Retrobike Forum Index

It is currently Sun Dec 04, 2016 1:15 am

* Login   * Register * Search  * FAQ



Post new topic Reply to topic  [ 13 posts ]  Go to page 1, 2  Next
Author Message
PostPosted: Tue Oct 09, 2012 11:28 am 
Dirt Disciple

Joined: Fri May 11, 2012 2:08 pm
Posts: 41
Whilst swapping over bottom brackets on my GT Team Zaskar I noticed the bottom bracket I was removing was cross threaded :(

tried carefully screwing in the new external bearing shimano cups but they won't screw in straight.

To save writing off the frame can I get away with using a press fit bottom bracket?


Top
 Profile  
 
 Post subject:
PostPosted: Tue Oct 09, 2012 12:34 pm 
Old School Grand Master
User avatar

Joined: Wed Apr 12, 2006 12:33 pm
Posts: 11105
Location: The Home Of Mountain Biking, And All Great Things.
Yes you can, there are a number of options.

I would take it to a decent shop and get them to chase the thread first though.

:)


Top
 Profile  
 
 Post subject:
PostPosted: Tue Oct 09, 2012 1:09 pm 
Dirt Disciple

Joined: Fri May 11, 2012 2:08 pm
Posts: 41
phew - thanks! hate to think I'd have to scrap the frame from a clumsy bb install


Top
 Profile  
 
 Post subject:
PostPosted: Wed Oct 10, 2012 11:01 am 
Gold Trader
Gold Trader
User avatar

Joined: Wed May 20, 2009 1:29 pm
Posts: 10798
Location: Manchester, UK
If it's still jiggered after chasing the threads out, BETD and other companies can 'helicoil' the BB shell too. You can even buy off the shelf thread saver kits, but I don't think they'd work in your application.


Top
 Profile  
 
 Post subject:
PostPosted: Wed Oct 10, 2012 11:03 am 
Old School Grand Master
User avatar

Joined: Thu Jul 19, 2007 7:18 pm
Posts: 3798
Location: Staffordshire
Google thread saver kit. Look at Images. Did it do it for you too?


Top
 Profile  
 
 Post subject:
PostPosted: Wed Oct 10, 2012 11:09 am 
Gold Trader
Gold Trader
User avatar

Joined: Wed May 20, 2009 1:29 pm
Posts: 10798
Location: Manchester, UK
Iwasgoodonce wrote:
Google thread saver kit. Look at Images. Did it do it for you too?


I tried it in BB sheel once with not great results, was more curious than anything else - to see if it worked!

BETD did my old Enduro frame - very good job but obviously had to strip & post frame, pay for job plus return postage. More than worth it for a decent frame though, it was better engineered than new.


Top
 Profile  
 
 Post subject:
PostPosted: Wed Oct 10, 2012 12:15 pm 
Old School Grand Master
User avatar

Joined: Wed Apr 12, 2006 12:33 pm
Posts: 11105
Location: The Home Of Mountain Biking, And All Great Things.
Is the frame otherwise immaculate?

Sending it away/etc. is going to cost the price of a replacement frame, or thereabouts.

:)


Top
 Profile  
 
 Post subject:
PostPosted: Thu Oct 11, 2012 10:14 am 
Retro Guru
User avatar

Joined: Mon Aug 15, 2011 8:21 pm
Posts: 275
Location: Paignton
If everything fails simply glue the BB cup using steel epoxy. Put liberal amount on the contact area, leave for two days... I did it on my old steel Dawes few years ago. It was un-moveable! 8)

If you ever want to take it off just use a heat gun for about 30 seconds, then you'll see/smell the epoxy being burned ;)


Top
 Profile  
 
 Post subject:
PostPosted: Thu Oct 11, 2012 9:09 pm 
Retro Guru

Joined: Sat Jul 04, 2009 4:41 pm
Posts: 1696
you can get a bottom bracket that is secured with a lock ring(the bb its self is threaded an the lockring is tightened up against the bb shell

i know hope made one there must be cheaper makes out there the one i m thinking of had square taper axle so only good for retro cranks

but as said above get the thread chased first


Top
 Profile  
 
 Post subject:
PostPosted: Thu Oct 11, 2012 9:26 pm 
Dirt Disciple

Joined: Fri Feb 03, 2012 5:57 pm
Posts: 42
Location: Bristol(ish)
Argos reamed and sleeved the BB in my Patriot frame which had knackered threads. With the steel insert it was better than new. A real good job. But they are local to me so saves faff and expense of posting.


Top
 Profile  
 
Display posts from previous:  Sort by  
Post new topic Reply to topic  [ 13 posts ]  Go to page 1, 2  Next

All times are UTC [ DST ]


Who is online

Users browsing this forum: Bing [Bot] and 8 guests


You cannot post new topics in this forum
You cannot reply to topics in this forum
You cannot edit your posts in this forum
You cannot delete your posts in this forum
You cannot post attachments in this forum

Search for:
Jump to:  

About Us

Follow Retrobike

Other cool stuff

All content © 2005-2015 Retrobike unless otherwise stated.
Cookies Policy.
bikedeals - the best bike deals in one place
FatCOGS - Fat Chance Owner's Group

Powered by phpBB® Forum Software © phpBB Group