If they had galvanised the H4 chassis then it probably would have been fine.
Even if the powder coating had actually been powder coating it would still
have probably been ok.
But, the blank paint that was used sticks better to the fibreglass than it
does to the steel with the expected results.
The paint on the subframe on my 2+2 had rust coming through before it left
the garage during the build.
Even more annoying as when i ordered the kit i asked for the subframe not to
be bonded to the bulkhead so i could get it galvanised.
It came bonded on and i was recommended not to try removing it, done it on a
couple of other 2+2's since though.
Mine luckily is still non rusty after it's in situe sanding down and
respray, yes, using smooth hammerite.
Jim
-----Original Message-----
From: jin
Sent: Wednesday, July 18, 2012 4:01 PM
To: Quantum Owners Group
Subject: [Quantum Owners] Re: H4 RUST
i agree with Jim
the 2+2 does seem to be the better bet if you can seal out the leaks,
and the sub frame should be viewed as a removable item for future
corrosion repairs, the H4 seems pretty bonkers in the respect of the
construction yet very clever at the same time, the problem being the
close proximity of the fibreglass to the steel, you can just slosh
waxoyl about like you would with a tin car, shame the 2 halves cant be
separated more readily
On Jul 18, 2:14 pm, "Jim Hearne" <
j...@quantums.info> wrote:
> That was the reason i bought a 2+2, i was feed up with my metal cars going
> rusty.
> The 2+2 is fairly IMO safe as long as you sort out the pockets behind the
> door hinges which can leak water into the sill area.
> And don�t have any leaks around the petrol filler pipe either on the
> outside or under that car.
> The only bit that can rust is the subframe which can be removed,
> sandblasted and galvanised if you wish.
>
> The H4 is a different question because of the way the chassis rails come
> through the body in various places.
> The paint comes off the chassis with the fibreglass and the water gets to
> the bare steel.
>
> I asked original Quantum about separating the floor and body from the
> chassis and they told me not to even attempt it.
> The chassis bonded into the body halves in the moulds and without the
> mould to keep things straight it will distort all over the place.
> This wasn�t going to stop me trying it (with suitable jigging) but an
> unfinished kit turned up with no rust as it had always been garaged.
> I may well dissect the other H4 body from chassis just to see how it all
> goes together as i�ve still got to do some extensive chassis mods to fit
> the 4 wheel drive and the Mk5 Fiesta dash and aircon system.
>
> I will be powder coating everything i can remove (i know there are people
> on here who are against powder coating) and probably use rubber flat
> roofing compound to paint the chassis i can�t remove.