Re: [CR]RE: the other...chainring

(Example: Racing:Jean Robic)

From: "Peter Jon White" <lists@PeterWhiteCycles.com>
To: <NortonMarg@aol.com>
References: <1aa.1e0a6a58.2d127f4a@aol.com>
Subject: Re: [CR]RE: the other...chainring
Date: Wed, 17 Dec 2003 23:14:12 -0500
cc: classicrendezvous@bikelist.org

> Hi Chris,
> You can stiffen the crank up a bit by useing a NR inner ring with a SR outer
> rings. You will get noticably less deflection.
> Stevan Thomas

Sorry, but there is absolutely no truth to this. Although this myth has been around since Super Record rings were introduced, there is neither any empirical evidence that this is true, nor any reason why it should be true.

Any deflection you see in chainrings is from flexing of the seat tube between the front derailleur and the BB shell, and flexing of the bottom bracket axle. There are no lateral forces on chainrings, except during shifts.

Peter Jon White
Peter White Cycles
24 Hall Rd.
Hillsborough, NH 03244
603 478 0900 Phone
603 478 0902 Phax
http://www.PeterWhiteCycles.com