thanks to all that responded. I assumed the pro (i am assuming it is a pro as that is how it was advertised) was Raleigh, I will check that after sandblasting. this super corsa is up on the stand and i will have to see if i have a BSC around to check....gabriel, chesterfield nj usa
Marcus Coles wrote:
> Pete Geurds wrote:
>> From: "gabriel l romeu" <romeug@comcast.net>
>> To: <classicrendezvous@bikelist.org>
>> Sent: Monday, March 05, 2007 8:36 AM
>> Subject: [CR]in quest of raleigh BBs,
>>
>>
>>> It seems. if the rumours that these frames are indeed Raleigh, and
>>> if the proprietary 26tpi sizing are correct, I will be needing a pair
>>> of bottom brackets for what appears to be an early 70's grand sport
>>> and professional.
>>> in rideable condition please....
>>
>> The Professional will be regular BSC threading.
>> The Gran Sport being a 531 tubed machine should use BSC threading too.
>> In my limited experience, in dealing with Raleighs:
>> If the bottom bracket looks like the BB found on most other bikes than
>> it's most likely normal BSC threading.
>> If it looks like fixed cup is sunk into BB shell, and has 5/8'' wrench
>> flats, it should be a Raleigh thread (26tpi).
>>
>> FWIW:
>> My 78 Super Grand Prix, a notch below the Super Course, uses a Raleigh
>> bottom bracket.
>> Helpful to know if wanting to do a 3 speed conversion on a lower end
>> 10 speed bike.
>>
> In my also limited experience, all Super Course or higher are BSC threa
ded.
> I once was told all Worksop production was BSC threaded and Nottingha
m
> production was Raleigh thread.
> The Worksop made Raleigh Grand Prix, at least the two I have owned a
> 1968 and a 1969 were BSC threaded.
> Canadian made Grand Prix 1975 to 1979 were BSC threaded, to add to the
> confusion these have a Nottingham headbadge, may or may not have a "Mad
e
> in Canada" decal, but will not have a "Made in England" decal.
> All others I have seen or heard about were Raleigh threaded.
> That said when it comes to Raleigh production there are no hard and fas
t
> rules, but then that's part of the fun. :-)
>
> Marcus Coles
> London, Ontario, Canada
--
gabriel l romeu
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