Retrobike Forum Index

It is currently Sun Dec 04, 2016 1:20 pm

* Login   * Register * Search  * FAQ



Post new topic Reply to topic  [ 6 posts ] 
Author Message
PostPosted: Sun May 05, 2013 7:06 am 
Newbie

Joined: Sat Apr 06, 2013 1:38 pm
Posts: 4
I was trying to fit an Italian Threaded Campy SR headset onto the fork but it wouldn't fit.

Could the fork be French threaded? I bought the frame from ebay in the US. I tried the headset on a Reynolds fork and it fit perfect.

Another question is, the bottom of the Colnago fork has a slightly increased diameter and I cannot slight the fork race through, can anyone help. I am new to bike re-building.


Top
 Profile  
 
PostPosted: Sun May 05, 2013 8:56 am 
Retro Guru
User avatar

Joined: Mon Mar 26, 2012 5:21 pm
Posts: 589
It's very unlikely that the forks will be French standard, certainly Italian.

The three standards you are likely to encounter are ISO (British), Italian and JIS: ISO and JIS threads are the same and Italian threads are so similar, that in practice all three are interchangeable.

However, the internal diameter of the crown race differs across each standard: ISO is 26.4mm, Italian is 26.5mm or 27.0mm and JIS is 27.0mm.

If your headset screws onto the Reynolds forks but not the Colnago pair, then I suggest you clean out the Colnago's threads: if they have been damaged, then you may need to get them re-cut.

I guess your forks have a 27.0mm crown, but unfortunately you have a 26.5mm crown race: you could either widen the crown race with emery cloth etc, or get a race from a JIS headset.

Probably best to check with Vernier callipers first though.


Top
 Profile  
 
PostPosted: Sun May 05, 2013 2:18 pm 
Newbie

Joined: Sat Apr 06, 2013 1:38 pm
Posts: 4
I have inspected the thread on the Colnago fork and it looks fine. Yes, puzzling isn't it. I too don't think it would be french. Maybe I should go take a more detailed look at the thread, like you mentioned perhaps it got damaged during shipping.

Oh btw, my Reynolds 501 fork appears to have a fork race as part of the fork itself, is that common, and therefore I can use it instead of using the fork race from the headset?

Thank you.


Top
 Profile  
 
PostPosted: Sun May 05, 2013 2:19 pm 
Newbie

Joined: Sat Apr 06, 2013 1:38 pm
Posts: 4
Oh one more question, anyone can tell me where I can get paint to match: Saronni Red and Raleigh Team Red?


Top
 Profile  
 
PostPosted: Sun May 05, 2013 5:58 pm 
Retro Guru
User avatar

Joined: Mon Mar 26, 2012 5:21 pm
Posts: 589
Can't say I've come across forks with an integrated crown race, but I'm far from an expert. Are you sure it's not just been painted over?

To answer your question, "yes" you can use races from one headset with another, provided they use the same type of bearing: ie you can't mix ball bearing, needle roller bearing or sealed bearing races.


Top
 Profile  
 
PostPosted: Sun May 05, 2013 6:00 pm 
Retro Guru
User avatar

Joined: Mon Mar 26, 2012 5:21 pm
Posts: 589
A paint factor or bodyshop will be able to mix paint to match, but depending on how much you want this might prove expensive.


Top
 Profile  
 
Display posts from previous:  Sort by  
Post new topic Reply to topic  [ 6 posts ] 

All times are UTC [ DST ]


Who is online

Users browsing this forum: Big Block, riddim-track and 27 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