Re: [CR]Zeus chainrings --- 118 or 120 BCD

(Example: Framebuilding:Paint)

Date: Wed, 01 Dec 2004 15:54:49 -0600
From: "John Thompson" <>
Organization: The Crimson Permanent Assurance
Subject: Re: [CR]Zeus chainrings --- 118 or 120 BCD
References: <> <006901c4d763$cce1f0f0$11f6a652@ericaspc> <> <000a01c4d7c3$96420480$52f4a652@ericaspc> <> <00ca01c4d7e0$862e1670$52f4a652@ericaspc>
In-Reply-To: <00ca01c4d7e0$862e1670$52f4a652@ericaspc>

Amir Avitzur wrote:
> I just tried to measure the BCD of a Zeus chainring with pencil, paper and
> ruler,
> but did not get a consistent BCR ... the radius is either 59 or 60 mm.
> Sutherland's 3rd edition sais 120.
> Zeus Catalogue 102 is no help
> Does anybody have a definitive measurement?
> Were there ever any non-Zeus inter-changeable chainrings?

AFAIK, no. Zeus was all by themselves with that BCD.
> BTW: Anybody out there with a good 36T to sell or trade?

I wish. I have one 36T and have been looking for another for a couple years now (I have two Zeus cranks in service here).


-John Thompson (
Appleton WI USA