Re: [CR]Was: downtube & top tube replacement.. Now, cold setting...

(Example: Framebuilders:Jack Taylor)

Date: Wed, 29 Jun 2005 20:19:35 -0500
To: Classicrendezvous@bikelist.org
From: "Troy Courtney" <troy@cccycles.com>
Subject: Re: [CR]Was: downtube & top tube replacement.. Now, cold setting...
In-Reply-To: <8C74B04D96B5AD7-95C-17ABF@MBLK-M38.sysops.aol.com>
References: <20050629022638.26789.qmail@web50007.mail.yahoo.com> <002c01c57cc2$b98ca8b0$2f01a8c0@t1s9z1> <8C74AEBF4B41892-95C-16615@MBLK-M38.sysops.aol.com> <42C2E68D.2010107@new.rr.com>


The second frame I built was for my wife. I used the TrueTemper RCX2 heat treated set. When I completes the frame the rear drops had closed up and were offset by about 5 mm on one side and 2 mm on the other. Not huge, but needed to be corrected. Locked down the BB shell and started to crank on the stays. The one that was 2 mm out came back in with some effort but not too bad. Likewise, the one that was 5 mm out moved about 2 mm relatively easily. But it would not budge for the remaining 3 mm. The stay would just spring back to where it had started. On my last attempt I gave it nice hard pull...then "SNAP", the stay folded in two.

The heat treated tubes are tough.

Troy

Courtney Custom Cycles Geneva, IL http://www.cccycles.com

At 04:01 PM 6/29/2005, oroboyz@aol.com wrote:
><< Executive summary: Reynolds wasn't kidding. Rather than taking a cold
>set, 753 resists completely until a critical threshold, then fails
>completely. >>
>
>Ha! That truly is a unique experience..
>
>There WAS a local builder named, Chris Wittman made frames under the
>"Slim" label (don't ask)
>
> He called me up one day asking to come to my home work shop (Cirque
> folks know it well) and have me assist him with my alignment table on an
> Columbus EL-OS frame that he"had built a little off." Oh yeah, it was a
> little off alright!
>
>Anyway, I let him do the brute force bit after I had clamped it in and
>realized how far off it really was... He grunted and heaved and jumped up
>using his whole body to try to bend it... Then out of the blue, it went
>POW! Totally twisted into a wrinkle potato chip! Awesome! But we both were
>amazed how much oomph he had to use.. Steel is real, baby!
>
>
>
>Dale Brown
>cycles de ORO, Inc
>1410 Mill Street
>Greensboro, NC 27408 USA
>336-274-5959
>www.cyclesdeoro.com
>www.classicrendezvous.com
>Giant, Specialized, Bianchi, Felt, Orbea, Litespeed, Kuota, Argon 18,
>Colnago, Landshark, Townie and other exotica.
>Member, board of directors, National Bicycle Dealers Association
>
>-----Original Message-----
>From: John Thompson <JohnThompson@new.rr.com>
>To: Classicrendezvous@bikelist.org
>Sent: Wed, 29 Jun 2005 13:21:01 -0500
>Subject: Re: [CR]Frame Repair/downtube & top tube replacement.....?s
>
> oroboyz@aol.com wrote:
>
>>Steve, that reminds me that you CAN get away with amazing stuff with
>>steel frames.
>> A former shop employee of mine & racer girl (Vikki Coffey as many of
>>you NC boys will remember.. fast rider, gorgeous and smart) endo-ed
>her
>>DeRosa and Ijacked it back out... she rode it another year and sold it
>>to Rick Dedman in Southern Pines (an attorney no less!) who rode it
>>another 5 or 6 years! Astounding!
>
>Some steel frames, anyway. I wouldn't try that with a 753 frame!
>
>We had more than a couple crashed 753 frames returned to us at Trek;
>we'd just build a new frame as a replacement. Reynolds did not recommend
>cold-setting 753, so we decided to see what would happen using these
>damaged frames as crash-test dummies. Executive summary: Reynolds wasn't
>kidding. Rather than taking a cold set, 753 resists completely until a
>critical threshold, then fails completely.
>
>--
>John (john@os2.dhs.org)
>Appleton WI USA