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would you say they meet these requirments?
i know its alot but with d1gp coming up im sure people will ask , and for the price , thats a great price , and if its in d1 spec you will be having to add me to the list
Main Hoop
The main roll cage hoop shall be as wide as the full width of the interior and must be as close to
the roof as possible. One continuous length of roll bar tubing shall be used as the main hoop.
The main hoop must consist of not more than four (4) bends maximum, totaling one hundred
eighty (180) degrees +/- ten (10) degrees.
Diagonal Brace
At least one (1) diagonal brace shall be used in the same plane as the main hoop. One end of
the diagonal brace shall attach to the corner, or horizontal part, of the main hoop above the
driver’s head, within twelve (12) inches of the driver’s-side corner. The other end of the diagonal
brace shall attach to the mounting plate (or to the main hoop as close to the mounting plate as
practically possible) diagonally opposed to the driver’s head (passenger floor).
Forward Hoops - Option 1
The forward hoops shall extend from the main hoop (in a forward direction) to the floor by
following the roof and the “A” pillar of the car. There shall be a bar connecting the two (2)
forward hoops at the top of the windshield mounted as close to the roof as possible. The
forward hoops shall incorporate no more than four bends each. Optionally a Halo Hoop (Option
2)” or Front Hoop (Option 3)” construction may also be acceptable.
Halo Hoop (Option 2)
A “halo bar” extends from the main hoop (in a forward direction) following the roof line to the
windshield then following along the top of the windshield, then following the roof line back to the
main hoop, thus creating a “halo” over the driver’s head. A “halo” bar shall be constructed of one
continuous piece of tubing. One (1) down tube following the “A” pillar must support the “halo” on
each side of the car. The down tubes shall incorporate no more than two (2) bends each.
Front Hoop (Option 3)
\A “front hoop” is a bar that extends up from the floor, then follows the “A” pillar up to the roof,
then follows the roof line across the top of the windshield, then back down the other “A” pillar,
and then terminates on the floor. There must be one (1) horizontal bar (following the roof line)
connecting the main hoop and the forward hoop on each side of the car. The front hoop shall
incorporate no more than four (4) bends.
Rear Brace
The main hoop must have two (2) brace extending to the rear. The brace shall be attached as
near as possible to the top of the main hoop, and no more than six (6) inches below the top.
Rear brace must not contain any bends
The main hoop brace may be mounted at the rear shock mounts or suspension pickup points.
They may go through any rear bulkheads provided the bulkhead is sealed around the cage
brace.
Door Bars / Side Impact Protection
Door bars on both driver and passenger side must be used. The driver’s door window glass,
window operating mechanism, armrest, map pockets, door panel, and inside door latch may be
removed. *This gutting of the door is only permitted if the roll cage incorporates at least two (2)
NASCAR style door bars that extend into the door or an X brace.
Mounting Points
The roll cage shall be mounted to the floor of the car in a minimum of six points. The cage shall
not go through the firewall. The seventh and eighth points must attach to the firewall or front
fender wells. All cage attachment points must be mounted to plates.
Mounting Plates
Each mounting plate shall be no greater than 100 square inches and no greater than 12 inches
or less than 2 inches on a side. Welded mounting plates shall be at least 0.080 inch thick.
Plates may extend onto vertical sections of the structure. Any mounting plate may be multiangled,
but shall not exceed 100 square inches total including vertical sections.
Mounting Plates – Bolt-In Cage
The attaching points of a bolt-in cage to the body must use reinforcing plates to sandwich the
body. At least three (3) bolts are required for each bolt-in plate and the plate must be at least
3/16 inch thick. All hardware must be SAE Grade 5 or better with 5/16” diameter minimum.
Tube / Mounting Plate Specifications
Any number of tubes may attach to a plate so long as they are touching each other at the plate.
There may be a small gap between tubes to allow welding 360 degrees around each tube
Tubing Sizes
Driver safety is of paramount importance below are the minimum requirements, it is always
better to over build the safety cage. Minimum1.5” OD x 0.095 DOM Steel 1.5” OD x 0.083
Chromium Molybdenum Steel
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