RE: [CR]Stem expander thread

(Example: Framebuilding:Tubing)

From: "Ken Freeeman" <freesound@comcast.net>
To: "'Jerome & Elizabeth Moos'" <jerrymoos@sbcglobal.net>, <classicrendezvous@bikelist.org>
Subject: RE: [CR]Stem expander thread
Date: Thu, 14 Jul 2005 20:44:40 -0400
In-Reply-To: <20050714174209.55255.qmail@web81002.mail.yahoo.com>
Thread-Index: AcWIm9tFG11EefcyTM2QS6rKoNfVqQAOgbEw


I just went to the box o' stems to compare a Technomic and a Cinelli 1/A. No go! Diameter looks the same, but the Cinelli thread looks like a finer pitch, and possibly the thread depth is less (a result of the pitch?).

Ken Freeman Ann Arbor, MI

-----Original Message----- From: classicrendezvous-bounces@bikelist.org [mailto:classicrendezvous-bounces@bikelist.org] On Behalf Of Jerome & Elizabeth Moos Sent: Thursday, July 14, 2005 1:42 PM To: classicrendezvous@bikelist.org Subject: [CR]Stem expander thread

I've just cut down a Nitto Technomic stem that was too long for a headtube on a 53cm frame with the bars set fairly low. Problem is, the expander bolt is only threaded the last few cm, so if I cut it to match the reduced stem length, I will cut off the threaded section. Fortuitously, it happens the Nitto expander uses a standard M8 x 1.25 thread and I've found a net site that sells stainless M8 x 1.25 socket head cap screws as long as 140mm, which should be sufficient. I will probably order one or two, but if these will work for most European and Japanese stems, I may order several more. Does anyone know if the M8 x 1.25 thread is common to all major European and Japanese stem expanders? Or does it vary from brand to brand? I imagine the older UK stems are probably English thread.

Regards,

Jerry Moos