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

Go Back   > >

Folding Bikes Discuss the unique features and issues of folding bikes. Also a great place to learn what folding bike will work best for your needs.

User Tag List

Thread Tools Search this Thread
Old 09-27-05, 07:47 PM   #1
Senior Member
Thread Starter
Join Date: Sep 2004
Posts: 96
Mentioned: 0 Post(s)
Tagged: 0 Thread(s)
Quoted: 0 Post(s)
press on BB adapter?

I got an old TOMOS folder for $20 and I wanted to strip it down and make it a fixie. it has this weird press on BB set up with cottered cranks (not a fat one like on a BMX but small like on a road bike only not threaded). I would really like to put a new BB in this, but I'm not sure where I can find a new BB or an adapter. I know they make adapters for BMX bikes, but the ones I have seen are WAY to fat (diameter).

Anyone have any advice?
geekpunk is offline   Reply With Quote
Old 09-27-05, 11:52 PM   #2
clayface's Avatar
Join Date: Apr 2004
Posts: 369
Mentioned: 0 Post(s)
Tagged: 0 Thread(s)
Quoted: 0 Post(s)
The same happened to me with my old Victoria folder. The BB was of the Thomson type (preseed races into the shell and adjusting cones) that restricted me to use cottered cranks. As you say, the existing BMX adapters didn't work because the diameter of this BB was way too smaller.
So I took the races/cups off the shell and went to a lathe-shop. They built a pair of pressed on adapters with the outer diameter of the races and the inner threading of an Italian BB (the width of the shell is 69.8 mm so I chose this pattern). Now the old thing is working on a Campagnolo BB flawlessly.

clayface is offline   Reply With Quote

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 02:55 AM.

We are a participant in the Amazon Services LLC Associates Program, an affiliate advertising program designed to provide a means for us to earn fees by linking to and affiliated sites.
  • Ask a Question
    get answers from real people!
Click to start entering your question.