Hub motor Kit

Discussion in 'Electric Bicycles' started by dougsr.874, Mar 9, 2015.

  1. dougsr.874

    dougsr.874 Active Member

    I bought a 36volt, 800 watt hub motor kit off of Amazon. Just got it installed today...on my initial trial run I was very disapointed to find that it seems the wheel or tire or something is out of's kinda like riding a bucking horse...bumping up & down...I set the rear of the bike on jacks and had my son hold the throttle open....from several feet away I sat down to see if I could see the problem....I couldn' all looks like its running true but the bucking is still there.....Is the the tire????? anyone had a similar problem please let me know & how to correct it....the kit is installed correctly as this is not the first one I've built.

  2. butre

    butre Well-Known Member

    I'd have to see it to be sure but it could be a hard spot in the tire or a warped rim
  3. wheelbender6

    wheelbender6 Well-Known Member

    Deflate and reinflate the tire a few times. If that doesn't help, take the wheel to a bike shop for trueing.
    Last edited: Mar 15, 2015
  4. Arty

    Arty Active Member

    I had a bit of a bucking problem with my bike as well, and found part of it to be a stiff link in one of the jackshaft chains.