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-   -   Roll bar fastening (http://www.haynes.co.uk/forums/showthread.php?t=13637)

TheArf 17th May 2015 06:57 PM

Roll bar fastening
Ok I don't know if this is the right section to be asking this if not please forgive.
Right, I'm looking to fit my roll-bar to the car I have had the bar made by a local company, but we won't go into that it's a sore subject, my question relates to the support bars going backward. Could I fit a couple of suspension brackets to a plate welded in to the two box section uprights, the ones that are vertical between the rear hoops, and then fit a bolt through the tube. The brackets would be welded to the plate.
I seem to remember that they would not allow the original design saying that it needed two bolts to anchor the rear stays.
Does this make sense or does it seem like I am talking a load of twaddle.


Stot 17th May 2015 07:42 PM

Sounds like how I did mine?


garyt 17th May 2015 07:47 PM

+1 for stots idea afraid I shamelessly copied it but I did move them outboard of D12 :D

TheArf 17th May 2015 07:56 PM

That is great, but does it have to have a collar through the tube or can you just put a bolt through it. I have used 40mm tube so there is very little clearence between the tube and the inside of the bracket

Arfon :D

PorkChop 17th May 2015 09:26 PM

A crush tube?


garyt 17th May 2015 09:39 PM

definitely a crush tube not just a bolt

TheArf 18th May 2015 08:27 AM

Then a crush tube it is, but the roll-bar tubing wont crush, if you noticed in the first entry I had trouble with the guy who made the roll-bar, I asked him to make it out of 3 mm wall tubing, he made an executive decision and made it out of 6 mm wall thickness, yes that's 6 mm so the car has doubled its' weight and I predict having to build a f****ing wheelie bar for it. That is why I hate having to outsource things.:mad:

Stot 18th May 2015 10:57 AM

Just cut the suspension mount in half, make the crush tube a bit bigger than the tubing, bolt the suspension mount up to the crush tube so the spacing is set and then weld it to the chassis.


flyerncle 18th May 2015 11:03 AM

Look at it this way,Lord forbid you ever need to test the roll bar but it will be F ing strong;)

TheArf 18th May 2015 11:27 AM

Roll-bar will be ok will just need to re-new the rear shocks every 12 month due to being worn out


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