Bike Forums - View Single Post - Stronglight chainrings multiple bcd?

02-07-26 | 07:51 AM

#5

jonwvara

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Joined: Apr 2006

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From: Washington County, Vermont, USA

Bikes: 1966 Dawes Double Blue, 1976 Raleigh Gran Sport, 1975 Raleigh Sprite 27, 1980 Univega Viva Sport, 1971 Gitane Tour de France, 1984 Lotus Classique, 1976 Motobecane Grand Record

Quote:

Originally Posted by bulgie

I used one of those to make my triplizer for SL 93 cranks. The middle set of holes is at 122 mm, so all you have to do is counterbore them for the flange of the nut to nestle down flush, to avoid snagging the chain.

Oh and on the crank, you have to remove the shelves on each of the 5 spider arms where the inner went when it was a double. I just hacksaw them off then file smooth.

Some manufactured triplizers require the same thing, but that has always struck me as an unnecessarily brutal modification. I have delicate sensibilities, it looks like.

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