[CR]BB axle material?

(Example: Framebuilders:Bernard Carré)

Date: Fri, 4 Apr 2003 08:44:09 -0800
To: classicrendezvous@bikelist.org
From: "Jan Heine" <heine@mindspring.com>
Subject: [CR]BB axle material?

I need to make (or have made) a new axle for a BB. The BB has tapered roller bearings, so there is no need for hardened ball races. Effectively, this looks like a modern cartridge bearing BB axle.

Requirements are: Must be OK to machine and thread (crank bolts). Must be safe to use - it's for a tandem, so the forces can be significant.

I suspect 4130 Cromoly is a good material, but I really don't know much about materials. Any help appreciated.

Jan Heine, Seattle