Re: [CR] Geometry - and a whole lot more

From: "R.S. Broderick" <rsb000@hotmail.com>
To: <classicrendezvous@bikelist.org>
Date: Sun, 12 Apr 2009 17:08:13 -0500
In-Reply-To: <7167B51B6CB844A187CBAD6BA6783E4C@workhorse>
Thread-Index: Acm7iMyjbQh3WmSuTCq2aGqmyROQtwAK6KAg
Cc: wtgrantham@comcast.net
Subject: Re: [CR] Geometry - and a whole lot more

Todd,

I am going to take this opportunity to remind the regulars who monitor the CR List (...or in the case of those newer members, bring to their attention perhaps for the very first time), that a considerable library of vintage cycling material has been dutifully digitized for your reading pleasure. Said information has been grouped into four distinct categories and posted to WoolJersey as follows:

http://www.wooljersey.com/gallery/broderir/Catalogs-Posters/ "Catalogs / Brochures / Posters / Decals / Ephemera" – this high level album serves as the digital home to a collection of various vintage cycling related materials, primarily catalogs and brochures, all grouped into manufacturer specific sub-albums. The focus here would be component and/or accessories manufacturers and within each of the manufacturer sub-albums, pertinent material is presented in chronological order. Generally speaking, you will find catalogs, brochures, and technical manuals, but I have also included the occasional tech article as well as some advertising copy in select instances (...there is LOTS more to come sometime after our move back to the West Coast).

http://www.wooljersey.com/gallery/broderir/Catalogs-Posters/Maintenance -Re pair-Manuals/ "Maintenance / Repair / Miscellaneous Technical Information" – this album primarily contains technically oriented articles either detailing with the "how to" of proper maintenance or providing descriptive specifics pertinent to vintage components available at the time of publication. I have not included manufacturer specific articles (...Campagnolo, Simplex, Zeus, etc.) here inasmuch as my intention is to place those particular write ups into those albums dedicated to a the manufacturer in question, so the articles posted here either cover multiple entities or have more generic application. I have also included copies of the Sutherland’s Handbook For Bicycle Mechanics, volumes 1, 2, and 3 (...although these are password protected at this time because I do not yet have the express written consent of the legitimate copyright holder for their republication on the internet under terms of the Fair Use Doctrine).

http://www.wooljersey.com/gallery/broderir/Catalogs-Posters/Road-Tests- Rev iews/ "Road Tests / Reviews" – as the title implies, this album chronicles those bicycle road tests and reviews published over the years as well as interviews and articles specific to frame builders / manufacturers. Said articles are posted chronologically by date of their original publication and without regard to manufacturer.

http://www.wooljersey.com/gallery/broderir/Catalogs-Posters/Trade-Shows -Ex pos/ "Trade Shows / Expos" – this album contains published reports from the likes of the Paris, Milan, and New York City bicycle shows. My primary reason for including these accounts is that they serve as an excellent guide to determine exactly when particular items were introduced to the public inasmuch as most of these shows were used to debut new components and ideas.

Now with respect to your specific questions, the first of those about frame geometry is addressed to a great degree in the following two articles which should serve as a suitable primer on the subject (...most especially the second):

http://www.wooljersey.com/gallery/broderir/Catalogs-Posters/Maintenance -Re pair-Manuals/Bicycling-1972-05-06/

http://www.wooljersey.com/gallery/broderir/Catalogs-Posters/Maintenance -Re pair-Manuals/Bicycling-1980-07/

And as for your second question regarding the prospects of building your own lugged steel frame, I might suggest the following articles for topical background reading:

http://www.wooljersey.com/gallery/broderir/Catalogs-Posters/Maintenance -Re pair-Manuals/Bicycling-1976-06-1977-01/

http://www.wooljersey.com/gallery/broderir/Catalogs-Posters/Maintenance -Re pair-Manuals/Bike-World-1977-03/

http://www.wooljersey.com/gallery/broderir/Catalogs-Posters/Maintenance -Re pair-Manuals/Bike-World-1979-03-A/

Regards,

Robert "it's like déjà vu all over again" Broderick ..the "Frozen Flatlands" of South Dakota Sioux Falls, USA

-----Original Message----- From: classicrendezvous-bounces@bikelist.org [mailto:classicrendezvous-bounces@bikelist.org] On Behalf Of Todd Grantham Sent: Sunday, April 12, 2009 11:11 AM To: classicrendezvous@bikelist.org Subject: [CR] Geometry

I have 2 separate questions but am submitting them together

1. What is meant by the term "relaxed geometry" used in many manufacturers descriptions. I'm sure it refers to angles and maybe wheelbase, but can you tell me what range is considered "relaxed" and what is considered "unrelaxed".

2. A few weeks back one of our list member sent pics of a bike he built and brazed while attending class in Oregon. I would like to learn lugged

frame construction and build one for myself someday, but probably can't

leave my life for 2 weeks to go there and learn. What would be the best way for me to proceed?

Todd Grantham Fort Wayne IN USA

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