Re: [CR]Campy Triple Bolt Circle, (was: BB for Nuovo Record triple crankset?)

(Example: Bike Shops)

Date: Sun, 23 Sep 2007 12:33:46 -0700 (PDT)
From: Jerome & Elizabeth Moos <jerrymoos@sbcglobal.net>
Subject: Re: [CR]Campy Triple Bolt Circle, (was: BB for Nuovo Record triple crankset?)
To: Jeff Slotkin <jeffslotkin@comcast.net>, C R List <classicrendezvous@bikelist.org>
In-Reply-To: <B60DEBA0-E7C5-4DC3-B77D-36D05EE611C2@comcast.net>


According to Sutherland's, the Campy inner was 100mm, just 2mm smaller than the Avocet/Ofmega larger inner circle. Too bad the two couldn't standardize it. Sutherland's shows minimum ring of 36, but I think that just means it was the smallest Campy made. They show a 32 minimum for the 102mm Ofmega circle and a Merz "Adapter" with a min 31 tooth for the 100mm circle. So you could almost certainly use a 32 and probably a 31, if anyone would make one.

I have 36T rings for 116 BCD 3-arm TA Professional and for 116 5-arm Campy Victory and late Grand Sport and even for 120mm Zeus, so 36T quite obviously is not even close to the smallest that can be produced for a 100mm circle

Regards,

Jerry Moos Big Spring, TX

Jeff Slotkin <jeffslotkin@comcast.net> wrote:

On Sep 23, 2007, at 10:26 AM, David G. White wrote (in answer to Aldo's now-solved problem):


>
> Or look at the 1973/74 catalog on the Campy Only site:
>
> http://www.campyonly.com/history/1974/triples.pdf

I looked, and it raised a question I think I saw addressed years ago, or maybe is common knowledge, but I can't find it in the archives:

What is the inner circle of the triple that came with a 36 tooth ring, and what is thus the theoretical minimum number of teeth for that ring? I can see from the pic it could go lower than 36, if someone with too much time on their hands wanted to make the ring.

Jeff Slotkin
Charleston, SC, US