Cycling Equipment · Public discussion

rear derailer problem

Started by lemur · · Last activity · 5 posts · 750 views

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Cycling Equipment
Published
10 June 2007
Last activity
11 June 2007
Original author
lemur
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5
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  1. I cant coast on a 2nd hand bike I aquired. I need to constantly pedal
    because the rear sprocket does not freely rotate. What should I take a
    look at first.

    Thanks
    Rob

  2. Is it suposed to be a fixed gear? If so it's normal that is what a fixed
    gear is. If it is not then the freewheel mechanism must be frozen from
    corrosion. In that case it's probably best to replace the freewheel and
    chain.

    "lemur" <[email hidden]> wrote in message
    news:[email hidden]...

    Quoted message said:

    I cant coast on a 2nd hand bike I aquired. I need to constantly pedal
    because the rear sprocket does not freely rotate. What should I take a
    look at first.

    Thanks
    Rob

  3. Ops sorry didn't see the title. If it has a rear derailleur it's clearly
    not a fixed gear. It is most likely the free wheel. If your bike has a
    freewheel I'd replace it with the chain. If it is a cassette system I'd see
    if it is possible to overhaul and lub the frozen freehub.

    "Steven S" <loach_lover[remove spam tag]@hotmail.com> wrote in message
    news:[email hidden]...

    Quoted message said:

    Is it suposed to be a fixed gear? If so it's normal that is what a fixed
    gear is. If it is not then the freewheel mechanism must be frozen from
    corrosion. In that case it's probably best to replace the freewheel and
    chain.

    "lemur" <[email hidden]> wrote in message
    news:[email hidden]...

    Quoted message said:

    I cant coast on a 2nd hand bike I aquired. I need to constantly pedal
    because the rear sprocket does not freely rotate. What should I take a
    look at first.

    Thanks
    Rob

  4. On Jun 10, 10:18 am, "Steven S" <loach_lover[remove spam

    [email protected] said:

    Ops sorry didn't see the title. If it has a rear derailleur it's clearly
    not a fixed gear. It is most likely the free wheel. If your bike has a
    freewheel I'd replace it with the chain. If it is a cassette system I'd see
    if it is possible to overhaul and lub the frozen freehub.

    "Steven S" <loach_lover[remove spam tag]@hotmail.com> wrote in messagenews:[email hidden]...

    Quoted message said:

    Is it suposed to be a fixed gear? If so it's normal that is what a fixed
    gear is. If it is not then the freewheel mechanism must be frozen from
    corrosion. In that case it's probably best to replace the freewheel and
    chain.

    Quoted message said:

    "lemur" <[email hidden]> wrote in message
    news:[email hidden]...

    Quoted message said:

    I cant coast on a 2nd hand bike I aquired. I need to constantly pedal
    because the rear sprocket does not freely rotate. What should I take a
    look at first.

    Quoted message said:
    Quoted message said:

    Thanks
    Rob- Hide quoted text -

    - Show quoted text -

    clean chain, lube the deray pulley wheels.
    take the rear wheel off. does the cluster rotate? whats it sound like?
    zero? nooooo click click click? doens't rotate? try PCBlaster with a
    red tube comes with the can in behind the big cluster gear and thru
    the front side at ether side of the metal ring with two holes in it.
    spray it good then work the cluster back and forth. if it comes loose,
    let it sit in the hot sun for 2 days then pour trans oil into both
    sides, working the cluster.
    then have the LBS pull the old cluster off and sell you a new one.
    rebuilding is not worth the expense or time as the cluster goes with
    the chain. so yuo probabbbly need a new chain. get a sram link with it
    for chain cleaning. use paperclips.
    while you're there take a string from the CR's back to the cluster and
    pulleys to see if everything lines up.

  5. lemur said:

    I cant coast on a 2nd hand bike I aquired. I need to constantly pedal
    because the rear sprocket does not freely rotate. What should I take a
    look at first.

    Thanks
    Rob

    Hi Rob.

    It is not your derailleur.

    I sounds as if the internal mechanism of the freehub or freewheel has
    gummed up and the spring loaded pawls inside are not releasing. Can
    you back pedal the pedals when off the bike?

    You might try taking the wheel off the bike, laying it over a bucket,
    or cut down gallon jug, and putting some light oil where the freehub
    or freewheel rotates when you turn it counter-clockwise. give the oil
    a chance to soak in before remounting the rear wheel. That should cure
    the problem.

    Cheers from Peter

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