Rules

LINDA'S SPEEDWAY 2009 - 125cc MICRO SPRINT RULES

A micro sprint is defined as a racing vehicle of single seat design built upon a racing chassis mounted on 4 racing wheels. No rear engine cars or aluminum frames. Cars must be built to withstand the stress of high speed competition. Sprint car appearance is required.

APPEARANCE: The body must give the appearance of completely covering the car frame and must be fully painted. May be constructed of aluminum, metal, fiberglass or high impact plastic. All cars must have large legible numbers at least 12" high displayed on both sides of the tail and both sides of the wing panels. Prefix letters must be at least 1/2 the size of the numbers. Colors used for numbers must stand out on the car.

ROLL CAGE: Roll cage must provide protection with suitable space and head room in the driver's compartment and extend at least 3" above driver's head. Minimum roll cage diameter of 11/8 OD x .083 or 1 1/4 OD x .065 wall thickness (no 1" x .065 roll cages). Roll cage may be drilled to be checked at the discretion of Track Tech Personnel. Roll cage should be made of chromoly steel or material equivalent in strength.

WEIGHT: Minimum car weight with driver must be 600 pounds. At all times, any add on weight must be securely fastened.

WINGS: Top wing must be a single air foil design (maximum 12 sq. ft.). Wing panels can not exceed over the width of the tires. Maximum side panel height of 24". Side panels must be parallel and may not obstruct the vision of the driver. Front wings are optional, not to exceed 2.5 square feet or 10 inches in height. .

WHEELS & TIRES; 10" maximum wheel diameter. Must be approved racing wheels.

CHASSIS: Minimum wheel base of 55". Maximum wheel base of 65". Must have accessible fuel shul off valve and kill switch clearly marked. Cars must have approved fire wall between the driver and the engine compartment as well as between the driver and the fuel cell. Fuel cell is mandatory. All cars must have side nerf bars. Metal belly pan is required (minimum .040 thick). It must run from in front of the seat forward past the driver's feet. Cars must have front and rear bumpers. Rear bumpers must be suitable for push starts. No belt driven cars. No centrifugal clutches. Chain guard is mandatory. Front radiators must be shielded. Hose connections within the cockpit should be double hosed. Radiator and fuel vent hoses must extend to the bottom rail of frame. Driver's compartment adjustable suspension parts ok. No part of the car can extend out past the side walls of the tires.

BRAKES; All brakes must be in good working order and be able to skid the car at all times.


STEERING: No nylon steering hangers. Steering mechanism must be constructed of a minimum 5/8" rod and 3/8" heim ends. All universal joints on steering must be racing approved. Spring loaded quick release type steering hub required.
ENGINES: Single cylinder 125CC full production motorcycle engines (maximum total displacement of 136cc). No fuel injection. Gas or alcohol only. Nitrate fuel is illegal and will be checked at the discretion of Track Personnel. Mufflers/silencers mandatory on all exhaust systems.

SAFETY: Seat belts must be 3" wide 5 point approved racing harness. Belts must be in good condition and be attached to the car in a safe manner. Shoulder belts must run over a cross bar at shoulder height. Snell 95 or newer helmet and approved full face shield required (recommended snell 2000) . Approved fire suit mandatory. Nomex underwear, head sock and two layer suit is highly recommended. Arm restraints, neck collars and racing gloves must be worn at all times while on the Track. Open wheel cage net is recommended. Aluminum racing seat is mandatory. Must have headrest and be padded. Seat must be securely fastened to the car.

NOTE: Anything not covered in these specifications will be to the discretion of the Track Tech Personnel without recourse from any driver or owner
Linda's Speedway
200 Silvertown Rd.
Jonestown, Pa. 17038
(717)865-5330