I understand Aluminum forks aren't the best for front-drive motors (I actually witnessed one get completely bent out of shape after hitting a fairly nasty bump).

    What replacement forks would people recommend for use with a front-drive motor? Are there any shock absorbing forks that would be strong enough to handle the motor?

  2. #2
    Senior Member nwmtnbkr's Avatar
    Join Date
    Jul 2009
    Posts
    1,054
    Mentioned
    0 Post(s)
    Tagged
    0 Thread(s)
    Quote Originally Posted by bmt074 View Post
    So I am building a new electric bike. I am planning on getting a front-drive kit from Amped. The idea is that I am going to get a Townie comfort bike and then apply the kit to it. From what I understand Aluminum forks aren't the best for front-drive motors (I actually witnessed one get completely bent out of shape after hitting a fairly nasty bump).

    What replacement forks would people recommend for use with a front-drive motor? Are there any shock absorbing forks that would be strong enough to handle the motor?
    Make sure it's steel and use torque arms too. There's a member over at the Endless Sphere forums that has a photo in his signature of a bike rider's nose and face hitting his motorized front wheel when his fork broke. It's extremely painful to look at; you don't want that happening to you.

  3. #3
    Senior Member teamontherun's Avatar
    Join Date
    Dec 2009
    Location
    San Diego County, CA
    My Bikes
    2009 SE Draft (I know, I know)
    Posts
    196
    Mentioned
    0 Post(s)
    Tagged
    0 Thread(s)
    I second the steel and torque arms. You might want to look into getting a different bike rather than buying one and having to replace the fork.
    Only God Can Judge Me

  4. #4
    Senior Member
    Join Date
    Jul 2009
    Location
    Somerville, MA
    Posts
    208
    Mentioned
    0 Post(s)
    Tagged
    0 Thread(s)
    Thanks for the replies! I am going to make sure that the bike is suitable for the engine.

    Is this a non-issue with rear wheel motors? Now I am thinking of getting a new hybrid and converting my old 7.2fx. The 7.2fx is also made of aluminum - could it manage a motor on the rear wheel?

  5. #5
    Senior Member CowtownPeddler's Avatar
    Join Date
    Feb 2010
    Location
    Calgary
    My Bikes
    Old Norco frame in conversion process
    Posts
    111
    Mentioned
    0 Post(s)
    Tagged
    0 Thread(s)
    I can attest - my Norco seems to be all aluminum. I run a rear hub motor and have definitely not had a problem.

    I did limit the beastie to a max 30A draw and torqued the rear nuts down well. I did not install torque arms, and I carry the batteries in panniers off the back. I do imagine there is some stress on the farme, but so far no issues with it.

    BTW guys - I ordered 2 * CellLog 8 today.... 40Ah cells maybe tomorrow....

Posting Permissions

  • You may not post new threads
  • You may not post replies
  • You may not post attachments
  • You may not edit your posts
  •