tomhop

tomhop

Active Member
The chassis on my series 3 is an old galvanised one, the galvanising is coming away in areas so my plan is to power wash the chassis use a wire brush to clean up any rough areas where the old galvanising is coming away, paint it with red oxide primer then Frost's chassis black over the top. is there any thing wrong with using red oxide primer (i have a free plentiful supply of it) or should i be using some thing else?
 
Red oxide is just a colour now.
I would use a cold galv paint then slap whatever on top of that.
 
I don't think proper galvanizing can come away, it bonds with the steel at a molecular level. Could it be an old galv paint treatment?
 
Rattlegun said:
I don't think proper galvanizing can come away, it bonds with the steel at a molecular level. Could it be an old galv paint treatment?
Click to expand...
the stuff that has come off is quite thick and flaky not like paint and underneath it looks like surface rust. it looks to me like water has got in then frozen and burst out the layers but the actual chassis looks qquite good under the surface rust, i will try and get a picture up tomorrow.
 
i suppose the other option would be to send it off to be shot/media blasted then galvanised again
 
here are some pictures, any thoughts i was told it was an old galvanised chassis and it definitely looks like one. I got a quote back from Scottish Galvanizers Ltd to shot blast and galvanise the chassis would be £250 + VAT which i thought was pretty good and they seem to get a good review. only trouble is i would have to deliver it and collect it from Glasgow area which is a pain,
 

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I've never seen galv blow. Rust will eventually come though but that's different.

I suspect it's painted as well.
 
tomhop said:
i suppose the other option would be to send it off to be shot/media blasted then galvanised again
Click to expand...
I wonder if it was metal sprayed rather than galved? That can flake off if the blasting isn't done right.
If it has, that stuff can be a bugger to blast off.
I'm no expert but I've not seen galv flake off but metal spraying can.
 
Just spoke to the local galvanising company (didn't realise I had one) they will galvsnise the chassis for £250 + vat so think I will finish dismantling it take it to the local shot blaster and get it done right
 
Well it looks like you're off down the galvanising route but if you want to paint over it I think you need a different sort of primer than red oxide. I don't think that stuff from Frost will go well over a galvanised finish either...
 
so new plan strip and galvanise then mordant solution then chassis black paint? or should there be some kind of primer after the mordant solution?
 
any one have any pictures of a series with a unpainted galvanised chassis wondering how it would look unpainted?
 
Richards chassis recommended mordant wash, then etch primer, then Jotun Conceal - it's an expensive chassis black and goes on quite well. I suspect I should have thinned it and done serveral layers instead of one two too thick layers...
 
sounds like painting it would be the right thing to do, another layer the metal worm has to get through before it can start eating it!
 
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