Texoma Motor Speedway

2008 Unlimited Winged Outlaw Karts

  Drivers:
  1. Minimum 15 yrs old. Drivers under 15 may compete with track official approval.
  2. Safety rules apply to kart & driver. Must have serviceable fire extinguisher in pit.

Frames:

  1. Any production or custom built frame allowed. Quarter midget cars are ok.
  2. Frames must be of kart configuration. Must be made of steel. No aluminum or titanium material.
  3. No micro/mini sprints, midget cars or lawnmowers. (Quarter Midget cars OK)
  4.  Front and rear suspension is allowed, only (1) one shock/spring per wheel.

Body:

  1. Bodies are mandatory, fiberglass, aluminum or steel. May resemble any production or race type vehicle.
  2. Top wing recommended. Wings on hood are allowed. Top wing sides must stay within 3” from outer most edge of kart. 6 sq. ft. Minimum. No sharp edges.

Roll cage:

  1. Minimum 4 point 3/4" O.D or larger steel roll cage mandatory. No conduit cages! Cage must be securely welded or bolted to frame with minimum 3" head clearance.
  2. Minimum 4-point seat belt.
  3. Metal racing seat is mandatory.
  4. Right side cage net, right side helmet support or a helmet restraint is mandatory.
  5. Front and rear bumpers required of Max. 1" O.D tubing. Not to exceed outside tread width of tires.
  6. Nerfbars are mandatory Max 1" O.D.
  7. Bumpers and Nerf bars must have rounded or capped ends. No sharp edges

Engines:

  1. No multiple engines karts/cars are allowed.
  2. Natural aspirated engines only! NO Nitrous Oxide, supercharger or turbocharger!
  3. Any four-stroke single cylinder two valve engine, no limit to modifications.
  4. Industrial based overhead valve engines and must be currently manufactured.
  5. Must run stock engine block and head (no limit to modifications)

Minimum Kart Weight for Maximum Displacement:

  1. Base weight is 320 lbs. plus 1 pound per 2.5 cc or fraction of a cc

Example:
Briggs 206cc your total weight would be 402 lbs.
Honda 270cc your total weight would be 428 lbs.
Briggs 305cc your total weight would be 442 lbs.
Honda 340cc your total weight would be 456 lbs.
Briggs 342cc your total weight would be 457 lbs.
Honda 390cc your total weight would be 476 lbs

  1. Overhead Valve Push Rod (OHV) Four-Stroke engines, base weight 320 lbs plus one pound for every 2.5 cc or fraction of a cc.
  2. Flat Head Four-Stroke Cycle engines, base weight 290 lbs plus one pound for every 3cc or fraction of a cc.

Fuel:

  1. Gasoline racing gasoline or methanol/alcohol fuel OK. No performance enhancements or additives allowed. This only applies to performance enhancer’s, is not meant to exclude top end lubricants.
  2. Drivers must wear fire retardant racing suit if racing with alcohol fuel, and must have yellow tape on upper rear roll bar of kart to indicate alcohol uses.

Calculating Displacement / Declaring Weight:

  1. Competitors must declare their weight and display it next to their front number in such a manner that the scale person can easily see it.
  2. The bore will be measured with cubic inch testing pump.
  3. We will round up to the nearesft whole cc when calculating minimum weight.

You may use following formula to calculating your engine displacement;
BORE X BORE X STROKE X .7854 X 16.39 = CC of engine.
(This assumes that the bore and stroke were measured in inches. The 16.39 is a conversion factor from cubic inches to cubic centimeters.) 

Unless these specs say you can do something, you cannot.

 

Rule Disclaimer: The rules and or regulations set forth herein are designed for the orderly conduct of racing events and to establish minimum acceptable requirements for such events. The rules shall govern all entrants. NO EXPRESS OR IMPLIED WARRANTY OF SAFETY SHALL RESULT FROM PUBLICATIONS OF OR COMPLIANCE WITH THESE RULES AND OR REGULATIONS. They are intended as a guide for the conduct of the sport and are in no way a guarantee against injury or death to a participant, spectator, or official.

The race director shall be empowered to permit deviations from any of the specifications, herein, or impose any further restriction, that in his opinion do not alter the minimum acceptable requirements. NO EXPRESSED OR IMPLIED WARRANTY OF SAFETY SHALL RESULT FROM SUCH ALTERATION OF SPECIFICATIONS. Any interpretation or deviations of these rules is left to the discretion of the officials. Their discretion is final.

January 1, 2008

Texoma Motor Speedway

Wichita Falls, Texas