Advertise on Bikeforums.net



User Tag List

Results 1 to 17 of 17
  1. #1
    Newbie
    Join Date
    Jul 2007
    Posts
    3
    Mentioned
    0 Post(s)
    Tagged
    0 Thread(s)

    Pedals Move On Their Own

    The pedals move on their own while not on the bike, just moving it by walking with the wheels rotating the pedals rotate as well. anyone know how to fix this?

  2. #2
    Pwnerer Wordbiker's Avatar
    Join Date
    Jun 2005
    Location
    Pagosa Springs, CO, USA
    My Bikes
    Road, MTB, Cruiser, Chopper, BMX
    Posts
    2,880
    Mentioned
    0 Post(s)
    Tagged
    0 Thread(s)
    Get an exorcist?


    It sounds like your freehub or freewheel is dragging. Try dripping some oil into it.
    Quote Originally Posted by ahsposo View Post
    Ski, bike and wish I was gay.

  3. #3
    I pedal what I ride
    Join Date
    Dec 2005
    Posts
    89
    Mentioned
    0 Post(s)
    Tagged
    0 Thread(s)
    its a a fixed gear bike ?

  4. #4
    cab horn
    Join Date
    Jun 2004
    Location
    Toronto
    My Bikes
    1987 Bianchi Campione
    Posts
    28,298
    Mentioned
    0 Post(s)
    Tagged
    0 Thread(s)
    Quote Originally Posted by mentat6059 View Post
    its a a fixed gear bike ?
    Haha +1.
    Mes compaingnons cui j'amoie et cui j'aim,... Me di, chanson.

  5. #5
    Grumbly Goat Bushman's Avatar
    Join Date
    Jul 2007
    My Bikes
    bicycles with round wheels
    Posts
    896
    Mentioned
    0 Post(s)
    Tagged
    0 Thread(s)
    Quote Originally Posted by mentat6059 View Post
    its a a fixed gear bike ?
    ROTFLMAO!!!
    You ride a bike, we GET IT, no need to rant about it or look down on others....its JUST A BIKE...get over yourselves.

  6. #6
    Senior Member
    Join Date
    Apr 2007
    Location
    Chili, NY
    My Bikes
    88 Fisher Gemini tandem, 92 Trek 970, 07 Nashbar Frame, 08 Gary Fisher Paragon
    Posts
    734
    Mentioned
    0 Post(s)
    Tagged
    0 Thread(s)
    Could be a broken spoke protector rubbing on the backside of the cassette or freewheel. I've also seen grass and weeds packed into these same areas that will cause the same thing. If it's not that, something in the freewheel or freehub is locked up.
    A Mess of old bikes...
    92 Trek 970
    08 Gary Fisher Paragon

  7. #7
    Senior Member
    Join Date
    Aug 2004
    Posts
    736
    Mentioned
    0 Post(s)
    Tagged
    0 Thread(s)
    Freewheel/freehub friction. Unless it's so severe that the top of the chain is sagging when freewheeling riding the bike (which is bad news since the chain can get pulled, jam into the freewheel and take the rear derailleur with it), it's not a big issue. Lube the ratchet mechanism, make sure that there is no dirt stuck between the freewheel/cassette and the hub + spokes, make sure that if a dork disk is installed it's not jamming.

  8. #8
    Senior Member
    Join Date
    Jul 2007
    Posts
    68
    Mentioned
    0 Post(s)
    Tagged
    0 Thread(s)
    Quote Originally Posted by Zouf View Post
    Freewheel/freehub friction. Unless it's so severe that the top of the chain is sagging when freewheeling riding the bike (which is bad news since the chain can get pulled, jam into the freewheel and take the rear derailleur with it), it's not a big issue. Lube the ratchet mechanism, make sure that there is no dirt stuck between the freewheel/cassette and the hub + spokes, make sure that if a dork disk is installed it's not jamming.

    but what if I don't know how to use the travel adjust Mr Lawyer?

  9. #9
    Senior Member
    Join Date
    May 2005
    Posts
    6,901
    Mentioned
    0 Post(s)
    Tagged
    0 Thread(s)
    I want a set of those. Prepetual motion machine in the making.

  10. #10
    Newbie
    Join Date
    Jul 2007
    Posts
    3
    Mentioned
    0 Post(s)
    Tagged
    0 Thread(s)
    haha, sorry i may have explained it a bit indirect. what i mean is when i am on the bike and the wheels are moving say going downhill or just moving from momentum from cycling the pedals continue to move on their own while the wheels rotate, also in one occurence the chains bundled up and jammed at the rear pretty bad.

