New to Motorized Bike Community, have a slight problem

Discussion in 'General Questions' started by mrsrt8, Nov 20, 2013.

  1. mrsrt8

    mrsrt8 New Member

    Hello all, I recently purchased a 66cc kit from bikeberry.com, I have mounted it, and did the standard replacement of nuts and bolts. I bought a spring loaded chain tensioner off of Ebay, and it mounts on the "swingarm" ( I dont know the proper name, the horizontal bar that comes from the "dropout area"). Only problem is that when I pedal and then attempt to start the engine, the chain gets stuck inside the clutch cover, due to it having too much slack. I tried the tensioner that came with the kit, but I ended breaking two spokes so I said screw it. photo 1.jpg photo 2.jpg photo 3.jpg
     

  2. a.graham52

    a.graham52 Member

    by looking at those pics it looks like you can adjust taht tensioner for more tension. kind of like you would do with the "stock" tensioner. id try that first, put more tension on it so you have about 1/2" of play on the top chain and see what that does for you!
     
  3. jaguar

    jaguar Well-Known Member

    possibly the excessive angle of the engine has something to do with it (if the chain is catching on the engine casing at the bottom).
    you might try mounting it more level.
    make sure the rear sprocket is mounted to keep the chain in line with the countershaft sprocket. the rear sprocket is beveled so you can have it more "outward" or more "inward".
     
  4. crassius

    crassius Well-Known Member

    not sure, but I'm thinking that a spring-type tensioner should be tight with no play in the chain, as the play will come in thru the spring when needed
     
  5. tom-fishing

    tom-fishing Member

    Drill a hole next to the slot up high and mount the pivot bolt thru it. Leave the bolt loose enough that it can move when needed. That should cure your troubles.
     
  6. IbedaYank

    IbedaYank Member

    take a couple links out of the chain and adjust so there is some space between the coils in the spring as you have it now the spring is doing nothing


    rigid frames do not have swing arms you put the tensioner on a chainstay

    451px-Bicycle_Frame_Diagram-en.svg.png
     
  7. mrsrt8

    mrsrt8 New Member

     
  8. mrsrt8

    mrsrt8 New Member

    I dont understand
     
  9. a.graham52

    a.graham52 Member

    I still think u should loosen the pivot bolt and slide the tensioner up the slot untill u achieve proper tension. And then re tighten the pivot bolt. That is assuming u can tighten the pivot bolt and it will still pivot of course!
     
  10. IbedaYank

    IbedaYank Member

    use a ziptie to pull ends of chain togather... simple
     
  11. IbedaYank

    IbedaYank Member


    yeah give it more leverage so it can twist into the wheel... it is nothing more then a stock tensioner with a added bolt and spring and a chunk of barstock. It is WELL know that the mount can and has twisted into the wheel and destroyed it
     
  12. a.graham52

    a.graham52 Member

    I have yet to have my stock tensioner twist into the wheel.
     
  13. mrsrt8

    mrsrt8 New Member

    Problem is , you cant tighten the pivot bolt and have it pivot, and I will try the zip ties and get back on here. thanks again
     
  14. a.graham52

    a.graham52 Member

    Darn, they should have included a shoulder on that bolt like there is on the stock pulley.
     
  15. mrsrt8

    mrsrt8 New Member

    You can move up the pivot arm and hand tighten and it will stay, but once you move the bike, it falls down. I wish there was a way to make like slots instead of a whole infinite adjustments. If I could forge my own steel I would
     
  16. tom-fishing

    tom-fishing Member

    Picture worth thousand words

    100_0416.jpg
    Hope this helps you with your problem. Use a nyloc nut on your pivot bolt so it won't unscrew and fall off when you ride.
     
    mrsrt8 likes this.
  17. mrsrt8

    mrsrt8 New Member

    When I put the tie rod together, it doesnt pull enough to place the masterlink, I think I might need a real chain puller. Any Ideas?
     
  18. IbedaYank

    IbedaYank Member

    use what is called a halflink
    SBHL18-2.jpg
     
  19. turbobuick1

    turbobuick1 New Member


    You could try my tensioner out! I have sent a few to Fort Myers, you may have already bought one, lol IMG_0416.jpg
     
  20. butterbean

    butterbean Well-Known Member

    This is very simple. Loosen the bolts that hold the tensioner in place on the frame, as well as the bolt that holds the strap for the spring. Slide the tensioner closer to the rear wheel as close as it can go without having to push too hard. Tighten the bolts back up. Check the slack in the chain by moving the top part of your chain up and down with your finger. If you can see the plastic idler wheel moving up and down when you do this, then the spring is picking up the slack in the chain and you're good to go. Tighten all the bolts back down securely and you're done.
     
Loading...