Re: [CR] stronglight 49d crank bottom bracket bearing size?

(Example: Events:Cirque du Cyclisme:2004)

From: "David Snyder" <dddd@pacbell.net>
To: <classicrendezvous@bikelist.org>
References: <81CB9178E8D1431BAEBA8211E74E2394@BenjaminPC>
In-Reply-To: <81CB9178E8D1431BAEBA8211E74E2394@BenjaminPC>
Date: Sun, 13 Dec 2009 16:19:45 -0800
Subject: Re: [CR] stronglight 49d crank bottom bracket bearing size?


That's very interesting. I have heard of at least one reference to the use of 6mm (.236") balls in Stronglight bb's, and if so that might allow one add'l ball???

How many of the 1/4" balls fit now? IIR there should be 11, and I've taken apart a few factory builds. Also, iir, The late Sheldon's site made note of a rolling diameter (ball track diameter) discrepancy with respect to using non-Stronglight cups or spindles with mating Stronglight parts. This might explain clearance differences regardless of ball size.

Anyone have details on this?

Sorry, I don't have a loose Stronglight bb here to look at.

David Snyder
Auburn, CA usa


----- Original Message -----
From: Benjamin I Cole
Subject: [CR] stronglight 49d crank bottom bracket bearing size?



> Are 1/4" bearings correct for the early 70s stronglight 49d crank bottom
> brackets? With 1/4", there is a gap but not enough for 1 more bearing.
> This seems to be causing the bb to be noisy. Is this the nature of these?
> Sorry, i don't work on much french. I checked archives and sheldon but
> didn't see anything.