[CR] changing Simplex rings on Magistroni cranks

(Example: Framebuilders:Alex Singer)

Date: Tue, 5 Jan 2010 19:06:33 -0800
From: "Jerry Tenenberg" <jtenenberg@yahoo.com>
To: <classicrendezvous@bikelist.org>
Subject: [CR] changing Simplex rings on Magistroni cranks


Hello All, I have a 46 inner and 49 outer ring on a 1959 Magistoni crank with Simplex arms. The 46 inner is shot, and i want to replace the outer ring with a 53 I have and use the 49 for the inside. 2 questions: 1) the 49 I switch to the inside will NOT have the recess for the bolts. If tightened will that work OK or be a problem 2) will that gearing work with a Gran Sport, same era, front and rear derailleur?

Thank you for your help.
Jerry Tenenberg
Encinitas Cal, USA