Plating of metals and the possible problems of hydrogen embrittlement is
certainly a problem with high grade bolts and nuts (solved by baking) I
don't see that mild steel and castings not subjected to the tensile stresses
of the former are of the same concern. Cadmium and zinc plating shouldn't
be a problem.
Tom Kubler
----- Original Message -----
From: "Michael Frank" <mfrank@westnet.com>
To: <vintage-race@autox.team.net>
Sent: Tuesday, March 28, 2000 7:28 PM
Subject: Re: Powder Coating Suspension
> What's the thinking on cadmium? The control arms on E-Types were cad
> plated, and I'm about to redo mine. Is this safe?
>
>
> Mike Frank
>
> At 03:52 PM 03/28/2000 +0000, you wrote:
> >If you are going to paint any stressed suspension parts I'd paint them
light
> >gray so you can easily see fine cracks. This is the approach used in WWII
> >aircraft and adopted by Lotus and others in the 1950's and 60's. It
should be
> >more appropriate for Vintage racers than a "Rod & Custom" chrome look.
> >
> >Jeremy Fergusson
> >
> >Jimmysmth@aol.com wrote:
> >
> >> I personally would not paint, powder coat, or electroplate any stressed
> >> suspension parts on a racecar. I want to be able to detect a crack
using
> >> magnaflux, dye penetrant, or visual inspection. The coatings may mask
> small
> >> cracks. Another thing I would worry about would be hydrogen
> embrittlement of
> >> plated parts. Just my $.02.
> >>
> >> Jim
> >
|