Re: [CR]ebay elliptical chainring

Date: Mon, 03 Dec 2007 23:33:31 -0600
To: "Howard Darr" <hdarr@localnet.com>
From: "Mark Stonich" <mark@bikesmithdesign.com>
Subject: Re: [CR]ebay elliptical chainring
In-Reply-To: <000001c83630$a16b6800$7b47fc04@D1S2F761>
References: <009601c83622$98880c60$6402a8c0@peter5ca78cb10> <345384.10454.qm@web82207.mail.mud.yahoo.com>
cc: Classicrendezvous@bikelist.org

At 12/3/2007 11:46 PM -0500, Howard Darr wrote:
>No relation to seller just interesting
>
>Someone probably needs that for their too cool fixed gear.

I'm guessing the chain would go too slack at times for a fixed gear.
>I am curious about all the holes.

Most likely the 2 holes at 180 degrees were for mounting an Al plate to a fixture for CNC machining. Probably just a steel bar or plate that was clamped into a vice in a CNC Milling station.

I'm a fan of BioPace and Q-Rings, but IMHO the Durhams were too radical for anything but pedal watercraft.
>http://ebay.com/<blah>
>799505QQihZ012QQcategoryZ56197QQssPageNameZWDVWQQrdZ1QQcmdZViewItem

Mark Stonich;
     BikeSmith Design & Fabrication
       5349 Elliot Ave S. - Minneapolis. MN 55417
            Ph. (612) 824-2372 http://bikesmithdesign.com
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