Advertise on Bikeforums.net



User Tag List

Results 1 to 9 of 9
  1. #1
    Senior Member
    Join Date
    Apr 2007
    Posts
    185
    Mentioned
    0 Post(s)
    Tagged
    0 Thread(s)

    Convert road bike to fixed gear

    Waiting for my ebay cassette to arrive and thinking about going single speed on my trek road bike. do i need a tensioner? the lbs guy said i do but i am looking at these fixed gear conversion bikes and they don't have one. I also have a derailleur but the cassette won't come in for another week and that is the only part holding me up.

  2. #2
    Spelling Snob Hobartlemagne's Avatar
    Join Date
    Dec 2005
    Location
    Plano, Texas
    My Bikes
    Panasonic DX4000, Bianchi Pista
    Posts
    2,862
    Mentioned
    0 Post(s)
    Tagged
    0 Thread(s)
    Fixed gear bikes dont need tensioners. Some singlespeeds have them, but not all of them.

    The first rule of flats is You don't talk about flats!

  3. #3
    Senior Member Retro Grouch's Avatar
    Join Date
    Feb 2004
    Location
    St Peters, Missouri
    My Bikes
    Rans Rockst (Retro rocket) Rans Enduro Sport (Retro racket) Hase Kettweisel Tandem (redundent recumbent), Merin Bear Valley (The gopher).
    Posts
    26,068
    Mentioned
    6 Post(s)
    Tagged
    0 Thread(s)
    Any single speed or fixed gear bike has to have a way to adjust the chain tension.

    On a bike with a single speed freewheel this can be done with either horizontal frame dropouts or with a spring loaded chain tensioner that works like the arm on a derailleur.

    On a fixed gear you have to be able to put pressure on the pedals in either direction so a spring loaded tensioner arm won't work. If your bike frame has vertical dropouts options include using a rear hub that has an eccentric built into it or finding a fortuitous chainring and sprocket combination that keeps the chain snug.

  4. #4
    Your mom
    Join Date
    Aug 2006
    Posts
    2,541
    Mentioned
    0 Post(s)
    Tagged
    0 Thread(s)
    If it's a newer Trek, it has vertical dropouts, and cannot be single speed without a tensioner. Check out Sheldon:

    http://sheldonbrown.com/singlespeed.html

  5. #5
    Senior Member barba's Avatar
    Join Date
    Nov 2005
    Posts
    4,083
    Mentioned
    0 Post(s)
    Tagged
    0 Thread(s)
    You can't use a chain tensioner with a fixed gear, as RG notes.

    More information on your bike would be useful.

  6. #6
    Your mom
    Join Date
    Aug 2006
    Posts
    2,541
    Mentioned
    0 Post(s)
    Tagged
    0 Thread(s)
    Oh yeah, your header says fixed, but your post says SS. Which are you looking for?

    Either way, it will be work or $$.

    Fixed: new rear wheel.

    SS: cassette and spacers with one cog.

    If you like gears, just wait for the cassette.

  7. #7
    hello roadfix's Avatar
    Join Date
    May 2003
    Location
    Los Angeles
    My Bikes
    thank you for asking
    Posts
    18,501
    Mentioned
    0 Post(s)
    Tagged
    0 Thread(s)
    Just be patient and wait for your cassette. Do a SS conversion on a spare bike instead.

  8. #8
    cab horn
    Join Date
    Jun 2004
    Location
    Toronto
    My Bikes
    1987 Bianchi Campione
    Posts
    28,306
    Mentioned
    0 Post(s)
    Tagged
    0 Thread(s)
    1) You will need a tensioner with vertical dropouts
    2) Single speed kits with spacers and a cog are cheap
    Mes compaingnons cui j'amoie et cui j'aim,... Me di, chanson.

  9. #9
    hobby alchemist j-lip's Avatar
    Join Date
    Mar 2005
    Location
    Sunshine State
    Posts
    45
    Mentioned
    0 Post(s)
    Tagged
    0 Thread(s)
    This is risky, but if you have vertical dropouts and you get lucky and are really close to your desired chain tension, but not quite there, a file can be used on the axle or the frame. But, I'm talking about very small amount of filing. I was successful using this method on a single speed mountain bike of mine. It's an aluminum trek frame that I ride a lot with no problemos. Let me emphasize risky.

Posting Permissions

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