  11. #11
    Senior Member gobot's Avatar
    Join Date
    Jul 2007
    Posts
    96
    Mentioned
    0 Post(s)
    Tagged
    0 Thread(s)
    Honestly, I'm a little scared now. I bought my bike really cheap on Craigslist-- what if it was 50$ because it is haunted?

  12. #12
    Videre non videri
    Join Date
    Sep 2004
    Location
    Gothenburg, Sweden
    My Bikes
    1 road bike (simple, light), 1 TT bike (could be more aero, could be lighter), 1 all-weather commuter and winter bike, 1 Monark 828E ergometer indoor bike
    Posts
    3,202
    Mentioned
    0 Post(s)
    Tagged
    0 Thread(s)
    I've seen one bike where the cassette was so close to the spokes that it rubbed and dragged the cassette along with the wheel rotation. The owner had to add some kind of spacer to get enough separation, IIRC.

  13. #13
    Newbie
    Join Date
    Jul 2007
    Posts
    3
    Mentioned
    0 Post(s)
    Tagged
    0 Thread(s)
    it has nothing to do with the supernatural. could this be the cause of the plastic disc on my wheel behind the gears breaking or falling off?

  14. #14
    Mechanic/Tourist
    Join Date
    Apr 2007
    Location
    Syracuse, NY
    My Bikes
    2008 Novara Randonee - love it. Would have more bikes if I had time to ride them all. Previous bikes: 1968 Motobecane Mirage, 1972 Moto Grand Jubilee (my fav), Jackson Rake 16, 1983 C'dale ST500.
    Posts
    4,553
    Mentioned
    2 Post(s)
    Tagged
    0 Thread(s)
    The behavior you describe is from friction at the freehub. It may be the freehub itself has a friction problem or it may simply be that your bearings are adjusted too tightly. The hub should have play in it when off the bike if you move the axle up and down (wheel vertical) and no play when mounted. Without the wheel mounted but with the chain disengaged the wheel should slowly and gently rock to a stop.

  15. #15
    Senior Member Steev's Avatar
    Join Date
    Jul 2005
    Location
    Backwoods of Ontario
    Posts
    2,104
    Mentioned
    0 Post(s)
    Tagged
    0 Thread(s)
    Quote Originally Posted by getaway24 View Post
    it has nothing to do with the supernatural. could this be the cause of the plastic disc on my wheel behind the gears breaking or falling off?
    The other way is possible. If any pieces of the disc (known as a "dork disc") are still there, it may be those pieces that are stopping the freewheeling action. The plastic ages and becomes brittle and then break up on their own.

  16. #16
    Senior Member
    Join Date
    Aug 2004
    Posts
    736
    Mentioned
    0 Post(s)
    Tagged
    0 Thread(s)
    Quote Originally Posted by cny-bikeman View Post
    The behavior you describe is from friction at the freehub. It may be the freehub itself has a friction problem or it may simply be that your bearings are adjusted too tightly. The hub should have play in it when off the bike if you move the axle up and down (wheel vertical) and no play when mounted. Without the wheel mounted but with the chain disengaged the wheel should slowly and gently rock to a stop.
    First part of response is correct (freehub friction), but in the rest you confuse freehub bearings with wheel bearings. The freewheel bearings are usually not readily adjustable, and the "play... when off the bike... with the chain disengaged the wheel should slowly and gently rock to a stop" refers to wheel hub bearings, not freehub, so does not impact the OP's issue.

  17. #17
    Mechanic/Tourist
    Join Date
    Apr 2007
    Location
    Syracuse, NY
    My Bikes
    2008 Novara Randonee - love it. Would have more bikes if I had time to ride them all. Previous bikes: 1968 Motobecane Mirage, 1972 Moto Grand Jubilee (my fav), Jackson Rake 16, 1983 C'dale ST500.
    Posts
    4,553
    Mentioned
    2 Post(s)
    Tagged
    0 Thread(s)
    Quote Originally Posted by Zouf View Post
    First part of response is correct (freehub friction), but in the rest you confuse freehub bearings with wheel bearings. The freewheel bearings are usually not readily adjustable, and the "play... when off the bike... with the chain disengaged the wheel should slowly and gently rock to a stop" refers to wheel hub bearings, not freehub, so does not impact the OP's issue.
    Guess I dashed that one off too fast, confused the issue. True, the hub bearings have no impact on the dragging freehub - could only be freehub bearings or something like a spoke protector or badly bent spoke.

Posting Permissions

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