www.blankethillspeedway.net

270 cc Micro Sprints Rules

1. Minimum Age 16 or older PROOF REQUIRED

2. All cars will be subject to safety and technical inspection prior to and after competing.

3. Any single cylinder 250cc. full production engine max. of 271cc permitted with no % over. No forced air induction. Any height compression head is legal. NO HOT FUELS.

4. Minimum weight 600 lbs weights are measured with the car and driver as they come off the track immediately following an event. WEIGHT TO BE CLEARLY MARKED ON THE SIDE OF THE HOOD.

5. Roll cage min. thickness of 0.065” of (6) hookups. Must be well gusseted. Min. 1 ¼ inch O.D. tubing. Must be 4130 Chromolly. Complete frame 0.065” min. 1 inch tubing may be used of wall thickness is at least 0.083.

6. All steering and suspension points that are bolted together must use locking nuts, safety wire or cotter pins. The steering mechanism must be constructed of a min 5/8” rods and 3/8” hiem ends.

7. Cars must have firewall to separate the motor compartments and fuel tank from the driver. Min. thickness 0.040”.

8. Belly pan must extend from the front of the seat to a point beyond the driver’s feet.

9. Brake lines must be steel, stainless braded teflon brake hose or DOT approved rubber brake line for brake plumbing. No exposed plastic tubing allowed.

10. Wheel base is a minimum of 56 inches and a maximum of 72 inches. Wheel base is measured center of front axle of center of rear axle. Maximum outside tire width is 59 inches.

11. All cars must be equipped with side nerf bars not to extend beyond the outside edge of tire.

12. Cars must have front and rear bumpers. Front bumpers not to extend the outside edge of the tires.

13. Any material used to add weight must be bolted or clamped as part of the car’s 13. structure. No zip-ties allowed. Weight must be clearly marked with car’s number.

14. Top wing not to exceed 12 ft square with maximum 24”X56” sideboards. Not to extend outside width of tires.

15. Nose wing not to exceed 18”X24”.

16. Car numbers must be on the nose 8” min. both sides of the tail 10” min. and sideboards of wing 12” min.

All rules are subject to additions or changes as deemed necessary by track officials.

RULES DISCLAIMER: No warranty of safety is expressed or implied as a result of this publication of the rules. Rules are intended as a guideline and are in no way a guarantee against injury or death to participants, spectators, or officials. Anything not covered by these specifications should be approved by the track officials and placed in writing.