Amir, I have one of these, at least the drive side in 165mm that I plan to use on a fixie. On the back of the arm is does indeed say Shimano and then Touring in cursive. Hole to hole looks to be 88mm with a bolt circle of 94mm? The large center hole is 80mm. I found a couple of 44t on ebay a year or so ago (Australia), and someone from France had a 53t? on ebay last week but didn't answer my question about bolt circle. These do not come up often.
Regards,
John Wilson
Greensburg PA
USA
>>>Amir Avitzur <avitzur@013.net> wrote:
At least once a year, the bike magazines in Japan publish a catalog of sorts. In the "Randner" section of the '81 Cycle Sports Special Cycle Album there were a few bikes with Shimano 600 Touring 3-pin cranksets;
(see http://www.flickr.com/
>>Jerry Moos responded:
I've never seen that Shimano crankset before, but it looks like a pretty close copy of the 70's/ early 80's French 3-arm cotterless cranks from TA, Nervar and Stronglight. The TA version was OE on the Raleigh Competition Mk II and on some Motobecane Grand Records. I'd bet the Shimano used a 116 BCD bolt circle, which was used on all the French 3-arm cotterless cranks, as well as the 3-arm version of the Campy Grand Sport crank. This circle was a carryover from the 3-arm cottered steel cranks of the 50's and earlier. I've been collecting these cranks and their rings recently. The rings used a 9mm bolt hole as compared to 10mm for modern 5-arm cranks, although some of the inner ring for these cranks had a 7 mm hole.
>And Don Gillies:
I don't think that's a 'touring' crankset, I think it's a
1st-generation Shimano 600 crankset, rumored to be made for only a year or so, you can look it up in Frank Berto's book, but I remember it from the late 1970's, maybe 1978.