Retrobike Forum Index

It is currently Sun Dec 04, 2016 7:40 am

* Login   * Register * Search  * FAQ



Post new topic Reply to topic  [ 3 posts ] 
Author Message
PostPosted: Tue May 29, 2012 10:02 pm 
retrobike rider / Gold Trader
retrobike rider / Gold Trader

Joined: Thu Aug 06, 2009 10:30 pm
Posts: 1255
Location: Desk
I have an ahead cane creek fitted to an older frame and the fork is 1" threadless. The top cap I have expands rather than tightens when erm, well tightened.

My question is this. Should a star nut be under tension to hold the headset taught or should it sit there not under pressure as you tighten the ahead stem in place. I am getting gradual looseness through the headset and want to curb it. I tightened then bar stem to f.tight but it is gradually getting loose.

Help!

Thanks

D


Top
 Profile  
 
 Post subject:
PostPosted: Wed May 30, 2012 10:51 am 
Old School Grand Master

Joined: Tue Oct 09, 2007 1:55 pm
Posts: 8202
Location: New Forest, UK
There is something wrong if the headset works loose with the stem tight. The star nut / top cap is there to pre-tension the bearing until the stem collar is tightened.

Either:
1 The bearing cups were not snug in the frame and are working their way in (common)
2 The headset ran loose and is ovalised slightly, these can be horrors to keep tight.

For 1, retighten and tell off whoever installed the cups...

For 2, I have solved it by removing the brake and front wheel, tightening the headset up and then spinning the whole steering several revolutions. This seems to settle the bearings into their loosest position. You may then need to retighten.


Top
 Profile  
 
 Post subject:
PostPosted: Wed May 30, 2012 11:03 am 
retrobike rider / Gold Trader
retrobike rider / Gold Trader

Joined: Thu Aug 06, 2009 10:30 pm
Posts: 1255
Location: Desk
Thanks for this. I think the problem may be a combo of what you said plus the top cap I have doesn't really add anything to the tension as it just expands inside the steerer, doesn't tension anything.

I think I will go and seek a star nut and do it that way - plus do the fitting in the manner you suggested.

Cheers

D


Top
 Profile  
 
Display posts from previous:  Sort by  
Post new topic Reply to topic  [ 3 posts ] 

All times are UTC [ DST ]


Who is online

Users browsing this forum: mdvineng, Webskipper 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