Jackshaft Jackshaft chains rubbing

Discussion in 'Transmission / Drivetrain' started by Charles Laypool, Feb 21, 2016.

  1. I bought myself a jackshaft kit and installed it had no issues it works except the chains on the right hand side rubbing when i shift past 3rd gear and as you could imagine caused some serious s***. I have a new chain but i fear its gunna snap this one to. Did i do something wrong or forget something like these black plastic peices or is this what im stuck with?
     

  2. Pablo

    Pablo Motored Bikes Sponsor

    What kit do you have? Properly tensioned chains with our kit should not touch.
     
  3. Iv got a sbp kit 3 weeks ago. Its only when i shift past 3rd so i just got a 7 speed hub and im using a 8 tooth in place of the right side 10 tooth
    1st=5 mph 7th=38 mph
     
  4. Pablo

    Pablo Motored Bikes Sponsor

    8 tooth? It will get chewed up fast (is it hardened?) and hard on the chain. Is that chain really tight? And your bike chain, did you remove some links and tighten it up?
     
  5. Hardened=yes
    hard on chain=possibly no stress noticed yet (i ride in mountain bike trails on cape cod. ma. So im very abusive (time will tell)
    Chain=not tight but not loose

    When it had the derailer ya i shortened it but now i got 7 speed internal gear hub so i just silde my tire back untill chains tight enough
     
  6. Pablo

    Pablo Motored Bikes Sponsor

    Jackshaft chain should be pretty darn tight. I'm guessing your bike geometry is adding to the problem. Please take several pictures, sharp, close up and some showing the best views of the chains, chainrings and assembly and send them to pablo AT(@) sickbikeparts.com. Thanks.
     
    Timbone likes this.
  7. Itss alll good my friend the sbp kit did what i wanted plus some. all i need is those tensioners for my engine chain and jack shaft chain
     
    Timbone likes this.
  8. Pablo

    Pablo Motored Bikes Sponsor

    OK, if you want you can add a small washer next to each spacer nut, it shouldn't take much. Thanks!!!
     
  9. Ghost0

    Ghost0 New Member

    I would check the installation of the chainrings to the freewheel. It is the most common mistake people make and is usually the cause of the chains being too close together and touching.
     
  10. I used ALL parts included its not rocket science if ur in 1st with a derailer cassette setup everytime you shift up a gear the chain moves toward the outter sprocket so in 4-5-6-7-8 gear the chain touches the other chain and im not putting more washers in between those sprockets because the place in which the sprockets seat on has limited space and i dont want my inner sprocket off that 1456690491468-23699438.jpg 1456690547609-83593974.jpg 14566905839291304025260.jpg 1456690610929192429809.jpg 1456690686753781479843.jpg 1456690491468-23699438.jpg 1456690547609-83593974.jpg 14566905839291304025260.jpg 1456690610929192429809.jpg 1456690686753781479843.jpg 1456690491468-23699438.jpg 1456690547609-83593974.jpg 14566905839291304025260.jpg 1456690610929192429809.jpg 1456690686753781479843.jpg 1456690491468-23699438.jpg 1456690547609-83593974.jpg 14566905839291304025260.jpg 1456690610929192429809.jpg 1456690686753781479843.jpg
     
  11. Pablo

    Pablo Motored Bikes Sponsor

    Ghost0 is correct. Your FW is on the incorrect side.
     
  12. Pablo

    Pablo Motored Bikes Sponsor

  13. Ooooo u mean the outter sprocket...
    When i put on the 7 speed hub i had put red loc tite on 17t (alot) when i put on shaft so i cant move it off without heat and a hammer so i had to flip js sprocket to help line up with 8 tooth...i should have mentioned that
     
  14. Pablo

    Pablo Motored Bikes Sponsor

    Ouch. Well heat will be your friend with any Loctite. Clean it all up, make sure there are no burrs and properly reassemble.
     
  15. Thanks for the tips but as of now im good i like a 7 speed hub more then a cassette anyways feels much smoother
     
  16. Fabian

    Fabian Well-Known Member

    Scroll to 6 minutes on the video to solve your chain interference issues.

     
  17. Fabian

    Fabian Well-Known Member

    I have found that the SickBikeParts right hand side chain tensioner is absolutely essential for good reliability, and the left hand side chain tensioner significantly reduces primary chain vibration.



     
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