Re: [CR] Quad Butted Tubing and Stays/Blades - Revisited

(Example: Racing)

Date: Tue, 1 Sep 2009 01:51:21 -0700
From: "verktyg" <verktyg@aol.com>
To: Andrew R Stewart <onetenth@earthlink.net>, <classicrendezvous@bikelist.org>
References: <mailman.15618.1251125465.344.classicrendezvous@bikelist.org> <B58DB0B7DCA24FFB9CFEF416785E4BD9@ARSPC>
In-Reply-To:
Subject: Re: [CR] Quad Butted Tubing and Stays/Blades - Revisited


Andrew, et al,

Here's as good an explanation about single, double, triple and quad butted tubing as I seen. Methinks that all the brouhaha about triple and quad tubing was mostly marketing hype.

http://www.desperadocycles.com/The_Lowdown_On_Tubing/About_Steel_Tubing_page3.htm

I stopped weighing my bikes years ago. If I knew how much they weighed I'd be thinking about it instead of enjoying the ride. If I switched to a an aluminum, titanium of carbon fiber reinforced plastic bike, I wouldn't have an excuse for being slow!

Chas. Colerich Oakland, CA USA

Andrew R Stewart wrote:

All- My understanding is that the term "butt" refers to a change of thickness. So the classic seat tube has two different wall thicknesses and is "single butted". A "double butted" tube could have three different wall thicknesses, or two as classic 531 did. The two transitions is what made it double butted", not what the resulting three sections' walls are. A "Triple butted" tube would have a third transition to make four distinct sections, of what ever wall the manufacture wanted.