Re: [CR] Raleigh Professional

(Example: Component Manufacturers:Campagnolo)

From: "Norm and Val Lafleur" <nvlafleur@verizon.net>
To: "Cheung, Doland" <CheungD@bv.com>, <classicrendezvous@bikelist.org>
References: <2D8A426FC4FC0E4A9E6038E8A4F6D3632E1AFB0C@tsmc-mail-16.na.bvcorp.net>
In-Reply-To: <2D8A426FC4FC0E4A9E6038E8A4F6D3632E1AFB0C@tsmc-mail-16.na.bvcorp.net>
Date: Mon, 23 Feb 2009 19:56:40 -0500
Subject: Re: [CR] Raleigh Professional


I've been trying to measure my frames to see If I can come up with explanations for differences in ride characteristics. Included in my data are a 73 Raleigh Competition and a 74 Professional. Here is the data: (cm, c-t-c) Pro: st 55.5, tt 56, head angle 73, seat angle 75, BB height 27. Competition: st 55.5, tt 56.5, head angle 71, seat angle 73, BB height 25.5.

Angle measurements were taken with a digital angle gauge. Hope this helps the discussion. Refining the measurement technique has been tricky so if the data looks suspect let me know what you think.

Norm Lafleur
Ashfield, Ma.
USA


----- Original Message -----
From: "Cheung, Doland"
To: classicrendezvous@bikelist.org
Sent: Monday, February 23, 2009 7:16 PM
Subject: Re: [CR] Raleigh Professional


I'm not so sure about the short top tube. I wouldn't be surprised if there is a geometry difference over the years. I have a Mark V and IIRC, for it s size, it has a top tube length similar to my more modern bikes. In the p ast, I've measured it to be 51cm c-t seat tube with a 54cm c-c top tube.

I don't know about the head tube angle, as my Pro doesn't feel overly quick up front, but I suspect the seat tube angle is on the steeper end for it's size, something more than 74*.

Doland Cheung LA, CA

-----Original Message----- From: classicrendezvous-bounces@bikelist.org [mailto:classicrendezvous-boun ces@bikelist.org] On Behalf Of drstuarts@aol.com Sent: Monday, February 23, 2009 2:52 PM To: classicrendezvous@bikelist.org Subject: [CR] Raleigh Professional

Dear Louis:

As I recall, Raleigh Professionals had a very short top tube, and a relativ e ly step head tube angle. To provide front wheel clearance from the down tub e , given these design considerations, one would have to elevate the bottom b r acket. This would increase the height of the head tube.

Stuart Stiffey

Woodstock, NY