How quick can I go before I need a roll cage?
The 2007 Drag Racing Year Book (White Book) on page 54 states:
GSR 4:11:3 Cars with engine behind rear axle centreline.Cars running 8.50secs - 12.99secs to have 6 point roll cage per GSR 4:11
All cars with altered roofs such as roof chops, cabriolets and "Webasto type" sunroofs to have 6 point cage per GSR 4.11
All cars running 14.99secs or quicker with GRP or non metallic "flip fronts" to have 6 point roll cage as per GSR 4:11
All cars running 13.00secs to 14.99secs to have roll bar per GSR 4.10
Any car running quicker than 8.49secs must be fitted with a roll cage conforming to the relevant SFI spec.
So in a Beetle (or other rear engined VW) if you either:
a) Run quicker than 12.99secs
b) Have a cabrio, Webasto or altered roof
c) Have a GRP or non-metallic flip front
Then you have to have a 6 point roll cage as per GSR 4:11
If you run quicker than 14.99 but no quicker than 13.00 you must have a roll bar as per 4:10.
- VWDRC's blog
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