[CR]Re: CORRECTION Lambert Death Fork - Actual data point

Example: Production Builders:Peugeot
From: "David Van Hook" <dvanhook@yahoo.com>
To: Dan Kasha <kasha.lists@cox.net>
Cc: Classic Rendezvous <classicrendezvous@bikelist.org>
In-Reply-To: <000d01c29d3c$f8057120$f8800944@ri.cox.net>
Subject: [CR]Re: CORRECTION Lambert Death Fork - Actual data point
Date: Fri, 6 Dec 2002 07:48:10 -0800 (PST)

Dan (and all who have been participating in this 'death fork' discussion either on or off list) I have been informed that I am UN-INFORMED! According to a metals 'experts' (on and off) the list, all others things being equal, forged aluminum alloy parts are far superior to cast aluminum for high stress applications (apparently including bicycle forks). Forged aluminum alloy can withstand loads anywhere from 40% to almost 100% higher without failing. And, when they do fail, forged parts tend to deform first, whereas cast aluminum shatters because the forging process makes the aluminum up to 600% more ductile. Thus a cast aluminum fork will shatter when its yield limits are exceeded. Cranks are forged...the Lambert 'death fork' is cast. I stand corrected/educated/informed. Now I'll shut-up! Dave Van Hook Hershey PA