Re: [CR]Freewheel threads on hubs...when did they start telling us what the threading was?

(Example: Framebuilding)

Date: Sun, 28 Jan 2007 11:01:35 -0600
To: classicrendezvous@bikelist.org
Subject: Re: [CR]Freewheel threads on hubs...when did they start telling us what the threading was?
References: <002201c741b2$4970c5a0$b0f0d045@ts> <45BC1D7B.7030608@os2.dhs.org> <p06240807c1e1d465fe02@[10.0.1.42]>
In-Reply-To:
From: "John Thompson" <johndthompson@gmail.com>

Sheldon Brown wrote:
> John Thompson wrote:
>>
>> Older English thread Campy hubs were marked with a single groove on the
>> hub shoulder (where later versions stamped the thread specification):
>>
>> http://www.os2.dhs.org/~john/old-english-campy.jpg
>>
>> Italian and French were both unmarked, but readily distinguished by the
>> difference in diameter (36mm for Italian; 35mm for French).
>
> You were doing fine until the parenthesis...You're getting confused with
> bottom brackets. Italian freewheel threads were 35 mm x 24 tpi (Ital
> BBs are 36 mm.) This is so close to English/ISO as to be
> interchangeable as a "class b fit."
>
> French is significantly smaller, 34.7 mm and has a finer pitch (1 mm.)

Um, err. Right you are. I'll just toddle off now, shall i?

--
John Thompson (john@os2.dhs.org)
Appleton WI USA