I have an MK roll bar with rear stays but I want to add a diagonal brace as a lot of track day comapanies are now demanding RAC/MSA type roll bars on open cars.

I'm thinking of using 35mm dia 3mm wall 304 grade drawn steel.

Anyone see any issue with this or suggest an alternative grade/type of steel?

Ta muchly

Isn't 304 a stainless grade?

Oops yes it is. My mistake I was looking at shiny things

quote:

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Originally posted by Pants On Fire
a lot of track day comapanies are now demanding RAC/MSA type roll bars on open cars.

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Whats the spec of the rest of the roll bar. Might as well check that as well if you're going to be modifying it.

From 'The Book' (2nd edition) :
"... and it is stipulated that it must be made from
cold-drawn seamless carbon steel tube of
45mm dia. x 2.5 mm wall thickness
or 50 mm dia. x 2mm wall thickness."