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

Old roadbike with stripped one piece crank. Replace 28tpi with 24 tpi crank?

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.

Old roadbike with stripped one piece crank. Replace 28tpi with 24 tpi crank?

Old 10-03-10, 10:18 PM
  #1  
tempaznx
Newbie
Thread Starter
 
Join Date: Oct 2010
Posts: 1
Mentioned: 0 Post(s)
Tagged: 0 Thread(s)
Quoted: 0 Post(s)
Likes: 0
Liked 0 Times in 0 Posts
Old roadbike with stripped one piece crank. Replace 28tpi with 24 tpi crank?

Hi Bike forums!,

This is my first post on this marvelous website, and I need help with a roadbike I recently purchased. Its an old nameless roadbike and the pedal holes are completely stripped. I spent an entire afternoon figuring out how to remove the crank, and I found this nice website.

I wanted to purchase a new crank on ebay, but i realized its a 28 tpi, and those crank are hard to come by. Is it possible to replace the crank with a 24tpi, and get new bearings, cups, and everything else that belongs in the bottom bracket (while still being able to use my crank wheel), or am I stuck having to buy a 28tpi crank from a shady man on the corner?

Thanks,
Johnny

By the way, I'm very very new to bicycle and bicycle repair. This is my first project, and I'm hoping to turn this white rusted POS to a nice road bike. (: Forgive me if I butcher the names of bike parts.
tempaznx is offline  
Old 10-03-10, 10:29 PM
  #2  
Jeff Wills
Insane Bicycle Mechanic
 
Jeff Wills's Avatar
 
Join Date: Mar 2008
Location: other Vancouver
Posts: 9,561
Mentioned: 31 Post(s)
Tagged: 0 Thread(s)
Quoted: 684 Post(s)
Liked 332 Times in 221 Posts
Originally Posted by tempaznx View Post
(: Forgive me if I butcher the names of bike parts.
You've done a heck of a lot better than the usual newbie! Sheldon Brown's site, as usual, provides the answer: https://www.sheldonbrown.com/opc.html . You should be able to replace the crank with an old Schwinn crank and not have an issue or get a 24tpi crank and replace all of the bearings and cones and not have an issue.
__________________
Jeff Wills

Comcast nuked my web page. It will return soon..
Jeff Wills is offline  
Old 10-03-10, 10:42 PM
  #3  
Bezalel
Senior Member
 
Join Date: Mar 2010
Location: City of Brotherly Love
Posts: 1,561

Bikes: Raleigh Companion, Nashbar Touring, Novara DiVano, Trek FX 7.1, Giant Upland

Mentioned: 0 Post(s)
Tagged: 0 Thread(s)
Quoted: 19 Post(s)
Likes: 0
Liked 0 Times in 0 Posts
If you want to replace the crank with a 24TPI crank you will have to replace everything in the bottom bracket area. https://www.sheldonbrown.com/opc.html
Bezalel is offline  
Old 10-04-10, 12:26 AM
  #4  
fietsbob
Banned
 
Join Date: Jun 2010
Location: NW,Oregon Coast
Posts: 43,599

Bikes: 8

Mentioned: 197 Post(s)
Tagged: 0 Thread(s)
Quoted: 7607 Post(s)
Liked 1,322 Times in 832 Posts
One piece cranks can be altered with an adapter ring set to use conventional 3 piece cranksets..

BMX frames have that done frequently enough to have parts made to do that.
fietsbob is offline  
Related Topics
Thread
Thread Starter
Forum
Replies
Last Post
KurskKnyaz
Bicycle Mechanics
48
07-12-19 12:16 PM
jcl1988
Bicycle Mechanics
7
08-31-15 04:57 PM
technical2654
Bicycle Mechanics
3
08-20-14 07:09 AM
Spudd
Bicycle Mechanics
8
08-31-13 05:55 PM
chico1st
Bicycle Mechanics
9
03-18-10 07:06 AM

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 2021 MH Sub I, LLC dba Internet Brands. All rights reserved. Use of this site indicates your consent to the Terms of Use.