[CR]Triple crank conversions

(Example: Production Builders:LeJeune)

Date: Fri, 05 Jul 2002 09:19:15 -0700
From: "Brian Baylis" <rocklube@adnc.com>
To: classicrendezvous@bikelist.org
Subject: [CR]Triple crank conversions

Listmembers,

I've had occassion lately to search out some triple cranks. In my digging I found a set of NR 165mm road crankarms that are low milage(no cracks in the web, very few marks) that are standard double crankarms. I bought some of the pieces Campagnolo made for making their triple cranks and decided to make a triple setup out of this particular set of arms. I have some Campagnolo 36 T chainrings that are 100mm bolt circle. I figured that if I was going to drill the arms I might as well place the studs in a position where I have a selection of chainrings. I chose a 74mm bolt pattern which puts the studs in the thicker part of the spider and presents chainrings from 24 to 34 teeth which is very nice compared to only having a 36 T ring available. Anyone taken this approach before? Is there a "triplizer" middle ring made for the 144 bolt circle that eliminates this operation? If not, why not? There must be tons of Campagnolo cranks that would like to be made into triples without drilling and tapping the arms and having the studs to go with it.

Brian Baylis La Mesa, CA Man, that's a lot of typing; "Campagnolo" every time. I like the Brit version, Campag. Isn't anyone going to lobby on behalf of everyones' typing finger(s)?