RE: [CR]seat post bolt question

Example: Framebuilders:Brian Baylis
content-class: urn:content-classes:message
Subject: RE: [CR]seat post bolt question
Date: Wed, 9 Jul 2003 16:10:54 -0400
Thread-Topic: [CR]seat post bolt question
From: "Bingham, Wayne R." <>
To: <>

Ah. The old, weird 13mm hex fixing bolt. What was Campy thinking, anyway? Go ahead and change the bolt to a quality 6mm hex of similar specs, as Brian suggests. Make sure there's a washer under the bolt head. I've done it numerous times, and it's even sort of period correct, since it was a fairly common "upgrade" at the time.

Ciao -

Wayne Bingham Falls Church VA


There is a 6mm allen bolt version of that seat post; the generation just after the 13mm hex version that you have. I've never tried it, but I suspect the parts are interchangable. I also seem to remember some aftermarket alloy seat bolts, but I'm not sure that is a real good place for such a bolt under the circumstances. I also think a properly threaded and proper length regular allen bolt would work; I would put two washers under the head of the allen bolt.

Brian Baylis La Mesa, CA
> Ok, I know I'm might be committing some kind of serious blasphemy here in
> asking this, so please forgive me in advance. My boyfriend's Waterford
> uses a 27.4 post and most of the modern options just didn't float his
> boat. The boating floating post was a Campy 27.4 post which a list member
> (thanks, Tom!) was kind enough to sell me. It uses a single bolt for the
> seat clamp, looks great, is the right length and he likes it a lot. So I'm
> feeling I gave him a nice present.
> Only problem, and this is where the blasphemy part comes in, is the bolt
> that tightens the seat clamp is a 13mm hex head, not a bolt adjustable with
> an allen key. He'd like it to be an allen bolt, is there anything about
> that bolt (strange size and/or threading) that means he cannot use another
> fastener in it's place? I
> Me - well I'd carry a 13mm wrench, and not worry about it, but then again
> he wouldn't ride something non indexing, so there you have it!
> Ann Phillips - Decatur GA