On Monday, October 22, 2007, at 02:23PM, <classicrendezvous-request@bikelist.org> wrote:
>-----Original Message-----
>From: classicrendezvous-bounces@bikelist.org
>[mailto:classicrendezvous-bounces@bikelist.org] On Behalf Of Mark Stonich
>Sent: Monday, October 22, 2007 10:10 AM
>To: Mark Cutrufelli
>Cc: classicrendezvous@bikelist.org
>Subject: RE: [CR]Campy triple on masi ebay- Options available Advice Needed
>
>At 10/21/2007 08:16 PM -0400, Mark Cutrufelli wrote:
>> Soooo....Don't
>>know if this works but I had in mind on my Campy SR crank to have a
>>cyclocross ring on the outer. Then a 50 SR and then a 36 inner ( via
>>the willow or TA tripilizer) Do you think this works?
>
>Nope. Triplizers don't come in 50t, I think 45t is the largest. And they
>all seem to use a 74mm inner circle. Not even TA makes a 74mm larger than
>32t.
>http://vintage-trek.com/tripleizer.htm
>
>Mark Stonich;
If TA doesn't make 74mm bcd chainrings in larger than 32t, then it's a fairly recent development. I have a 34t 74bcd that was bought less than two years ago. It was from a french shop online, I forget what it was called. If I recall, it was stamped 9/10 spd, which would be pretty recent manufacture.
Going back further, Mavic offered larger than 32t rings with their 631 cranks, some of these might be floating around on Ebay.
Baird