Re: [CR]was:Twisted in Missoula/now: rim stiffness

(Example: Framebuilding:Tubing:Falck)

From: <NortonMarg@aol.com>
Date: Wed, 17 Jul 2002 13:23:49 EDT
Subject: Re: [CR]was:Twisted in Missoula/now: rim stiffness
To: classicrendezvous@bikelist.org


In a message dated 7/17/02 8:35:53 AM Pacific Daylight Time, oktoski@hotmail.com writes:

<< Sam Braxton, framebuilder, et al) in Missoula, Montana
   would tell about timed wheel building races. I think they claimed
   a time of around 3 minutes from a pile of spokes, rim and
   hub to a rideable wheel. >> Hard to imagine they could properly lube the threads and the nipple seat in that time, much less spoke it. Of course if they were having a little contest to get "bragging rights" to how fat they could put a wheel together, that's one thing, but I don't buy they could build a top quality wheel in that time. My two cents on rims: Rims come in all variations of rigidity, from noodle to extremely rigid and they ride differently. I'm a sew up guy, and when aero sew ups (shallow V rims) first came out, I noticed a BIG difference in felt road shock through the handlebars. Clinchers may be another matter, from an engineering standpoint, the walls that hold the tire on act as stiffening flanges. Add a modern deep aero V section to that and you get a darn stiff rim. At the noodle end of the spectrum, remember those 200 gram gold colored Nisi rims? They don't hold much tension, you HAVE to spoke them loose and you cannot make up a lack of rim strength by just adding spokes. At 36, they were flimsy. Strong rims, that will hold a lot of tension, are a different animal, but I still contend you can feel a difference between a deep V aero rim and a traditional sew up rim. Stevan Thomas Alameda, CA