Skirrow
|
| posted on 18/7/04 at 11:46 AM |
|
|
Galvanised panels
I hope nobody minds me asking questions about a kit other than the locost. I want a locost but I'm doing something simpler first.
Anyway, the buggy I am building has galvanised panels.
Do I need to paint them. I have drilled holes to rivet them to the chassis and trimmed them to fit so there are little bits where there is no
galvanising. Will these bits rust like buggery?
Cheers,
Dave
|
|
|
|
|
white130d
|
| posted on 18/7/04 at 03:59 PM |
|
|
Hammerite
It wouldn't hurt to hit the raw edges and holes with a little silver hammerite to seal them. They will eventually rust, but the hammerite will
slow the process down.
David
"There's only 2 things that money can't buy, and that's true love and home grown tomatos" Guy Clark
|
|
|
MikeRJ
|
| posted on 18/7/04 at 04:30 PM |
|
|
quote:
Originally posted by white130d
It wouldn't hurt to hit the raw edges and holes with a little silver hammerite to seal them. They will eventually rust, but the hammerite will
slow the process down.
David
Note that Hammerite (like the majority of paints) will not stick well to galvanized metal. The area should be primed with either Finigans Non-ferrous
metal primer for Hammerite paint, or a good etch primer for acrylic or cellulose based paint.
|
|
|
madforfishing
|
| posted on 18/7/04 at 07:15 PM |
|
|
How about that aerosol 'cold galvanising spray' - basically Zinc in a can.
It's available from most Motorfactors.
You'll still need to etch prime the panels afterwards if you intend to paint them though.
[Edited on 18/7/04 by madforfishing]
|
|
|
Skirrow
|
| posted on 18/7/04 at 08:01 PM |
|
|
Is there any problems just not painting the panels? I will do something with the raw edges but is the rest ok? I don't mind the matt black
finish, it's an off road buggy so its not gonna stay shiney anyway.
|
|
|
Peteff
|
| posted on 18/7/04 at 08:46 PM |
|
|
You can get galvafroid zinc paint to cover the raw edges but I don't think you are supposed to paint galvo till it's been exposed to the
elements for about 6 months.
yours, Pete
I went into the RSPCA office the other day. It was so small you could hardly swing a cat in there.
|
|
|
NS Dev
|
| posted on 19/7/04 at 07:58 PM |
|
|
very small areas around drill holes etc will not rust. The zinc is a sacrificial anode and will corrode instead of the steel and it has a self healing
property around drilled holes etc in that the anodic action of the zinc will protect the steel for a small area beyond the zinc covering.
I have done this sort of thing when building 4wd buggies for a friend's farm and we had no corrosion problems.
As was noted, cold galv spray can be used to touch up hidden areas that have lost more galv.
|
|
|
Mark Allanson
|
| posted on 19/7/04 at 08:28 PM |
|
|
The only paint that will stick to new galv is 2K epoxy, a pig to use and not 100% effective. Like pete says - you have to leave the galv to weather
before painting, or keep it shiney by polishing with silicone polish (non abrasive)
If you can keep you head, whilst all others around you are losing theirs, you are not fully aware of the situation
|
|
|
Skirrow
|
| posted on 20/7/04 at 06:20 AM |
|
|
Thanks guys, I've given each of the drill holes a little squirt of waxoyl and riveted in place. If they rust I'll replace them.
Cheers 
|
|
|
