All cars should be constructed to look like Micro Sprints. All cars must be equipped with complete body parts: hood, tail, side panels, belly pan, etc.
All cars must have legible numbers at the discretion of the scorers. No reflective
numbers. Numbers must be printed on both sides of tail and wing at all times.
Numbers on the top wing must be 12" by 2" width. Any letters must
be 6" by 1" width. Numbers of the nose panel must be 6" by
1".
Roll cage thickness of .065 if six hookups. Must be well gusseted. Minimum
1 1/4" OD tubing. Must be 4130 chrome moly. Complete frame .065 minimum
1" tubing may be used if wall thickness is at least .083.
All steering and suspension parts that are bolted together must use locking
nuts, safety wire or cotter pins.
All cars must have a firewall to separate the motor compartment and the fuel
tank from the driver. Minimum thickness .050.
The belly pan must extend from the front of the seat to the nose of the vehicle.
The steering mechanism must be constructed of a minimum of 5/8" rod and
3/8" heim ends.
Radiators must be mounted so that contact cannot be made by another car.
All cars must be equipped with nerf bars extending to at least the inside
of the tire, but not beyond the outside of the tire.
Sharp, pointed edges or objects (excluding wings) will not be tolerated in
cars. Only nerf bars can extend beyond the center line of the tires.
The fuel shut-off valve and the kill switch must be functional and accessible
to the driver.
All wet cell batteries mounted in the cockpit must be covered and vented out
of the cockpit area.
Brakes must be of sufficient strength so as to stop the wheels in the pits
or stop the car while in motion while on the track.
Belt driven cars will not be allowed. Centrifugal clutches will not be permitted.
Seat belts and shoulder harness must be in good condition and race approved.
With driver seated in the car, there must be three inches of clearance between
the driver's helmet and the upper roll bar.
Helmets must be approved for competition, full-face shield (Snell 95 or 2000
approved) required. All drivers are required to wear neck braces, arm restraints
and fire resistant suits. Racing gloves are required.
Each car must have a workable, approved fire extinguisher in their pit area
at all times.
Minimum weight of car and driver – 600 pounds. All added weight must be painted
in white and have your car number on it. All added weight must be bolted with
washers and lock nuts.
Wheel must be 56" minimum and 72" maximum. Car width should not
exceed 58" (sidewall to sidewall).
Top wing may not exceed twelve square feet. Wing panels cannot extend over
the width of the tires. Side panels must not obstruct the view of the driver
and cannot extend past the center section by more than 10 inches, front or
back. 24" x 54" side panel.
ENGINE SPECIFICATIONS:
Any single cylinder 250cc full production engine. Maximum of 270cc permitted.
Forced air induction will not be allowed. Alcohol only. No exotic fuels or
additives. Fuel tech by track officials can and will be taken.
Anything not covered in these rules will be up to the discretion of the tech
or track officials, without recourse from drivers or owners. Safety infractions
can be cause for a car to be kept out of competition until they have been
corrected.