Retrobike Forum Index

It is currently Sun Dec 04, 2016 5:05 am

* Login   * Register * Search  * FAQ



Post new topic Reply to topic  [ 22 posts ]  Go to page 1, 2, 3  Next
Author Message
PostPosted: Sun Oct 20, 2013 5:12 pm 
Dirt Disciple
User avatar

Joined: Sat Jun 30, 2012 3:18 pm
Posts: 98
Location: alfreton
Thought i would spend some time today swapping over my Dura ace 7402 groupset on to a Recent TVT carbone purchase and was doing well until i found out the b/b is to small and the 27.2 seat post is to big.Would anyone oblige and inform me what size they need to be,thanks.


Top
 Profile  
 
PostPosted: Sun Oct 20, 2013 6:00 pm 
rBoTM Winner
rBoTM Winner
User avatar

Joined: Sat Apr 14, 2012 12:03 am
Posts: 395
Location: Newcastle upon Tyne
casper2788 wrote:
Thought i would spend some time today swapping over my Dura ace 7402 groupset on to a Recent TVT carbone purchase and was doing well until i found out the b/b is to small and the 27.2 seat post is to big.Would anyone oblige and inform me what size they need to be,thanks.


It's several years since I worked on a TVT but if memory serves me well, seatpin size is same as Vitus/Alan, so may be 25.0mm

Which bit of the BB is too small. I recall the BB being British threaded but just can't remember exactly. What is the width of the shell you have, 68 or 70mm?

Neil


Top
 Profile  
 
PostPosted: Sun Oct 20, 2013 6:02 pm 
Dirt Disciple
User avatar

Joined: Sat Jun 30, 2012 3:18 pm
Posts: 98
Location: alfreton
originalshinkicker wrote:
casper2788 wrote:
Thought i would spend some time today swapping over my Dura ace 7402 groupset on to a Recent TVT carbone purchase and was doing well until i found out the b/b is to small and the 27.2 seat post is to big.Would anyone oblige and inform me what size they need to be,thanks.


It's several years since I worked on a TVT but if memory serves me well, seatpin size is same as Vitus/Alan, so may be 25.0mm

Which bit of the BB is too small. I recall the BB being British threaded but just can't remember exactly. What is the width of the shell you have, 68 or 70mm?

Neil

must be 70mm as the cups just slide in and out,suprised the Dura ace 7400 b/b didn't fit.


Top
 Profile  
 
PostPosted: Sun Oct 20, 2013 6:29 pm 
Dirt Disciple
User avatar

Joined: Sat Jun 30, 2012 3:18 pm
Posts: 98
Location: alfreton
Looks like i'm after some bits then.Anyone in possesion of a 25mm Dura ace seat post and i'd go for any 70mm,110mm axle shimano BB.


Top
 Profile  
 
PostPosted: Sun Oct 20, 2013 8:16 pm 
Retro Guru
User avatar

Joined: Sun Jul 25, 2010 12:22 pm
Posts: 1994
Location: North Ayrshire
i bought one of these frames in 1988 and the post was 25.0mm and the bb was british thread. how weird your cups slide in. if memory serves me correctly, your frame must have italian bb threads.


Top
 Profile  
 
PostPosted: Sun Oct 20, 2013 8:21 pm 
Dirt Disciple
User avatar

Joined: Sat Jun 30, 2012 3:18 pm
Posts: 98
Location: alfreton
rusty bodie wrote:
i bought one of these frames in 1988 and the post was 25.0mm and the bb was british thread. how weird your cups slide in. if memory serves me correctly, your frame must have italian bb threads.

The one i have taken out from my other frame which is an SLX is a dura ace 7400 1,37 x 24t axle 110mm even if italian thread on the TVT why would the cups slide in and out.


Top
 Profile  
 
PostPosted: Sun Oct 20, 2013 8:51 pm 
Retro Guru

Joined: Tue Oct 16, 2012 4:16 pm
Posts: 1568
Location: NOTTINGHAM
Just taken ownership of a TVT - seatpost measured at 25.0 (not looking forward to paying for a seatpost - have you seen some of the prices!). Mine's a 68mm BB shell and just installed an english BB with no issue - sounds like Italian threading was also an option - how are the threads on your frame? Feel nice and sharp? You can get a Shimano UN55 Italian BB for £20 from the Cycle Clinic if that helps?

If you wouldn't mind & when you have the time, could you post details about the forks & headset you've got (mine came as frame only) so I can suss out what I need to be looking for - 1" carbon forks seem to be few & far between and then there's the headset to suss - your bike might just help me with some questions I need answering.

Cheers


Top
 Profile  
 
PostPosted: Sun Oct 20, 2013 9:37 pm 
Dirt Disciple
User avatar

Joined: Sat Jun 30, 2012 3:18 pm
Posts: 98
Location: alfreton
what would be the difference with the italian thread compared to the english thread as regards fitting.Not familiar with the italian thread.


Top
 Profile  
 
PostPosted: Sun Oct 20, 2013 9:51 pm 
Retro Guru

Joined: Tue Oct 16, 2012 4:16 pm
Posts: 1568
Location: NOTTINGHAM
The cups on Italian have a slightly larger outside diameter and has right hand threads on both sides.


Top
 Profile  
 
PostPosted: Sun Oct 20, 2013 9:59 pm 
Dirt Disciple
User avatar

Joined: Sat Jun 30, 2012 3:18 pm
Posts: 98
Location: alfreton
FINNEY1973 wrote:
The cups on Italian have a slightly larger outside diameter and has right hand threads on both sides.

That would explain why the cups slide in then,thanks.Looks like the builds gonna take a little longer slowly but surely but will look super when done.


Top
 Profile  
 
Display posts from previous:  Sort by  
Post new topic Reply to topic  [ 22 posts ]  Go to page 1, 2, 3  Next

All times are UTC [ DST ]


Who is online

Users browsing this forum: No registered users and 13 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