Advertise on Bikeforums.net



User Tag List

Results 1 to 5 of 5

Thread: frozen? pedals

  1. #1
    Senior Member
    Join Date
    Mar 2005
    Location
    Athens, GA
    My Bikes
    Lemond Reno, Giant CFM 2, Lotus, Haro (for the trainer)
    Posts
    172
    Mentioned
    0 Post(s)
    Tagged
    0 Thread(s)

    frozen? pedals

    I've got a Giant CadexII mountain bike. It's old, but it's carbon.

    I am trying to replace the pedals that came with it with clipless pedals.

    Unfortunately, the pedals do not want to loosen.

    First, I wonder is it possible that I can accidentally apply enough pressure trying to loosen the pedals to do any damage, and secondly, is there anything designed to loosen pedals.

    I know there are lubricant like things that supposedly will loosen tight nuts, but I've never used them and I have no idea whether they might also dissolve the carbon fiber frame if I accidentaly got some on it.

    Thanks for any help anyone can offer.

  2. #2
    Senior Member
    Join Date
    Feb 2001
    Location
    England
    Posts
    12,073
    Mentioned
    2 Post(s)
    Tagged
    0 Thread(s)
    WD40 wont hurt a carbon frame and you should be able to apply it precisely to the crank threads.
    To remove a stuck pedal you need a lot of torque so use the longest wrench you can find or fit an extension. Bike shops usually have a special one for this purpose.
    I use carefully applied foot power thus:
    Put the bike in lowest gear and aply brakes.
    Point the relevant crank foward and up.
    Place the wrench on the pedal pointing rear and up.
    Place foot on end of wrench and take up the tension.
    Carefully apply more force until all your weight is on the wrench. Beware of the wrench slipping.
    To prevent sticking, smear grease over the threads.

  3. #3
    Senior Member
    Join Date
    Mar 2005
    Location
    Athens, GA
    My Bikes
    Lemond Reno, Giant CFM 2, Lotus, Haro (for the trainer)
    Posts
    172
    Mentioned
    0 Post(s)
    Tagged
    0 Thread(s)
    Thanks.

    I'm letting the WD 40 work, and then I'll be getting a bigger wrench so I'll have more leverage. The only wrench I have that fits is too short.

    I appreciate the advice.

  4. #4
    Fossil Lurch's Avatar
    Join Date
    Nov 2004
    Location
    Raleigh, NC
    My Bikes
    Fuji Club, Bianchi Bergamo, Fuji Suncrest
    Posts
    311
    Mentioned
    0 Post(s)
    Tagged
    0 Thread(s)
    Slip a length of steel pipe or tubing over the end of a short wrench to extend the lever arm. A cut out piece of old bike frame works well for this. If the inside diameter is a bit too small, flatten the pipe with a hammer or in a bench vise to get a better fit. It is possible to get too much leverage on a small wrench and cause a drastic failure of the tool.

  5. #5
    Senior Member
    Join Date
    Sep 2001
    Location
    Montreal
    My Bikes
    Peugeot Hybrid, Minelli Hybrid
    Posts
    6,521
    Mentioned
    0 Post(s)
    Tagged
    0 Thread(s)
    Pouring boiling water over the cranks, as you unscrew the pedals, will also help as the aluminum crank will expand more than the steel pedal shaft.

Posting Permissions

  • You may not post new threads
  • You may not post replies
  • You may not post attachments
  • You may not edit your posts
  •