I don't have a current blue book, and I am a little unsure on the regulations from the MSA regarding "rollcage feet" in the context of a spaceframe chassis.

I know about the standard "cage feet" regulations, but clearly these are not followed in a spaceframe construction, so.......are there any regulations governing the "bit of a spaceframe" that is classed as the rollcage, and how it connects to the rest of the frame?

isn't the blue book freely downloadable now?

aha will try!

the last book (2004?) I had never got into the specifics anyway though. I know of several (Ultima springs to mind) cars where they certainly don't have any "feet" as such, but are still fine by msa...

http://msauk.org/uploadedfiles/msa_forms/bluebooks/10/160-195%20Competitor%20Safety.pdf

just about to point out you can download it.

I think (from what i remember - but i read it ages ago). if you go to the base of something it must be spread on a 3mm 4" plate. If you weld something onto the side of the cage like a chassis tube then it doesn't list anything specifically. On my chassis i've made one roll cage leg attach via 4 points that bolt with a m10 bolt who's total area adds up to 4" with 3mm steel plate.

I don't recall Matt raising any specific objections when i mentioned it in a roll cage thread - although he may have a) not wanted to voice an opinion, b) missed my comment entirely or c) said it was fantastic and i've forgotten.

Just had a chat with a couple of folks, and basically its make it up as you go along as far as I can determine!

I'm off to weldy weldy!