Advertise on Bikeforums.net



User Tag List

Results 1 to 9 of 9
  1. #1
    Junior Member
    Join Date
    Jun 2010
    Posts
    6
    Mentioned
    0 Post(s)
    Tagged
    0 Thread(s)

    bottom bracket height

    So I know there have been other bottom bracket threads. I'm not here to discuss which is better, high or low etc. Instead, I'm looking for bikes with high bottom brackets. I used to have a 1994 trek 7600. The bottom bracket height on that bike was 12.2 inches, and it was a road/hybrid bike! This is more than an inch higher than any other bike I've been able to find. Anyways, does anyone know any of the following?

    Where to find an old trek 7600 (or rare bikes in general) ?
    Are there any other road/hybrid bikes that have such a high bb?
    How hard/expensive would it be to modify a steel frame to raise the bb?
    How expensive is a low end custom frame?


    I've scoured the internet looking for hints but I can't find any. Any help or advice would be greatly appreciated.

    Thanks!

  2. #2
    Senior Member colombo357's Avatar
    Join Date
    Oct 2007
    Posts
    1,986
    Mentioned
    0 Post(s)
    Tagged
    0 Thread(s)
    Sorry I can't answer your question, but can I ask why you want the high BB?
    "I just googled triple crank set and i see what your saying. this bike has 9 of those "cranksets".
    "They are showing [the TDF of Versus] at 5 different times in the day. It doesn't say which one is the live one."

  3. #3
    Senior Member Retro Grouch's Avatar
    Join Date
    Feb 2004
    Location
    St Peters, Missouri
    My Bikes
    Rans Enduro Sport, Hase Kettweisel Tandem, Merin Bear Valley beater bike
    Posts
    23,847
    Mentioned
    0 Post(s)
    Tagged
    0 Thread(s)
    I'm thinking that "cyclecross" bikes might have higher bottom brackets.

  4. #4
    Junior Member
    Join Date
    Jun 2010
    Posts
    6
    Mentioned
    0 Post(s)
    Tagged
    0 Thread(s)
    No other reason than I'm used to a high bottom bracket. I rode my old trek 7600 every day for the last four years. I guess I got used to being able to lean deep into the corners and pedal through them. On all of the new bikes I've tried I'm getting pedal strike.

    Only after hours of research am I realizing how rare 12" bb height is. Maybe I should give up and buy a "normal" bike?

  5. #5
    Senior Member
    Join Date
    Jun 2004
    Location
    Northern Nevada
    Posts
    3,748
    Mentioned
    0 Post(s)
    Tagged
    0 Thread(s)
    Grant Petersen at Rivendell (www.rivbike.com) is a fan of high BBs, I think. At least the one on my Atlantis is highter than on my other bikes (though to be honest I never thought of it, and never noticed until I ran out and measured a minute ago). You might check what he's offering in his off-the-rack bikes.

  6. #6
    Junior Member
    Join Date
    Jun 2010
    Posts
    6
    Mentioned
    0 Post(s)
    Tagged
    0 Thread(s)
    hmmm.... those are a bit pricey. So far the closest I've found is the kona smoke. It has a listed BB height of 12 inches. Though, thats probably partly due to the 47c tires. If I put on 37c tires I think the height would drop to 11.6 inches. Still more than half an inch lower than my old bike.

    The best I can figure is the old bike had 12.2 inch (310mm) bb height, with 38c tires. this translates to roughly a 35 to 40 mm bbdrop.

    I've also read that some fixies have higher bbs because the pedals have to keep turning all the time. Is it typically possible to convert fixies to multi-gear bikes? Do the frames allow room for geared tires and cranks?

    Thanks again for all the patience and suggestions!

  7. #7
    Que CERA, CERA jefferee's Avatar
    Join Date
    Feb 2008
    Location
    Kitchener, ON
    Posts
    873
    Mentioned
    0 Post(s)
    Tagged
    0 Thread(s)
    Cyclocross bikes generally have higher BBs.

    What kind of pedals are you using? Platforms, being wider, are more prone to pedal strike than clipless.
    Quote Originally Posted by MajorMantra View Post
    Cycling (taken to the typical roadie extreme) causes you to cough up your own soul as every fibre of your worthless being sings in choral agony. Once you embrace the pain everything is dandy.

  8. #8
    Junior Member
    Join Date
    Jun 2010
    Posts
    6
    Mentioned
    0 Post(s)
    Tagged
    0 Thread(s)
    All the bikes tested have been platforms.

  9. #9
    rebmeM roineS JanMM's Avatar
    Join Date
    Jan 2006
    Location
    Indiana
    My Bikes
    RANS V3, RANS V-Rex, RANS Screamer
    Posts
    11,626
    Mentioned
    2 Post(s)
    Tagged
    0 Thread(s)
    The bottom brackets on my RANS recumbents are 25" and 26". Not much chance of a pedal striking the ground on a turn.
    RANS V3 (steel), RANS V-Rex, RANS Screamer

Posting Permissions

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