Re: [CR]Stronglight cranks

(Example: Framebuilders:Cecil Behringer)

Date: Sun, 05 Aug 2001 14:18:25 +0000
Subject: Re: [CR]Stronglight cranks
From: "Hilary Stone" <hilary.stone@tesco.net>
To: Jerry & Liz Moos <moos@penn.com>, <donrazr@juno.com>
Cc: <classicrendezvous@bikelist.org>
In-Reply-To: <3B6C777E.C4C2A64F@penn.com>


I think I have read somewhere - probably Sutherland's that the change from 23.35mm to 22mm extractor threads occured in in 1982. I have certainly had 49D cranks with 22mm extractor threads. Stronglight I think first introduced a steel cotterless set with the familiar taper fittings around 1933. The 49D was I am pretty certain out by 1936 - it was imported into Britain by Constrictor from 1938 - I have one crank which is stamped on the back Conloy, Constrictor's trademark for aluminium alloy components. Stronglight also made a number of cottered and cotterless steel chainsets. The next cotterless aluminium set was I believe the type 57 introduced in 1957 for the road racing market with ???? BCD fitting chainsets. This was superseded by the type 63 in 1963. The changes were very subtle. the 49Ds also changed over time - in the late 60s or earlyish 70s they became a bit squarer and more substantial.

Hilary Stone

Jerry Moos wrote:
> The change occured in the early 80's. To the best of my knowledge,
> Stronglight mod 93 and earlier (mods 63, 57, 49) were only made in
> 23.35. Mod 106 and later (and maybe 105) were made only in 22.0. Mods
> 99, 104, and maybe 105 were made in both 23.35 and 22.0. This makes
> mods 104 and 99 very interesting, as you must try to match old crankarms
> both with respect to pedal thread (French or English) and exractor
> thread (23.35 or 22.0) I don't think the axle taper changed when the
> extractor thread did.
>
>
> donrazr@juno.com wrote:
>
>> Can anybody tell me-
>>
>> When did Stronglight change from 23.35 crank threading to 22 ?
>>
>> What was the model # of the first 22 threaded cranks?
>>
>> Are the tapers the same dimension on 23.35 threaded cranks as on 22?
>> (Will they work on the same spindle?)
>>
>> When I hear reference to "old style" Stronglight cranks, is that
>> reference to 23.35 threaded cranks?
>>
>> What are the model numbers of classic Stronglight cranks and their
>> chronology?