DeTomaso Mailing List: April 1997, Message #130
     



From: Andy Poling <andy@realbig.com>

Subject: Re: Benefits of Campagnolo wheels

Date: Wed, 16 Apr 1997 20:07:19 -0500 (EST)



On Wed, 16 Apr 1997, Charles F Engles Jr. wrote:

[...]

> There is a way to check the Campys structural integrity and

> that is the Zyglo method.  Its primarily used in aviation.  It involves

> taking the wheel and heating it up.  Then its painted with the zyglo

> compound and allowed to cool.  Its washed and then placed under UV light.

> Any hairline cracks expand with the heat, fill with zyglo and are revealed

> with the UV.



That's cool!  Does it still work when they've been powder-coated or

painted?  Can you repair cracks, or is a cracked wheel toast?





> 	Seems like I recently read in this forum, that the flammability of

> magnesium wheels was greatly overrated.  As I recall the typical

> temperatures generated in a normal gasoline powered car crash and fire are

> too low to ignite magnesium.



You're right - it takes some pretty high temperatures (or friction, like

hitting a retaining wall a glancing blow).  I just had to consider that the

Magnesium might make a bad situation worse.  Not probable... just possible.



Please don't think that I want everybody to toss their Campy wheels.  I'm

keeping mine with the Euro-TA's mounted on 'em - I'll just not be using them

for track events and the like.



I think it's pretty cool that they're real Magnesium "mags"...



-Andy



72 Pantera: power             91 Miata: quickness              96 A4Q: traction

84 RZ350: all the above