Re: [CR] Cranks and BCD, old + new

(Example: Production Builders:Cinelli)

Date: Sun, 25 Jan 2009 21:51:01 +0100
From: "M-gineering" <info@m-gineering.nl>
Cc: Classic Rendezvous <classicrendezvous@bikelist.org>
References: <E1LQw88-0003ud-4S@elasmtp-scoter.atl.sa.earthlink.net> <79A64059-777F-4EDE-ADFB-2FB20B3E0FB3@gmail.com> <c6ff64470901250710k5063cc6oada47ca9937cc6ea@mail.gmail.com> <a06230911c5a267683bc4@[192.168.1.33]>
In-Reply-To:
Subject: Re: [CR] Cranks and BCD, old + new


Jan Heine wrote:
>
> By the way, the bolt-circle diameter with the five screws was used by
> other makers as well. Magistroni made steel cranks with the same
> pattern. The Gnutti splined cranks and various French cranks all used it
> as well. I am not sure whether they copied Stronglight (so they could
> use their aluminum rings), or whether the BCD predates 1933. TA started
> by making aluminum chainring, to be used with other makers' cranks, so
> it was natural to use the same standard when they introduced their cranks.
>

Even Shimano had their version of these cranks! -- mvg

Marten Gerritsen
Kiel Windeweer
Netherlands