frame angle matching engine

Discussion in 'Frame Mounted Engines' started by jaguar, Nov 28, 2010.

  1. jaguar

    jaguar Well-Known Member

    I am getting ready to buy the engine kit. I read that the bicycle frame needs to be close to 70 or 75 degrees to match the angle of the engine mounts. So I just bought a bicycle that's close to that spec. Most bicycles are around 60 or 65 degrees. The engine mounts only touch the frame at their top edges in that case.
    Mounting the engine on a 60 degree frame looks like it may cause the mount to slowly wear down the frame where it touches due to vibration.
    Do you believe that to be true?

  2. hurricane

    hurricane Member

    with enough trial and error work and design, just about any bike frame is capable of holding a motor of some sort or another.If your frame is too difficult to frame mount, go with a rear rack mount,or pusher trailer.
  3. jaguar

    jaguar Well-Known Member

    frame wear

    Of course you can stuff the engine in there but will the mounts edge dig through the metal of the frame when the angle isn't close to the mounts angle? That is my question.
  4. AussieSteve

    AussieSteve Active Member

    Best method is to ensure that the rear mount is square to the seat tube, then fit a 'U' clamp style front mount, bent to suit the frame. (Sick Bike Parts sell universal mounts, in two sizes I think.)
  5. wbuttry

    wbuttry Member

    it can but very unlikely
  6. Al.Fisherman

    Al.Fisherman Active Member

    No not at all but I'll almost guarantee that the mounts/studs/break or strip threads. Too many stories about that and I'd attribute it to improper mounting. Mounting/
  7. motorpsycho

    motorpsycho Active Member

    put strips of rubber between the frame and the mounts.