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Path: utzoo!watmath!clyde!burl!ulysses!mhuxr!ihnp4!pesnta!hplabs!hp-pcd!craig
From: craig@hp-pcd.UUCP (craig)
Newsgroups: net.bicycle
Subject: Re: Sprokittz
Message-ID: <7700005@hp-pcd.UUCP>
Date: Mon, 11-Mar-85 14:31:00 EST
Article-I.D.: hp-pcd.7700005
Posted: Mon Mar 11 14:31:00 1985
Date-Received: Sun, 10-Mar-85 08:12:50 EST
References: <849@topaz.UUCP>
Organization: Hewlett-Packard - Corvallis, OR
Lines: 10
Nf-ID: #R:topaz:-84900:hpcvlo:7700005:000:673
Nf-From: hpcvlo!craig    Mar  7 11:31:00 1985

I have biopace (or biorace for us fast types) chain rings on my mountain
bike (I think 28-3x-48) and 180mm cranks (on a 19" frame!).  The difference
from round rings is considerable.  Good: for grinding a big gear or in general
using low revs, biopace is hot.  Not so hot:  feel strange when spinning,
sometimes it can be hard to get traction when in the small ring and climbing
mud (the power deliverly has spurts which will cause the rear wheel to break
loose under these conditions).  Also, in order to get decent shifting 
(mine shift fine) the rings are more round as they get bigger - the 48 
does not feel much different than a round ring.
			Craig ...!hp-pcd!craig