Carbon steerer and expander advice please (Colnago Star 1")

Discuss light weight issues concerning road bikes & parts.
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HillRPete
Posts: 2292
Joined: Tue Apr 12, 2011 8:08 am
Location: Pedal Square

by HillRPete

My latest build is using a 1" Colnago Star fork. Unfortunately I only got the fork, 2nd hand, not the matching expander. So I'm wondering if it is ok to use the fork without the original expander inside, supporting against the stem clamp pressure? (I can preload the headset just fine with a screw clamp from the fork crown to the stem.)

PS: if anyone has a Colnago 1" carbon fork expander for sale, please PM.

DaveS
Posts: 2529
Joined: Fri Mar 24, 2006 1:26 pm

by DaveS

The Colnago plug is quite long, but it shouldn't cause any harm, not to use it. I'd find it very inconvenient, not to have for headset bearing adjustments. Here's a link to a plug for 1" carbon steering tubes.

http://www.excelsports.com/main.asp?pag ... =1&minor=3

by Weenie


HillRPete
Posts: 2292
Joined: Tue Apr 12, 2011 8:08 am
Location: Pedal Square

by HillRPete

Yeah thanks Dave, unfortunately the Star fork has thick walls, so most other 1" expanders don't fit. Anyway I found a Colnago one in the meantime, yey.

User Name
Posts: 603
Joined: Tue Jun 07, 2005 3:32 pm

by User Name

eh, I'd do it if I could adjust the headset properly. A lot of people do up stem bolts too tight, anyway; they're supposed to be 'just' loose enough so that the bars/stem move on the steerer to absorb some of the impact, instead of the force busting stuff

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