Does roll cage have to be welded to frame?
All vehicles with a frame, must have the cage welded or bolted to the car’s frame. Unibody cars with a stock floor and firewall may have the rollcage attached to the floor with 6-inch by 6-inch by . 125-inch thick steel plates that are completely welded to the floor.
Are bolt in roll cage NHRA legal?
Yes you will be fine per nhra rulebook. Although i would use a bolt in cage for anything other than “show”.
How fast can you go before you need a roll cage?
Roll cages are mandatory on all vehicles at 9.99 and quicker or any vehicle running 135 mph or faster (regardless of e.t.), or per class requirements. This style of cage is good till 8.50 1/4-mile times and 179 mph.
What quarter mile time requires a roll cage?
The roll bar is accepted in vehicles running as quick as 10.00 second e.t., provided the stock firewall and floorboard is intact. 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.).
Does roll cage stiffen chassis?
Roll Cages Forget a few simple bolt-on braces, a roll cage is the real deal of chassis bracing, and a vital part of any track car; partly to satisfy safety regulations, partly to massively stiffen up a car’s chassis.
Do bolt in roll cages work?
From a strength standpoint, bolting in a roll cage can be just as strong as welding if it’s installed correctly. Because bolt-on parts can generally be removed if needed with little to no evidence they were ever present, bolted roll cages are definitely a friendlier option for do-it-yourselfers.
How thick should a roll cage be?
The roll cage must be constructed of magnetic steel tubing that is a minimum of 1 ½” in diameter, with a minimum tubing thickness of . 095 (wall thickness).
How fast is an 8 point roll cage?
The 8-Point Roll Bar below allows you to run much quicker than 11.50 according to NHRA rules. In fact, as long as your vehicle retains the original floor, firewall, etc., the 8-Point Roll Bar below allows you to run as quick as 10.00 seconds in the 1/4 mile.
Can I MIG weld a roll cage?
You are betting your life on the roll cage you are building. It only makes sense to use the best possible materials and methods. While Mig welding may produce acceptable welds in a roll cage, Tig welds will usually produce a better result and a safer ride in your race car.
How often do roll cages need to be recertified by NHRA?
Any convertible running between 11 and 134.49 seconds must also have at least a roll bar. Roll cages are mandatory for any car either running 10.99 or quicker or capable of exceeding 135 MPH must be equipped with a roll cage. Cars that run between 7.5 and 9.99 must have their frames and cages recertified every three years by the NHRA.
What are the rules for street cars on NHRA?
Basic NHRA Safety Rules All cars must meet NHRA Rules and pass technical inspection This is general information only and you should always refer to the current “Official NHRA Rule Book”. Street Cars The following items are required for a vehicle and driver to pass tech: Good tires, a solid battery hold down, radiator
Where does the forward hoop go on a NHRA roll?
The forward hoop can go through or before the dash. The straight bar coming off the main hoop should be parallel to the roof before it makes its first bend. Also there can be bars that connect to the front down bars, go through the firewall and connect down into the front frame rails.
What are the regulations for wheelie bars on NHRA?
Regulations 3:2, 3:4, and 3:5 cover these items, while 3:6 states you can have nonmetallic wheelie bars. Regulation 4:2 states that you can ballast your frame, meaning you can add weight to it.