Re: [CR]No more DeRosas : they all broke ?!?!

(Example: History:Norris Lockley)

Date: Sat, 06 Nov 2004 16:05:27 -0500
From: "Joe Bender-Zanoni" <joebz@optonline.net>
Subject: Re: [CR]No more DeRosas : they all broke ?!?!
To: OROBOYZ@aol.com, gillies@cs.ubc.ca, classicrendezvous@bikelist.org
References: <c1.4ab9a8ee.2ebe963a@aol.com>


I would point out that this test assumes all the loads are applied as if climbing out of the saddle. And then you need to assume the test actually simulates those loads. I suppose if you want a bike optimized for riding out of the saddle all the time- this is your test.

As for me I'm not much concerned about head tube failures in steel frames.

Joe Bender-Zanoni
Great Notch, NJ


----- Original Message -----
From: OROBOYZ@aol.com
To: gillies@cs.ubc.ca
Sent: Saturday, November 06, 2004 4:03 PM
Subject: Re: [CR]No more DeRosas : they all broke ?!?!



> In a message dated 11/6/2004 2:41:45 PM Eastern Standard Time,
> gillies@cs.ubc.ca writes:
>
> << http://www.damonrinard.com/EFBe/frame_fatigue_test.htm
>
> Quite possibly - after all, the DeRosa in this fatigue-limit test
> performed the worst out of 20 bikes !! And will we be stuck with TREK
> OCLV frames for a long, long, long time because apparently they are
> balanced in a way that allows them to survive many fatigue cycles ?? >>
>
> Talking about most of these bikes is off topic but this test is at least
> questionable and at worst bologna.
> It is ironic that in real world use, Trek OCLV, Cannondale and Principia are
> KNOWN to break! Of all the makes listed, these guys have an acknowledged
> history!
> And then the DeRosa and other lugged bike broke in the exact same place... A
> place I have never seen a bike break in over 30 years in the biz! That really
> seems strange. I see that they don't show how they held the front end of the
> frames in their stress testing machine. Hmmmm.
> I urge anyone concerned about their DeRosas to abandon use immediately and
> send them to me.
>
> Dale Brown
> Greensboro, NC