[DeTomaso] Does anybody know anyone who can repair bent or cracked Magnesium wheels

Fri May 15 17:00:47 EDT 2015

Yup- all that is true. The welding of bulk mag depends on its extremely high thermal conduction wicking heat from the molten weld puddle to the rest of the piece, and the use of expensive inert gasses over the molten area to suppress ignition. That last is also how casting of mag is done. For laughs, I once published an ad in the Newsletter from the '50s for hot-rod cast-magnesium pistons! The company said they were so light your flathead Ford could rev to the moon. They weren't in business very long....

Bulk mag thermally expands so much, my certified welder friend says it looks like the part is trying to crawl away from the TIG-torch. He clamps parts down to a steel weld bench to stop most of this.

-----Original Message-----
From: Boyd Casey <boyd411 at gmail.com>
To: Ed Mendez <edducati at mac.com>
Cc: Jack DeRyke <JDeRyke at aol.com>; detomaso <detomaso at poca.com>
Sent: Fri, May 15, 2015 8:17 am
Subject: Re: [DeTomaso] Does anybody know anyone who can repair bent or cracked Magnesium wheels

I worked with magnesium in the lab when I was in college. The problem with trying to weld it is when it   gets  
 heated ti high temps it ignites. It is what is used in military night time illumination flares. It burns extremely hat  and can't be put out using conventional fire    suppression means , It will burn in an atmosphere of Nitrogen,Carbon Dioxide, and under water. It must be covered with sand to deprive it of any atmosphere. It can burn at temps as high as 5610 degrees F. So this is not something that you want to fool around with.   
Check this sight or j    ust google welding and repairing     Campagnolo          magnesium wheel. Good Luck , Your going to need it!   

Boyd  

On Thu, May 14, 2015 at 2:12 AM, Ed Mendez    <edducati at mac.com> wrote:   

   Thank you Jack, I'll pass it on.    

    On OR, at 13:16, [1]JDeRyke at aol.com wrote:

    Most shops that advertise the repair of alloy wheels are talking about
    aluminum and will not touch magnesium. Some -especially in CA- are
    worried about liability. A couple of the Pantera vendors (Larry Stock's
    shop is one) have it done by outside specialists. Welding,
    heat-treating/annealing and maybe X-ray inspection should accompany any
    such repairs. It goes without saying that a U.S. certified welder
    should be involved. Lots of people can TIG-weld including me, but not
    all (again including me) are competent to weld-repair a magnesium road
    or race wheel. The displayed wheel is from a Mangusta so once its
    verified to actually be magnesium- some are aluminum- it will likely be
    worth the high cost of repair due to its rarity. I've seen mistakes
    made- someone once brought me a cracked magnesium formula car wheel
    that had been TIG-welded with aluminum, which destroyed any chance of
    repair. Others are simply un-fixable. Pro crew chiefs often will not
    touch a repaired wheel.
    -----Original Message-----
        From: Ed Mendez <[2]edducati at mac.com>
    To: DeTomaso Forum <[3]detomaso at poca.com>
    Sent: Tue, May 12, 2015 11:25 pm
    Subject: [DeTomaso] Does anybody know anyone who can repair bent or
    cracked Magnesium wheels
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-------------- next part --------------
   Yup- all that is true. The welding of bulk mag depends on its extremely
   high thermal conduction wicking heat from the molten weld puddle to the
   rest of the piece, and the use of expensive inert gasses over the
   molten area to suppress ignition. That last is also how casting of mag
   is done. For laughs, I once published an ad in the Newsletter from the
   '50s for hot-rod cast-magnesium pistons! The company said they were so
   light your flathead Ford could rev to the moon. They weren't in
   business very long....
   Bulk mag thermally expands so much, my certified welder friend says it
   looks like the part is trying to crawl away from the TIG-torch. He
   clamps parts down to a steel weld bench to stop most of this.

   -----Original Message-----
   From: Boyd Casey <boyd411 at gmail.com>
   To: Ed Mendez <edducati at mac.com>
   Cc: Jack DeRyke <JDeRyke at aol.com>; detomaso <detomaso at poca.com>
   Sent: Fri, May 15, 2015 8:17 am
   Subject: Re: [DeTomaso] Does anybody know anyone who can repair bent or
   cracked Magnesium wheels
   I worked with magnesium in the lab when I was in college. The problem
   with trying to weld it is when it gets
   heated ti high temps it ignites. It is what is used in military night
   time illumination flares. It burns extremely hat  and can't be put out
   using conventional fire suppression means , It will burn in an
   atmosphere of Nitrogen,Carbon Dioxide, and under water. It must be
   covered with sand to deprive it of any atmosphere. It can burn at temps
   as high as 5610 degrees F. So this is not something that you want to
   fool around with.
   Check this sight or j ust google welding and repairing  Campagnolo
   magnesium wheel. Good Luck , Your going to need it!
   Boyd
   On Thu, May 14, 2015 at 2:12 AM, Ed Mendez <[1]edducati at mac.com> wrote:

        Thank you Jack, I'll pass it on.
        On OR, at 13:16, [1][2]JDeRyke at aol.com wrote:
        Most shops that advertise the repair of alloy wheels are talking
     about
        aluminum and will not touch magnesium. Some -especially in CA-
     are
        worried about liability. A couple of the Pantera vendors (Larry
     Stock's
        shop is one) have it done by outside specialists. Welding,
        heat-treating/annealing and maybe X-ray inspection should
     accompany any
        such repairs. It goes without saying that a U.S. certified welder
        should be involved. Lots of people can TIG-weld including me, but
     not
        all (again including me) are competent to weld-repair a magnesium
     road
        or race wheel. The displayed wheel is from a Mangusta so once its
        verified to actually be magnesium- some are aluminum- it will
     likely be
        worth the high cost of repair due to its rarity. I've seen
     mistakes
        made- someone once brought me a cracked magnesium formula car
     wheel
        that had been TIG-welded with aluminum, which destroyed any
     chance of
        repair. Others are simply un-fixable. Pro crew chiefs often will
     not
        touch a repaired wheel.
        -----Original Message-----
        From: Ed Mendez <[2][3]edducati at mac.com>
        To: DeTomaso Forum <[3][4]detomaso at poca.com>
        Sent: Tue, May 12, 2015 11:25 pm
        Subject: [DeTomaso] Does anybody know anyone who can repair bent
     or
        cracked Magnesium wheels
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   8. mailto:edducati at mac.com
   9. mailto:detomaso at poca.com
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