Question for Sheldon-shimano cranks

Qui si parla Campagnolo said:

I know I could do some sort of internet search or something but it's
easier just to ask..

Sheldon, or whoever, when did shimano road cranks go to the 130mm bolt
circle?

Thanks in advance.

IIRC, it goes back to the early '70s, but I can't be anymore exact than
that. I believe Shimano "invented" the 130mm BCD, which was later
adopted by SR, Sugino, etc.

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Quoted message said:

I know I could do some sort of internet search or something but it's
easier just to ask..

Sheldon, or whoever, when did shimano road cranks go to the 130mm bolt
circle?

Thanks in advance.

Shimano has used 130mm BCDon their racing cranksets since early 1970s. 130mm
allso adopted by Sakae,Stronglight, Sugino, Sun Tour and Takagi

PK

Qui si parla Campagnolo said:

I know I could do some sort of internet search or something but it's
easier just to ask..

Sheldon, or whoever, when did shimano road cranks go to the 130mm bolt
circle?

Thanks in advance.

in my 74 catalogue road is 130, track 144

--
---
Marten Gerritsen

INFOapestaartjeM-GINEERINGpuntNL
www.m-gineering.nl

P K said:

Shimano has used 130mm BCDon their racing cranksets since early 1970s. 130mm
allso adopted by Sakae,Stronglight, Sugino, Sun Tour and Takagi

And TA, who also use it for track - although the TA Alize track chainset
seems to be the same forging as the road double these days - the pretty
4-arm version has gone out of production.

M-gineering said:

Qui si parla Campagnolo said:

I know I could do some sort of internet search or something but it's
easier just to ask..

Sheldon, or whoever, when did shimano road cranks go to the 130mm bolt
circle?

Thanks in advance.

in my 74 catalogue road is 130, track 144

I think Marten's correct. AFAIK, Shimano road cranks *started out* with
the 130mm bolt pattern. I certainly never saw otherwise- but then, I
didn't start paying attention to bolt circles until the late '70's. I
guess I had a deprived childhood.

Jeff

Qui si parla Campagnolo said:

I know I could do some sort of internet search or something but it's
easier just to ask..

Sheldon, or whoever, when did shimano road cranks go to the 130mm bolt
circle?

Somewhere around 1972, IIRC

--
Andrew Muzi
www.yellowjersey.org
Open every day since 1 April, 1971

A Muzi said:

Qui si parla Campagnolo said:

I know I could do some sort of internet search or something but it's
easier just to ask..

Sheldon, or whoever, when did shimano road cranks go to the 130mm bolt
circle?

Somewhere around 1972, IIRC

--
Andrew Muzi
www.yellowjersey.org
Open every day since 1 April, 1971

Grazie-