Mark18
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| posted on 26/6/03 at 07:43 PM |
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Galvanizing
Are there any problems with galvanizing the chassis? ie. will you get a reaction between the different metals.
As far as I can see, whats good is the fact that the zinc coats the inner surface of the box steel, giving rust protection should water penetrate
through the rivet holes, also how much heavier would this be than painting?
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type 907
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| posted on 26/6/03 at 08:44 PM |
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Hi, the two main problems with hot dip galvanizing are; 1 Heat distortion, (zinc melts at 420C) will buckle your chassis.
2 Any sealed tubes or boxes will be drilled with a vent and drain hole (about 6mm) to let out expanding air,and allow surplus zinc to drain out.
Trouble is loads gets left in, making your chassis heavy.
Hope this helps.
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James
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| posted on 27/6/03 at 08:40 AM |
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Hi Mark,
See this other post:
http://forum.locostbuilders.co.uk/xmb/viewthread.php?tid=4855
From other posts I've read on the matter I seem to remember that aswell as the heat distortion you've also gotta get it dipped in acid
which reduces the box section by 0.1mm (each side) and the zinc is heavy too.
Cheers,
James
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Peteff
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| posted on 27/6/03 at 09:14 AM |
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Nowt wrong with galvo, on farming tackle and buckets. It looks agricultural though and you shouldn't paint over it for 6 months till it
cures.
yours, Pete
yours, Pete
I went into the RSPCA office the other day. It was so small you could hardly swing a cat in there.
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Mark18
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| posted on 27/6/03 at 07:20 PM |
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Thanks for clearing that up, looks like that brief moment of inspiration was just a false alarm.
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jonti
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| posted on 30/6/03 at 02:08 PM |
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Galv's ok if you're not too conerned about weight although it'll only add a few pounds so if you're not racing wot the hell,
it'll never rust inside or out.
Pilgrim Sumo fake snakes get their chassis galved so I did my lolocost one and it never moved . Mind you it is made out of thick section tube and not
as many bits and angles as a proper one like wot you blokes use.
Shame really though, cos it was a bit out of true before it got done (thanks RHE) and I'd hoped the galving might have true'd it up
!!!!
I got round it with a gas bottle and big hammer after and sorted it though.
Why would you want to paint galv anyway. ? You won't see it unless you lift the bonnet and then only a bit of it.
Probably wouldn't do it again though..............galving or buying from RHE.........in fact definitely not the latter !!!
[Edited on 30/6/03 by jonti]
OFROK
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