Re: [CR] Rene Herse Ligtweight Record Bike

(Example: Framebuilders:Alex Singer)

From: "Jim Merz" <jmerz@schat.com>
To: 'M-gineering' <info@m-gineering.nl>
References: <BAY141-W6DF904CE80941DDF9809E8CBE0@phx.gbl> <507532.7851.qm@web82208.mail.mud.yahoo.com> <000c01c98947$07c40520$174c0f60$@com> <498DC568.2020706@m-gineering.nl>
In-Reply-To: <498DC568.2020706@m-gineering.nl>
Date: Sat, 7 Feb 2009 09:31:47 -0800
Thread-Index: AcmJSbBJeBo59nOoTMqOpi1NgXpgbwAACsbg
Cc: Classicrendezvous@bikelist.org
Subject: Re: [CR] Rene Herse Ligtweight Record Bike


Ok, but how about the argument?

Jim Merz Big Sur CA

-----Original Message----- From: classicrendezvous-bounces@bikelist.org [mailto:classicrendezvous-bounces@bikelist.org] On Behalf Of M-gineering Sent: Saturday, February 07, 2009 9:31 AM Cc: Classicrendezvous@bikelist.org Subject: Re: [CR] Rene Herse Ligtweight Record Bike

Jim Merz wrote: Steel frames have a limit on how thin the tubing wall can
> be. I went into this in one of my other rants a few weeks ago. The ratio of
> tube diameter to wall thickness should not go over 50/1.

nice rule of thumb for mild steel, 953 goes to 100:1 ;)

-- mvg

Marten Gerritsen
Kiel Windeweer
Netherlands