Truing back tire

Discussion in 'Frame Mounted Engines' started by Ryno, May 13, 2011.

  1. Ryno

    Ryno Member

    I attached the Drive Chain Sprocket to the back wheel and the whole wheel is tilted to the left. Does this mean that the bolts are too tight and tugging on the spokes?

    How can I get this wheel true? (It's REALLY crooked, it's touching the bar on the left side)
     

  2. Al.Fisherman

    Al.Fisherman Active Member

  3. Ryno

    Ryno Member

    I read that in this situation, your'e supposed to true the wheel by means of tightening the bolts on the Sprocket, not the spokes.
     
  4. srdavo

    srdavo Active Member

    I've never seen a wheel made untrue by attaching a sprocket.

    Like Ron says... put the wheel in the bike centered between the frame stays.
    then tighten the axle bolts.
    Just make sure the wheel does not move around while you are tightening the axle nuts. Sometimes it's helpful to have an extra pair of hands to hold the wheel in place.

    Does the wheel roll true & straight?
     
  5. Ryno

    Ryno Member

    I bet that was the problem. I was doing it all myself after all... I'll go back to the shop tomorrow and try re-attaching the wheel completely.
     
  6. Ryno

    Ryno Member

    And another semi related question... How tight do those bolts have to be? I'm worried about pulling on the spokes too much
     
  7. srdavo

    srdavo Active Member

    Huh???

    start over.... take the wheel off the bike

    hold the axle on both sides.... spin the wheel & watch

    does it roll straight?

    Is the sprocket aligned with the wheel?



    can you post some pics of your wheel & sprocket??
     
  8. Ryno

    Ryno Member

    I will post those tomorrow. My bike is in my bike shop and I'm home now
     
  9. Al.Fisherman

    Al.Fisherman Active Member

    If you are asking about the sprocket on the left side with the rag joint...10 foot pounds. I do it in inch pounds .. 120 inch pounds. The bolts are metric 8.8, I trash the nuts and install locking nuts (6mm x 1.00). Once I get them almost tighten, I remove one at a time and install with shorter bolts then add the lock nuts.
     
    Last edited: May 13, 2011
  10. olow

    olow Member

    i do believe you ar talking the sprocket tighten all bolts so ur just snug now mark the wheel with a marker and star thighten each one no more the one complete turn of the wrench do this to each one and when done start again and again till sproket is good and tight i usually use my thumb as an indicator 4 psi.
     
  11. Ryno

    Ryno Member

    Thanks for the help people.

    Srdavo was right, I just had to be more careful while attaching the wheel. The allignment changed when I added the sprocket so I had to attach it a little differently.
     
  12. Al.Fisherman

    Al.Fisherman Active Member

    Another thing I didn't mention, probably not necessary but I do it. On a rag joint there are metal shims that go on the inside of the spokes. I start out tightening the center hole of all three, then move on to the (right or left) then the remaining hole. I do this sequence till I attain the 120 inch pounds of all bolts.
     
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