Hi everyone,
As to powder coating, I had a rusty (but sandblasted) car-hauling
trailer powder coated, thinking the polymer would fill in the rust pits
and give me a beautiful rust resistant result. But, I was surprised
that the polymer adhered best to the smooth new metal, giving a thick
glossy coat, but gave very poor coverage of the rough, rust pitted
spots. Even worse, the valleys where the cross members and side rails
met were coated the least !!
Apparently, the electrostatic charges that draw the powdered metal to
the heated metal surface are strongest where the metal is smooth and
where the metal extends out from the main structure. Although I have
not powder coated a Morgan chassis, I would be concerned that the
junctions between the cross members and the chassis side rails, and the
other junctions, etc., would get very poor coverage and be vulnerable to
rust almost immediately.
Also, the powder coating is dissolved by products like Loctite.
John Bigler
'48 Sr I, '57 Sr II, '59 4/4 w/Devin body
webster wrote:
> Hi Gang,
>
> I have been following this chassis painting thread and wanted to
> throw in my 2 cents. I was led to believe that one should not use
> a paint like Por 15 or the one Harold suggested, because a Morgan
> chassis 'flexes' as part of it's handling characteristics, and
> these paints will ultimately crack allowing water to penetrate, or
> flake off. This is why the factory ultimately went with a
> 'galvanizing' process, because it was the only thing they found
> was unaffected by the flexing.
>
> I am soon to be in a similar situation myself here in the states,
> I was going to look into powder coating, I don't know it the fact
> that it is electronically adhered to the chassis will help prevent
> the cracking over time.
>
> Regards,
>
> Jeff Webster
> Buy Classic Cars from America!
> Http://www.BuyClassicCars.com
>
> > -----Original Message-----
> > From: owner-morgans@autox.team.net
> > [mailto:owner-morgans@autox.team.net]On Behalf Of
> > Harald Sakshaug
> > Sent: Monday, December 04, 2000 5:01 AM
> > To: morgans@autox.team.net
> > Subject: SV: [Chassis Painting]
> >
> >
> > I use an Offshore paint called Jotamastic 87. The stuff
> > is used on Norwegian
> > Offshore installations. The stuff is painted onto bare
> > metal and dropped
> > into the ocean. This stuff is very poisonous and fresh
> > air mask is required,
> > but it is so hard one need to use some kind of grinding
> > tool to get it off.
> > The paint contains zink, and is self repairing (if it
> > is at all possible to
> > scratch this paint ;).
> >
> > The paint is a two component and hardens a 100%. Rock
> > hard and in different
> > colours. The paint can be coated with 2K acrylic
> > carpaint without problems,
> > and it looks very good having the cars original shiny
> > colours under the
> > wings on autoshows !
> >
> > I would presume it is difficult to sand blast this
> > paint off the car, and it
> > must be applied with a hight pressure spray gun, or by
> > a paint brush. I
> > usually paint it with a brush, and dip the brush on the
> > surfaces creating a
> > "undercoat lookalike" surface. And if you have "ugly"
> > looking welds (like
> > me), the paint will cover them perfectly... ;)
> >
> > The paint cost about $65 pr. 3 litres and is definately
> > worth the price.
> > Once applied you can forget all about corrotion. I have used it
> > silvercoloured on frames, and black under the car.
> > Wonderful stuff, but
> > makes your brain into a sponge within minutes if you
> > don't wear a carbon
> > filter mask, or preferably fresh air mask. (Paint
> > outdoors, use carbon mask)
> > You may find product on Jotuns pages at:
> >
> > www.jotun.com search for jotamastic 87, there is a
> > product brochure and
> > pictures.
> >
> > Brgs,
> > Harald Sakshaug
> >
> >
> > -----Opprinnelig melding-----
> > Fra: Rick Williams [mailto:rawmorgan@netscape.net]
> > Sendt: 4. desember 2000 03:51
> > Til: morgans@autox.team.net
> > Emne: Re: [Chassis Painting]
> >
> >
> > Mike,
> >
> > I used Por 15 gloss black with an overcoat of satin
> > black trim paint from a
> > spray can. The Por 15 really grabs onto a rusty surface
> > and dries rock hard.
> > I
> > recommend the gloss Por 15, as I tried the satin
> > product and got variable
> > results on the quality of the finish. It's expensive at
> > about $30 / quart,
> > but
> > I think it is worth it.
> >
> > Rick Williams
> > '51 Plus 4 #P2234
> >
> > "Mike Dixon" <mike.dixon@virgin.net> wrote:
> > > With the dreadful weather we are having I give in. I
> > am happy to go out
> > in
> > > the Mog when its a bit wet but this.......
> > >
> > > I have therefore decided to attack the surface rust
> > on the chassis - well
> > > that I can get at with a wire brush from under the
> > car. Once cleaned up
> > the
> > > question is what to paint it with. The options I
> > have identified are:
> > >
> > > Chassis black
> > > Smoothright
> > > Brushing Gloss
> > >
> > > Once done perhaps some Waxoyl?
> > >
> > > I wondered what the views of the DG were?
> > >
> > > Mike Dixon
> > >
> > > 71 4/4
> >
> >
> > ________________________________________________________
> > ____________
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