Advertise on Bikeforums.net



User Tag List

Results 1 to 5 of 5
  1. #1
    Newbie
    Join Date
    Jul 2011
    Location
    New York, NY
    My Bikes
    2011 Dawes SST AL
    Posts
    2
    Mentioned
    0 Post(s)
    Tagged
    0 Thread(s)

    Help With Riser Handlebar and Lever Sizing

    Hello everyone,

    I'm new to riding and recently bought a Dawes SST AL to use as a commuter bike. I decided to change the handlebars to Norco Axiom Freeride riser handlebars. I just bought some 24 mm Tektro RL720 levers online and I asked the seller if they would fit a 25.4 mm bar and he said they would. Anyway, the levers just arrived and they don't fit (too big). It looks like these bars need something smaller, like 22mm. Can someone advise me here on what levers to buy? Or is there a way to get these 24 mm levers to fit this bar?

    Thanks

  2. #2
    coprolite fietsbob's Avatar
    Join Date
    Jun 2010
    Location
    NW,Oregon Coast
    My Bikes
    7
    Posts
    39,847
    Mentioned
    25 Post(s)
    Tagged
    0 Thread(s)
    Road levers are to fit a 15/16 tube 23 something mm , , commonly 26mm center

    the other type in general is 7/8" with a 1" center clamp. 22.2/25.4mm

  3. #3
    Insane Bicycle Mechanic Jeff Wills's Avatar
    Join Date
    Mar 2008
    Location
    other Vancouver
    Posts
    6,716
    Mentioned
    15 Post(s)
    Tagged
    0 Thread(s)
    Tektro RL720 levers are "interrupter" levers, designed to fit in the middle of a cable run on drop handlebars. Using them as "stand-alone" levers on a straight handlebar can flex the brake cable in the incorrectly, leading to failure. (There was a posting some time ago where a rider had both cables break at the same time- fortunately when he was standing still.)

    You need brake levers for your flat handlebar and caliper brakes, such as Shimano BL-R550: http://harriscyclery.net/product/shi...r4859-qc49.htm or similar.

    You do realize your new handlebars will not fit the handlebar stem that you have on your bike now, do you not?
    Jeff Wills

    All my bikes.

  4. #4
    Newbie
    Join Date
    Jul 2011
    Location
    New York, NY
    My Bikes
    2011 Dawes SST AL
    Posts
    2
    Mentioned
    0 Post(s)
    Tagged
    0 Thread(s)
    Hi Jeff, thanks for the info. I managed to get the levers on using a shim. They seem to work very well so far. I took everything to my LBS and they put everything on for $25. Also, the handlebars fit the stem just fine. Thanks for assuming they wont, though!

  5. #5
    Insane Bicycle Mechanic Jeff Wills's Avatar
    Join Date
    Mar 2008
    Location
    other Vancouver
    Posts
    6,716
    Mentioned
    15 Post(s)
    Tagged
    0 Thread(s)
    Quote Originally Posted by qrec View Post
    Hi Jeff, thanks for the info. I managed to get the levers on using a shim. They seem to work very well so far. I took everything to my LBS and they put everything on for $25. Also, the handlebars fit the stem just fine. Thanks for assuming they wont, though!
    If you had "drop" handlebars originally, the diameter at the clamp should be 26.0mm. In general, "flat" handlebars are 25.4mm in diameter at that spot. That's 0.6mm discrepancy.
    (Specs are here: http://www.bikesdirect.com/products/...rb_x.htm#specs )

    I question how well the handlebars are clamped in the stem. It looks like a two-bolt design in the picture (the description is useless), so it could clamp on the handlebar... sort of. I've seen mismatched handlebars like this work loose and rotate because the clamp doesn't hold properly. Your shop might have installed the bars with a shim- perhaps it's good enough.

    Also- the brake levers will work fine, for now. Like I said, there have been failures of the cable with this kind of lever when it's used as a "stand-alone" lever.
    Jeff Wills

    All my bikes.

Posting Permissions

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