Re: [CR] Why no Quick Releases on Track bikes (veering further OT)


Example: Books
In-Reply-To: <p0624086ac266e616679a@[10.0.1.47]>
From: "Jerry Prigmore" <robinjer@hotmail.com>
To: CaptBike@sheldonbrown.com, jerrymoos@sbcglobal.net, classicrendezvous@bikelist.org
Subject: Re: [CR] Why no Quick Releases on Track bikes (veering further OT)
Date: Wed, 09 May 2007 08:13:05 -0700


Yes, I still maintain that there is a whole lot of mechanical advantage going on with enclosed-cam QRs and mountain-goat gears, I don't care how big track sprinters' thighs are...

Ol' Tullio knew a thing or two way back then, and Sheldon deftly explained why the exposed cam QR was not a better mousetrap.
>From: Sheldon Brown <CaptBike@sheldonbrown.com>
>To: Jerome & Elizabeth Moos <jerrymoos@sbcglobal.net>, Jerry Prigmore
><robinjer@hotmail.com>, classicrendezvous@bikelist.org
>Subject: Re: [CR] Why no Quick Releases on Track bikes (veering further OT)
>Date: Tue, 8 May 2007 22:51:51 -0400
>
>Jerry Moos wrote:
>
>>I am sure he will correct me if I misquote him, but I believe Sheldon has
>>often taken the position that all this talk about the tremendously higher
>>forces on track bikes is a lot of foolishness, a combination of vodoo
>>science and trackie macho egos. I don't agree with Sheldon on everything,
>>but I agree on this.
>
>My theory is that this prohibition actually predates the invention of the
>QR!
>
>Before QRs, the tool-free alternative was wing nuts. Wing nuts could
>present a hazard to riders in a crash because of how they project. It is my
>belief that tracks instituted rules requiring plain nuts to prevent the use
>of wing nuts.
>
>When the QR was invented, it was not allowed because plain nuts were
>required.
>
>Galen Pewtherer wrote:
>
>>I can only speak from the experience of trying to ride a fixed gear on
>>the street with QR's (never tried it on the track); they slip, no
>>matter hard you crank them down.
>
>That has not been my experience. I wonder if you were using good quality
>skewers? There are an awful lot of junk skewers out there.
>
>See my article on this topic: http://sheldonbrown.com/qr
>
>Sheldon "Enclosed Cam" Brown
>+-------------------------------------------+
>| Good judgment comes from experience, |
>| and experience comes from bad judgment. |
>| --Fred Brook |
>+-------------------------------------------+
>--
> Harris Cyclery, West Newton, Massachusetts
> Phone 617-244-9772 FAX 617-244-1041
> http://harriscyclery.com
> Hard-to-find parts shipped Worldwide
> http://captainbike.com
> Useful articles about bicycles and cycling
> http://sheldonbrown.com