Results 1 to 9 of 9
  1. #1
    mtbr member
    Reputation: motorman's Avatar
    Join Date
    May 2011
    Posts
    553

    Bottom bracket condom....

    After my first BB failed after only a few hundred miles due to crud working through the seals, I am trying this solution to increase winter / beach durability
    Waterproof grease & some nifty work with Nitto tape...lets see if it works





    Drink coffee....ride bikes....eat cake
    http://morayfatbike.blogspot.com

  2. #2
    mtbr member
    Reputation: wieczorek24's Avatar
    Join Date
    Dec 2010
    Posts
    81
    I would think that makes it as waterproof as a submarine. As long as the tape stays on there and doesn't unravel it looks watertight.
    I live in "bush" Alaska, in Galena on the Yukon River.

  3. #3
    How much does it weigh?
    Reputation: Borgschulze's Avatar
    Join Date
    Nov 2007
    Posts
    1,169
    Better seal up every tube on the bike... don't forget the BB shell has holes in it where the tubes join to it.

    The most common collection of water comes from the seat tube.

  4. #4
    Harmonius Wrench
    Reputation: Guitar Ted's Avatar
    Join Date
    Jan 2004
    Posts
    8,256
    In winter, if you keep your bike in a warm place, taking it out in the cold can create moisture in the bearing cavities, so it maybe isn't a 100% water tight.

    But I had thought something similar would be a good idea. Some folks use smaller road tubes or hybrid tubes to make a "condom" for their seat tube/seat post junctions to keep crud from getting down the seat tube.

    I thought perhaps one might be able to do something similar for the BB, but your idea looks good too.
    Riden' an Smilin'
    Guitar Ted

    Blog
    RidingGravel.com

  5. #5
    mtbr member
    Reputation: motorman's Avatar
    Join Date
    May 2011
    Posts
    553
    It it not really an issue of keeping just water out, mostly to stop the fine beach sand from getting into the bearing race, that has been the cause of failure on my last BB.
    30 miles on it so far & still looks good!
    The tape is amalgamating, and sets into one piece when wrapped correctly & the grease stops it from bonding the the rotating part of the BB spindle.
    I have similar arrangement on seatpost clamp, so nothing is getting in there either
    Also use 2 lizard skins on headset
    Drink coffee....ride bikes....eat cake
    http://morayfatbike.blogspot.com

  6. #6
    Black Sheep rising
    Reputation: utabintarbo's Avatar
    Join Date
    Jun 2007
    Posts
    917
    Heat-shrink tubing?
    Let the market decide!

    N42.58 W83.06

  7. #7
    mtbr member
    Reputation: motorman's Avatar
    Join Date
    May 2011
    Posts
    553
    No, not heat shrink, it is similar to this stuff ...
    Samco Stretch & Seal Tape from Merlin Motorsport
    Drink coffee....ride bikes....eat cake
    http://morayfatbike.blogspot.com

  8. #8
    Black Sheep rising
    Reputation: utabintarbo's Avatar
    Join Date
    Jun 2007
    Posts
    917
    Quote Originally Posted by motorman View Post
    No, not heat shrink, it is similar to this stuff ...
    Samco Stretch & Seal Tape from Merlin Motorsport
    Actually, it was a suggestion.
    Let the market decide!

    N42.58 W83.06

  9. #9
    mtbr member
    Reputation: motorman's Avatar
    Join Date
    May 2011
    Posts
    553
    Oooops sorry....thanks
    Drink coffee....ride bikes....eat cake
    http://morayfatbike.blogspot.com

Similar Threads

  1. Replacing a Shimano MTB HT II bottom bracket with a Shimano Road HT II bottom bracket
    By AndrwSwitch in forum Drivetrain - shifters, derailleurs, cranks
    Replies: 4
    Last Post: 04-17-2015, 11:58 AM
  2. Hole in bottom of frame on bottom bracket?
    By concrete sledge in forum General Discussion
    Replies: 4
    Last Post: 05-03-2007, 11:45 PM
  3. XTR bottom Bracket ?
    By ptfmb71 in forum Drivetrain - shifters, derailleurs, cranks
    Replies: 4
    Last Post: 08-06-2006, 08:25 PM
  4. Bottom bracket
    By beegblock in forum Beginner's Corner
    Replies: 2
    Last Post: 02-22-2005, 06:57 PM
  5. Bottom Bracket help
    By Kevin in forum Drivetrain - shifters, derailleurs, cranks
    Replies: 9
    Last Post: 06-28-2004, 07:36 PM

Members who have read this thread: 0

Posting Permissions

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

THE SITE

ABOUT MTBR

VISIT US AT

© Copyright 2018 VerticalScope Inc. All rights reserved.