Bolt in Roll Bar Nhra Legal
The Chassisworks roller cage kit comes with 6″ x 6″ pre-cut plates for your floor mounting. According to the NHRA regulations: “For monocoque cars with storage floor and firewall (wheel housings allowed), the roll cage can be screwed or welded to the floor/rocking box.” If you opt for the bolted option, the 0.125-inch steel plates should be located at the top and bottom of the floor and screwed together with at least four 3/8-inch screws and nuts. Welding plates in a car does not require floor plates, but must be completely welded to the ground. The crossbar or wiring harness holder performs several functions. It increases structural rigidity to avoid forward or lateral collapse. It also serves as a attachment point for seat belts. The straps are usually attached to a bracket on the belt harness or a circumferential belt via a welded bracket and screw. The rod must be installed vertically within four inches of the driver`s shoulders, but not above. A critical step in the construction of a roll cage is the release of pipes. You cannot weld a flat cut pipe end at an intersection of another part of the cage and expect it to be safe. Tube Notching or Fish-Mouthing creates a crescent shape at the end of the tube so that it can slide properly over the tube that crosses. As a rule, a specially developed pipe mower or drilling press that allows variable angles is used with a hole saw at the end.
If the cost is too high, a hand grinder can also work, although it may be less accurate. While we`ve offered plenty of tips and tricks when it comes to installing a 10-point roll cage, it doesn`t happen in a rulebook. They are cheap and inevitable when it comes to getting your cage certified. In addition, there are other rules that must be followed to make your vehicle legal for a certain amount of time and a certain speed outside the roll cage. It`s a good idea to check out the tracks you`re running with on site to find out about the extra rules they need to run. Don`t rush with something that can keep you alive, “Take the time to settle in,” Wright said. “All of our cages are oversized, so you can adjust them as tightly as possible, and the more you can mount them, the better the results will be.” Keep in mind that a roll cage is designed to keep you safe in the event of an accident, so don`t skimp on your safety! Nothing screams at speed like a 60 hp Mustang with a 10-point roll cage. While it may now be safer to drive it, it certainly didn`t contribute to the acceleration factor with the extra weight. The reason we install the cage now only gives us one less thing to worry about when it`s time to power the car with a proper engine. Believe it or not, this section is the easiest part of it all. The “D” handlebars or main tire grab bars are designed for monocoque vehicles where the roll bar is connected to the floor instead of a separate frame.
The D-rods are designed to support the main tire as a triangulated reference point before movement in the event of an impact. Depending on the application, they can be welded with a 6 x 6 inch plate on the tunnel or the bottom of the drive shaft. On top, the D-rods are welded into the corner where the wiring harness and roll bar meet. As we install a number of TCP subframe connectors, we have placed the D bars above the top of the connectors. This allows us to weld the connectors under the car to the plates for even better protection. The NHRA regulations state the following: When building a race car, one of the most frustrating and misunderstood parts of building the roll cage can be. The vehicles have different frame designs, could have made changes to that frame, or it is a convertible – all of which require different attributes for the cage design. There`s more than you think with this jungle gym of pipes in your car. b.
Clevis (es) male or female allowed. The outer wrench must use two brackets at least 1/8 inch thick (CM or MS) welded to each vertical bearing cage. The socket must use a support at least 1/4 inch thick (CM or MS) welded to each vertical roll cage.