I asked Colin about his single speed frame design with a curved seat tube that places the seat back towards the rear axle. Much more than a normal frame Colin Laing reply is below. Ask for a photo of ths frame if interested. ''----- Original Message ----- From: Colin Laing To: Charles Nighbor Sent: Wednesday, January 07, 2009 2:32 PM Subject: Re: A question on one of your frames Hello Charles,
The idea is to sit almost above the back axle , mainly for time trials or hill climbs, The curved tube was a Jack Taylor feature, copied from Claud Butler.
I have done loads of these as single speeds and also for the back of tandems,,,thereby giving more room for the stoker.
I know the angles look wierd but actually the seat to handlebars and the seat to bottom bracket are quite usual....indeed, when drawing the thing up from a riders measurements,I use a straight line for the seat tube then super-impose the curved tube onto the drawing...,hope this makes sense to you...the ride is actually quite a dream....thanks for the note...COLIN
--- On Wed, 1/7/09, Charles Nighbor <cnighbor1@comcast.net> wrote:
From: Charles Nighbor <cnighbor1@comcast.net> Subject: A question on one of your frames To: "colin Laing" <colin_laing@yahoo.com>, "Dale CR Brown" <oroboyz@aol.com> Date: Wednesday, January 7, 2009, 9:23 AM
Colin What is the design thought being this frame design? I can see the seat is positioned way behind the bottom bracket. Was this a criterion frame? Thanks Charles Nighbor, Architect''
Charles Nighbor
Walnut Creek, CA USA