Hugh,
The bike I'm thinking of is a team Pro from the early 1980's. I always wondered if my friend wasn't confused, but I'll check into it. As for the proprietary thread spec's, I think a lot of cheaper raleighs retained this feature into the 1970's. I remember my boss tapping 26tpi shells to 24tpi on some semi-old Raleighs in the early 1980's. I think they were Raleighs. He said that they had Whitworth thread BB's.
> A Raleigh with a 70 mm bottom bracket was probably a
> 1950's or earlier when
> Raleigh used their own distinctly odd design with
> non-standard width and
> non-standard threading. I'm sure that some were
> re-tapped with English
> (British?) threads, but with the width left the
> same. In fact I had that
> done to a fiftyish Lenton in about 1960 so that I
> could use more readily
> available parts (I wouldn't do that now of course).
> I don't know when
> Raleigh decided to adopt a more normal bottom
> bracket, but I sort of assume
> that it was not later than the TI takeover. I have
> a mid- to late-fifties
> Raleigh track bike with their odd bottom bracket.
>
> Hugh Thornton
>
> Tom Dalton wrote:
> "2) (Real Raleigh buffs chime in now...) Perhaps
> we've
> missed the point of your question. Are you really
> asking which NR double spindle fits the BB shell of
> your frame? I say this because a friend of mine had
> a
> custom Raleigh that had a 70 mm bottom bracket
> shell.
> At least that's what I remember. It was a hastle to
> compile the parts to make an
> English-threaded/Italian-width BB."
>
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