Chain Tensioner Need help with chain tensioner

Discussion in 'Transmission / Drivetrain' started by ryansclzo, Aug 4, 2013.

  1. ryansclzo

    ryansclzo Member

    So this is my first build and I bought a spring loaded chain tensioner. The problem is that the part that sticks to the frame will not go tight enough, therefor making it go left or right when i release the clutch...


    Whats the easiest way to fix this? I read on here that you can put rubber or bent washers in between the mounting part.

    Can I use loctite Epoxy weld bonding to make it not turn?


  2. crassius

    crassius Well-Known Member

    I like to use an old handlebar - cut an inch or so off, then split that down the middle to make 2 'C' shaped sections - also, replace the 4.8 strength bolts with nicer 10.9 or 8.8.
  3. ryansclzo

    ryansclzo Member

    I went to take out the screws and one of them snapped in half? lol looks like another trip to the hardware store.... but the handlebar did cut nicely :). I will let you know how the tensioner holds up later
  4. Chance

    Chance New Member

    I stick a dial indicator on the sproket (cheap at Harbor Frieght) and adjust the sprocket within .010 in all directions. Then remove chain links accordingly and elliminate the tensioner all together. Rolls nicer and one less part to fail.
  5. Stoltzee

    Stoltzee Member

    Buy 6 inches of rubber heater hose. Comes in different sizes, and is plenty thick enough to use as a bushing, and doesn't slip.
  6. CarbonBikes

    CarbonBikes New Member

    The best way to make any tension-er work is to put the bump in a clamp and tighten it a little bit until it folds out about 3-5 mm.

    Clamp-style tension-ers only work when they actually clamp the metal. I tried rubber when mine was slipping on my first bike which didn't work at all. It actually made the problem worse.

    I had the same problem with my bike but I was going higher speeds (on my first bike) the tension-er slipped into the spokes and destroyed the wheel.
  7. crassius

    crassius Well-Known Member

    I use a piece of old handlebar - cut an inch or so, then split it into to "C" sections to put under the clamp.