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


Go Back   > >

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.

User Tag List

Reply
 
Thread Tools Search this Thread
Old 08-29-04, 09:56 PM   #1
funbun
Doomsled
Thread Starter
 
funbun's Avatar
 
Join Date: Aug 2003
Location: Tuscaloosa, AL
Bikes: Trek 800
Posts: 661
Mentioned: 0 Post(s)
Tagged: 0 Thread(s)
Quoted: 0 Post(s)
BB Size

A couple of questions. I've got a Trek 800. What is the BB size of this thing? I have a frame maker that will build a recumbent trike with a 26 inch rear wheel. I want to transfer most of my components from my mountain bike to the new trike fo save cash.

How do I figure out the BB size?

My rear wheel is only 130mm spacing (6/7 sprocket cassette). The new framr will be 135mm(8/9 sprocket cassette) I will have to get a new rear wheel. Will my current crank set work with a 135mm? Particularly chain size?

thanks
funbun is offline   Reply With Quote
Old 08-29-04, 11:57 PM   #2
supcom
You need a new bike
 
supcom's Avatar
 
Join Date: Aug 2002
Bikes:
Posts: 5,433
Mentioned: 0 Post(s)
Tagged: 0 Thread(s)
Quoted: 0 Post(s)
To find out the BB size, remove the crankarms and measure the width of the BB spindle. A dial caliper is the best tool for this.

You do not neccessarily need a new wheel. You can use spacers to widen the width of the wheel. If you use a quick release, you will also need a longer axle.

Whether the crankset will work depends on the chainline of the new frame. This is dependant on the BB spindle length on the drive side and the position of the chainrings relative to the end of the spindle. This is something you need to discuss with your framebuilder.
supcom 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 07:08 AM.