That brazing rod is actually Zinc or at least what I sell is.I did try to use it on a crankarm but I could not get it to stay in the threads.Who knows how it would tap. We do have a very sophisticated Alloy rod(its actually an Arc rod) that can be used as a brazing rod . It can be used with Mapp gas(not propane) but as thick as a crankarm is you could never get enough heat in it. Another way might be Mig or Tig and I will give that a try. Once this is all done those Eldi Repairs look better and better. BOB FREITAS jack of all trades mobile in PETALUMA,CA USA
oroboyz@aol.com wrote: << Anyone tried floating more material into the hole and just retapping?(Aluminum brazing?) >>
I haven't seen the ads lately but does anyone remeber those low temperature aluminum like repair sticks that were on TV and at various public expos a few years back? I imagined that that stuff might serve this fill-in-and-retap role.
But that stuff looked too good to be true so I always presumed there was some not-so-hot aspect that doesn't appear in the persuasive presentations.
Anyone try that stuff? (I have deja vue and think we may have talked about this before...)
OTOH, the Eldi repair process seems to provide a very good permanent solution...
Dale Brown cycles de ORO, Inc. 1410 Mill Street Greensboro, North Carolina 27408 USA 336.274.5959 http://www.cyclesdeoro.com http://www.classicrendezvous.com
-----Original Message----- From: freitas1@pacbell.net To: classicrendezvous@bikelist.org Sent: Mon, 7 May 2007 1:29 AM Subject: [CR]re:Pedal Thread repair
Spring type thread repairs (Helicoil, Red dot etc) are common and looking at that link are quite inexpensive. Problem is the material they are made out of is on the soft side and the fastener (or in this case the pedal) pulls directly against the thread insert. During the installation you are enlarging the hole which in this use weakens the crank arm. Is anyone familiar with the Eldi repair ,I like the idea of the solid bushing but is the wall thickness more than 1 mm ? Advantage a bushing repair has is that your pedal is not pulling against the thread and the bushing itself adds strength to the arm. Anyone tried floating more material into the hole and just retapping?(Aluminum brazing?) BOB FREITAS MILL VALLEY, CA USA disclaimer: I sell Helicoil, Red dot ,Keensert and Timesert
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