Ride, Wrench, Swap, Race
Join Date: Jan 2010
Location: Northern California
Posts: 9,194
Bikes: Cheltenham-Pedersen racer, Boulder F/S Paris-Roubaix, Varsity racer, '52 Christophe, '62 Continental, '92 Merckx, '75 Limongi, '76 Presto, '72 Gitane SC, '71 Schwinn SS, etc.
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I've modified a 36t, 110mm MTB chainring to fit on one of these cranksets.
It worked well and I retained the strong steel chainring bolt hardware (because of the low level of precision that I applied while hogging away at the chainring holes and spider-shoulder seatings with my files).
I used a simpler bevel in lieu of a counterbore, so there was a bit of break-in time during which the bolts got a couple of re-torquings.
Yeah, it was a bit of work!
Last edited by dddd; 05-16-22 at 12:05 PM.