Cycling and bicycle discussion forums. 
   Click here to join our community Log in to access your Control Panel  


Go Back   > >

Mountain Biking Mountain biking is one of the fastest growing sports in the world. Check out this forum to discuss the latest tips, tricks, gear and equipment in the world of mountain biking.

User Tag List

Reply
 
Thread Tools Search this Thread
Old 09-23-04, 06:58 PM   #1
nepaMTBer
Senior Member
Thread Starter
 
nepaMTBer's Avatar
 
Join Date: Aug 2004
Bikes:
Posts: 146
Mentioned: 0 Post(s)
Tagged: 0 Thread(s)
Quoted: 0 Post(s)
On my second bike I need to replace the BB, but I have no idea what size type ect. i need. Ive tried getting it from the trek website but its not working. Its a 2004 trek 4900. Does anyone know?
nepaMTBer is offline   Reply With Quote
Old 09-23-04, 08:30 PM   #2
tFUnK
Senior Member
 
Join Date: Jun 2002
Location: Menlo Park, CA
Bikes: GT Forte Ti, Ridley XBow, Specialized Tricross Sport, Specialized Langster, Xootr Swift
Posts: 2,278
Mentioned: 0 Post(s)
Tagged: 0 Thread(s)
Quoted: 1 Post(s)
should probably ask the shop you got the bike from either that or take off the bb and take to shop for a replacement of the same size. if you're asking to try to buy a bb from the net, i think you can just measure it. should be 63mm or 72mm if i'm not mistaken those are the common sizes..
tFUnK is offline   Reply With Quote
Old 09-23-04, 08:45 PM   #3
Portis
Banned.
 
Join Date: Sep 2003
Location: Home alone
Bikes: Trek 4300 X 2. Trek 1000, Trek 6000
Posts: 6,019
Mentioned: 0 Post(s)
Tagged: 0 Thread(s)
Quoted: 0 Post(s)
Quote:
Originally Posted by nepaMTBer
On my second bike I need to replace the BB, but I have no idea what size type ect. i need. Ive tried getting it from the trek website but its not working. Its a 2004 trek 4900. Does anyone know?
You have the Bontrager sport crankset. You need a 113 mm square taper BB. Measure your bottom bracket shell with a simple metric ruler to tell the length. I think i have the same frame on my 4300 and it is 73 mm.
Portis is offline   Reply With Quote
Old 09-24-04, 08:11 AM   #4
a2psyklnut
NCAA - DUAL CHAMPIONS!
 
a2psyklnut's Avatar
 
Join Date: Mar 2000
Location: From Sarasota, FL sitting in front of a computer spewing random thoughts!
Bikes: Intense Uzzi SL, Masi Speciale, Trek 3700 Nashbar Single Speed, Old Cilo Road frame
Posts: 7,964
Mentioned: 0 Post(s)
Tagged: 0 Thread(s)
Quoted: 0 Post(s)
You'll need a couple of special tools too (if you don't already know, if you do then stop reading now)

An 8mm allen wrench
A crank puller
A bottom bracket tool
Some anti-sieze compound or a good lube.

Remember the non-drive side is reverse thread, so the righty tighty only works on the righty bikey. (meaning drive side of the bike)

Some people also will put a couple wraps of teflon tape, but I only use this if creaking is a problem. Usually the anti-sieze or grease eliminates any creaking in aluminum frame.

L8R
__________________
"Life is not a journey to the grave with the intention of arriving safely in a pretty and well preserved body, but rather to skid in broadside, thoroughly used up, totally worn out, and loudly proclaiming, "WOW, What a Ride!" - unknown
"Your Bike Sucks" - Sky Yaeger
a2psyklnut is offline   Reply With Quote
Old 09-24-04, 09:27 PM   #5
nepaMTBer
Senior Member
Thread Starter
 
nepaMTBer's Avatar
 
Join Date: Aug 2004
Bikes:
Posts: 146
Mentioned: 0 Post(s)
Tagged: 0 Thread(s)
Quoted: 0 Post(s)
Thanks for the help.
nepaMTBer is offline   Reply With Quote
Reply


Thread Tools Search this Thread
Search this Thread:

Advanced Search

Posting Rules
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is Off



All times are GMT -6. The time now is 11:24 AM.