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Strengthening Chassis Rails (plating)

General Tech Talk

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A1
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Joined: Tue Jan 28, 2003 8:57 pm
Location: NEWCASTLE

Strengthening Chassis Rails (plating)

Post by A1 »

OK So im in the middle of SAS'ing a Vit ...

Now the chassis rails on the vits let alone and zooks are extremely thin ( obviuosly strong enough for there intial intended purpose ) so when we start modifying to run larger tyres more travel ..and the increase on torque frok lower gears and such they just cant handle it


Well I'm ready to start welding on coil mounts /panhard/ and shock hoops so the question is do I plate this front area of which on the vits near the front of the chassis it seems to have its inbuilt crumple zone 3 vertical compressions on the rail bout 15 wide x entire rail height .
So do i plate all but the these surrounding areas ... the next question is well what thickness plate if I do 3mm or 6mm and I would guess that I should also plug weld the middle sections of the plates if there over a certain size .. I would be worried that if I plated with 3mm and didnt plug weld the plate aswell that it may just flex the same as the chassis rails would've if I hadn't plated them .

And also I have read in a post before the the best appropriate way to weld the plates on as such this figure , so that the ends

<===> ( yes bad figure :roll: )

are tapered (corners) but unfortunatley i wont beable to do this style in all areas due to restrictions i have with factory brkts being in the way .





So if anyone has any info reagrding this due to they have done it before please share .



I did search but found nothing that answered my questions ......and i will be ringing an engineer tomorrow aswell but i wanted your valued :D opinions



Cheers


Dan
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Post by bru21 »

don.t brace with anything thicker than 2x the metal thickness it will stress crack, rather not weld vertically if you can avoid it, what i have done is plasma cut up another chassis and will laminate mine with the other cut into an L just around where it needs it, and far enough along that there is little stress where the bracing ends.

cheers bru
ADHD Racing would like to thank
Mrs Bru @ Sunshine Coast Developmental Physiotherapy - www.scdphysio.com.au , Ryano @ Fourbys www.generaltire.com.au Blitzkrieg Motorsport
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A1
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Post by A1 »

Cheers fo the info bru


chatted with the engineer today and all seems fine NOW :D


Will just be plating the chassis with 3mm ;)


And Ive changed the desing I was going to use for the fish plates although now not as big as first there will be no vertical welds on the rails themselves.




I did find out though that I have to supply a hole lot more info regarding the suspension mod with the new procedures in place ....BUT i was lucky enough to purchase another RIG with the same mods that is engineered already that im raping some of the parts and all the info i need is already accumalated in the other engineers report :armsup:





Dan
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