Is welding to chassis illegal in QLD

[BENOLUX]

Hey guys just after some knowledge, is it illegal to weld to the chassis in QLD. looking at doing sliders and the bloke doing them wants to weld plates to chassis but i think i want brackets.

any opinions would be appreciated thanks guys

[SteelArt]

No it is not illegal.

I would go plates though, IMO it is "Ruff" to weld sliders to the chassis...

[BENOLUX]

Ok thanks mate, yeh i want to do u shapped brackets but he wants to do tap plates so im unsure what to do. i think ill get the brackets made thanks for the help

[83-mud-lux]

i rekon its better going brakets rather than welding to the chassis.
because if you ever bend them up against the sill or want to change them or modify them its only 2 bolts and there off.and i think the u shape would be stronger aswell and it would distribute the weight better on the chassis rather than just having one point.

cheers..smiley..

[Struth]

Welding a larger plate 10 0r 12mm thick to the chassis then drilling and tapping to bolt the slider on is the stronger method, simply unbolt the slider if it's damaged.

Talk to an engineer first regarding the best size and best way to weld the plates.

That is the advice of my eng in Vic anyway, providing the manufacturer doesn't place any requirements on welding the chassis such as stress relieving.

Cheers

[BENOLUX]

this is what my mate wants to do exactly that. do the plates need to fish tailed or whatever its call looks like <>. or is a square plate sufficient.
If anyone knows a good engineer in Brisbane please let me know!!!

[Struth]

this is what my mate wants to do exactly that. do the plates need to fish tailed or whatever its call looks like <>. or is a square plate sufficient.
If anyone knows a good engineer in Brisbane please let me know!!!

Square plate is fine and probably stitch welded on not full welded.

Get an Eng's advice, I have to discuss mine further with the eng once I can prove to him that it's ok to simply weld on the chassis, he basically said to get a Chassis and Body repair manual from Toyota for the vehicle, but it mentions nothing about welding the chasis or anything for that matter .

Cheers

[Kingston_99]

sory for the hijack,
so its legal to do this to the chassis? invert the rear shocks and get rid of the tow bar and weld mounts to the side of the chassis and put a bent up plate in between both chassis like bubs in the pic below?

[Struth]

Don't know if that's legal or not, depends if an engineer interprets it as legal and safe. Depends on the engineer too.

As I said though you need to establish if the manufacturer reccommends anything special if the chassis has been welded to, it also depends on what has been welded and how.

Cheers

[83-mud-lux]

ohh sorry i interpreted it wrong,i thought you meant just weld plates onto the slider an then onto the chassis.not tap it and bolt the slider to it.my mistake.wouldnt it beeasier to make u plates around te chassis.less screwing around with engineers and stuff,unless you're suppose to see an engineer about the u plates aswell.

[Struth]

ohh sorry i interpreted it wrong,i thought you meant just weld plates onto the slider an then onto the chassis.not tap it and bolt the slider to it.my mistake.wouldnt it beeasier to make u plates around te chassis.less screwing around with engineers and stuff,unless you're suppose to see an engineer about the u plates aswell.

Depends on the vehicle, on mine I don't like where the U plates would have to go spacing wise, would leave too much unsupported overhang at the front of the slider.

Also the U bolts clash with the fuel tank on the passenger side.

I reckon plates on the chassis would be stronger and less likely to flex.

Just my opinion, plenty of blokes run clamp plates with no dramas.

[83-mud-lux]

yea every one has there own opinions,i got the clamp plates on mine and there way strong enough for me,i only weigh 1.4 tonne.thats not much when you compare it to some patrols and cruisers.i have seen the clamp plates bend like you say,my mate has em on his patrol and he bent them up to the sill.