Nice ride.
But can somebody explain how that cage certs to 8.50 cause that's got me puzzled????
I have a 10 point cage in my car and I'm good for 8.50's. The CobraJet is also setup with a 10 point cage, 8.50 is the fastest you can with that cage. If you go faster then 8.50 but running slower then 7.50 Cars running 7.50 and slower must meet applicable SFI Specification
(25.1E, 25.2,
25.3, 25.4, or 25.5) for body/chassis design. Must have current NHRA serialized sticker affixed to the cage before participation.
When do I need a roll bar or roll cage, and what should it look like?
A roll bar is required in any convertible running 13.49 seconds or quicker in the quarter mile, and in other cars beginning at 11.49. The roll bar is accepted in vehicles running as quick as 10.00 second e.t., provided the stock firewall and floorboard is intact, other than for installation of wheel tubs. The rollbar must be constructed of minimum 1 ¾ inch o.d. x .118 inch wall mild steel tubing, or 1 ¾ x .083 chrome moly tubing, and must conform to the following diagram:
If the floor and/or firewall has been modified, then a full roll cage is required beginning at a 10.99 e.t. A full roll cage is required in any vehicle running 9.99 seconds or quicker, and any vehicle running 135 mph or faster (regardless of e.t.). The roll cage must be constructed of minimum 1 5/8 o.d.x .118 mild steel tubing, or 1 5/8 x .083 chrome moly tubing, and must conform to the following diagram:
The roll cage of any vehicle running 9.99 or quicker, or 135
mph or faster, must also be certified by NHRA every 3 years, and have a serialized sticker affixed prior to participation.