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Posted by Pedro on July 18, 2001 at 13:28:34:

In Reply to: Does anybody know about roll cage tubing specs?? posted by -Huzurdd on July 18, 2001 at 02:15:08:

Basically the tubing diameters are the same spec for most racing rules.

Use DOM seamless, I would advise against cro-moly.Because it is more expensive, the welder needs to be really good and unless it is done perfect most likey you will need to heat treat the cage afte its done$$$$

do alot of research on the design, I built little mock ups of my designs with thicj welding rod and held then in my hand and got a good idea of what tubes really help in strengthening the cage. Definatly go to rear shock towers and not wheel wells like traditional roll cages.

the more times you connect with the chasis the better, look at e46m3 race cars. look at a-pillar tubes with gussets(with holes)connecting tubing to a-pillar. Rally cars use this techik extensively on b-pillars and everywhere they can...

Great info here,

http://www.e30m3performance.com/tech_articles/cage_symposium/cage_symposium.htm

good luck, bring some money......



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