Go Back  Bike Forums > Bike Forums > Bicycle Mechanics
Reload this Page >

‘88 Trek 800 mtb BB type?

Notices
Bicycle Mechanics Broken bottom bracket? Tacoed wheel? If you're having problems with your bicycle, or just need help fixing a flat, drop in here for the latest on bicycle mechanics & bicycle maintenance.

‘88 Trek 800 mtb BB type?

Old 04-11-20, 05:17 PM
  #1  
Javagonzo
Newbie
Thread Starter
 
Join Date: Apr 2020
Location: Oostburg, WI
Posts: 4

Bikes: '17 Raleigh Merit 2

Mentioned: 0 Post(s)
Tagged: 0 Thread(s)
Quoted: 0 Post(s)
Likes: 0
Liked 0 Times in 0 Posts
‘88 Trek 800 mtb BB type?

The BB on my ‘88 Trek 800 is toast. I know it’s a 68mm shell and my spindle is about 125mm. I purchased a sealed bearing but can’t get either ends to thread on. Can anyone out here tell me what style thread I should be using? Or suggest a replacement?
the shell threads are in good shape and I thoroughly cleaned and lightly greased them before attempting to thread on the new BB.

thanks in advance,
chris
Javagonzo is offline  
Old 04-11-20, 05:51 PM
  #2  
dsbrantjr
Senior Member
 
dsbrantjr's Avatar
 
Join Date: Sep 2010
Location: Roswell, GA
Posts: 7,545

Bikes: '93 Trek 750, '92 Schwinn Crisscross, '93 Mongoose Alta

Mentioned: 22 Post(s)
Tagged: 0 Thread(s)
Quoted: 1150 Post(s)
Liked 537 Times in 388 Posts
You should have a standard English thread, drive side left-hand threads, non-drive right hand. Is the bottom bracket English-threaded too? Does the old one go back in OK?.
dsbrantjr is offline  
Old 04-11-20, 06:05 PM
  #3  
HillRider
Senior Member
 
Join Date: Aug 2005
Location: Pittsburgh, PA
Posts: 32,253

Bikes: '''96 Litespeed Catalyst, '05 Litespeed Firenze, '06 Litespeed Tuscany, '12 Surly Pacer, All are 3x8,9 or 10. It is hilly around here!

Mentioned: 36 Post(s)
Tagged: 0 Thread(s)
Quoted: 1438 Post(s)
Likes: 0
Liked 259 Times in 208 Posts
Originally Posted by dsbrantjr View Post
You should have a standard English thread, drive side left-hand threads, non-drive right hand. Is the bottom bracket English-threaded too? Does the old one go back in OK?.
This. ^^ If you have the cups reversed then neither side will thread in.
HillRider is offline  
Likes For HillRider:
Old 04-11-20, 06:13 PM
  #4  
dsbrantjr
Senior Member
 
dsbrantjr's Avatar
 
Join Date: Sep 2010
Location: Roswell, GA
Posts: 7,545

Bikes: '93 Trek 750, '92 Schwinn Crisscross, '93 Mongoose Alta

Mentioned: 22 Post(s)
Tagged: 0 Thread(s)
Quoted: 1150 Post(s)
Liked 537 Times in 388 Posts
Originally Posted by HillRider View Post
This. ^^ If you have the cups reversed then neither side will thread in.
The cups are pretty clearly marked but the sides may look swapped depending upon your vantage point or if the bike is upside-down. Chain (drive) side is right side.
dsbrantjr is offline  
Old 04-11-20, 06:44 PM
  #5  
Javagonzo
Newbie
Thread Starter
 
Join Date: Apr 2020
Location: Oostburg, WI
Posts: 4

Bikes: '17 Raleigh Merit 2

Mentioned: 0 Post(s)
Tagged: 0 Thread(s)
Quoted: 0 Post(s)
Likes: 0
Liked 0 Times in 0 Posts
Originally Posted by HillRider View Post
This. ^^ If you have the cups reversed then neither side will thread in.
Good points, thanks. And yes, the originals thread are fine.

Last edited by Javagonzo; 04-12-20 at 10:15 AM.
Javagonzo is offline  
Old 04-11-20, 06:57 PM
  #6  
Bill Kapaun
Really Old Senior Member
 
Bill Kapaun's Avatar
 
Join Date: Feb 2007
Location: Mid Willamette Valley, Orygun
Posts: 11,906

Bikes: 87 RockHopper,2008 Specialized Globe. Both upgraded to 9 speeds.

Mentioned: 12 Post(s)
Tagged: 0 Thread(s)
Quoted: 1076 Post(s)
Liked 270 Times in 212 Posts
Attempting to use "alien" cups?
Per St. Sheldon
https://www.sheldonbrown.com/bbsize.html
Bill Kapaun is online now  

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


Thread Tools
Search this Thread

Contact Us - Archive - Advertising - Cookie Policy - Privacy Statement - Terms of Service - Do Not Sell My Personal Information -

Copyright © 2018 MH Sub I, LLC dba Internet Brands. All rights reserved. Use of this site indicates your consent to the Terms of Use.