Re: [CR]Shimano 600 Touring Crankset

(Example: Racing:Beryl Burton)

Date: Fri, 7 Sep 2007 20:08:46 -0700 (PDT)
From: Jerome & Elizabeth Moos <jerrymoos@sbcglobal.net>
Subject: Re: [CR]Shimano 600 Touring Crankset
To: Amir Avitzur <avitzur@013.net>, Classicrendezvous <classicrendezvous@bikelist.org>
In-Reply-To: <JJEEKLDDELHGFDGDBELBIEMIFEAA.avitzur@013.net.il>


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.

Regards,

Jerry Moos Big Spring, TX

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/photos/8210984@N06/1343474284/) notably a Toei Randoneur (48,000 Yen).

Cycle Sports also published an annual parts catalog. It shows that the Shimano 600 (FC6100) crankset could be purchased with 30 ~ 53T chainrings.

I got one of these off ebay with well worn chainrings. Anyone have spares? Anyone know the BCD?

This crankset, without the rings, looks something like the Rene Herse crankset at http://www.classicrendezvous.com/France/bicycles/Herse/Herse_gr_56.htm

Anyone know the RH crankset's BCD?

Were there other 3 pin cranksets designed for wide range gearing?

Amir Avitzur
R"G Israel