I carry the 42/144 TA Competition triple-izer that is current TA production. I don't believe you can get one any smaller to fit the 144 BCD, though..... 41 would be the physically smallest size that would ever fit....
Greg Parker Ann Arbor, Michigan
http://www.bicycleclassics.com
Date: Mon, 7 Feb 2005 18:07:30 -0800 (PST) From: Thomas Adams <thomasthomasa@yahoo.com> To: "Charles R Johnston Jr." <crj@frii.com>, classicrendezvous@bikelist.org Subject: Re: [CR]Triple crankset machining/jig setup?
Did you consider using a triple-izer ring? TA makes a 38 or 39 tooth version, that Harris Brothers sells (among other's, I'm sure). I don't know if Willow is still in business, but they made the same thing.
http://sheldonbrown.com/
No need to machine anything, just need a longer BB spindle and (probably) a different rear derailler with greater chain wrap capacity. If aesthetics is a concern, I believe one of these rings hides the granny ring attachment behind the crank arms.
Certainly it's possible to drill a Campy crank to accept a granny ring, I've seen it done. Can't recall ever seeing a D-A conversion, but I don't see why not. Drilling is just more work, and can't be undone, unlike the conversion ring. Your call, of course.
Tom Adams, Shrewsbury NJ
"Charles R Johnston Jr." <crj@frii.com> wrote:
Does anyone remember the post re: making a Campy/Dura Ace double crankset
into a Triple ? Think it was within the last year or year and a half. I
cannot find it in the archives and wanted to take a look at the setup before
I started machining stuff for my D-A conversion.
Thanks
Chuck Johnston
Ft Collins Co.