2012 Stock Medium rules- (same as 2011)
This is a flat kart class
Age: 14-up (younger drivers with experience may be allowed with track permission)
Weight: 345# minimum
Engine: IKF or WKA Briggs and Stratton 5hp Methanol (flat head) engine rules (must specify IKF or WKA prior to tech)
Header must be wrapped!
PROTEST: If a competitor wants to have another competitor teched, they can make a protest. A sum of $100 cash must be submitted with the written protest. $40 will go to the track and $60 will go to the protested or back to the protester, depending on the tech inspection outcome. (legal or illegal)
All Flat kart classes:
CHASSIS SPECS: 74” Max. Length, Front Bumper 7 ¾” Min. Height, Rear Bumper 7 ½” Max. Ht. of lowest bar, Wheelbase 50” Max., 40” Min.
Tread width: 28” Min. Centerline of right front to Centerline of left front, 50” Max. width from outside of right rear tire to outside of left rear tire,
CHASSIS ADJUSTMENTS: No chassis adjusters shall be used while in motion and must have lock-nut installed and tight.
TIRES: SLICK TIRES ONLY! Maximum diameter 19.5”, minimum diameter 9”. NO SIPING OR GROOVING OF ANY KIND ALLOWED.
Safety is one of the prime considerations of Thunder Hill Speedway. Methods of operation, vehicle construction, track facilities and competition practices are under constant review to protect the karter and to raise the safety standards of the sport.
Helmets: All helmets must be” Snell 2005 or newer standards. . Buy a High quality helmet such as a Simpson, Bell, etc…… You will not race without a specified helmet.
Gloves and Face shields required.
Jackets: Leather or Heavyweight abrasion resistant vinyl mandatory. Also full length pants and high top shoes or boots required.
Nomex or equivalent fire retardant suit is required in all Winged Outlaw classes.
Neck Collars: Racing Neck collars are required in all classes
Rib Protectors: IKF/WKA Rib Protectors are HIGHLY RECOMMENDED (Not Mandatory)
CHAIN GUARDS: Must have aluminum, steel or equivalent material chain guard by clutch and then extend chain guard with safe material to protect drivers arm. Must be secured properly to protect driver from broken chain.
BALLAST: All non-structural weights added to meet minimum kart/driver weight requirements must be bolted securely to the kart. Carrying of ballast on the driver’s person is prohibited. Bolts of minimum 5/16” diameter must be utilized to secure weights, cotter-keyed or double-nutted. No weight shall be bolted to the underside of the kart. Where weight is attached directly to the seat of a kart, a large diameter, metal fender washer must be used for reinforcement. A maximum of 5 lbs. per bolt is allowed. Any driver who loses weight on the track will be disqualified. Ballast weights must be painted white with kart number inscribed. Tape, hose clamps, ty-wraps or fasteners other than bolts are not legal for attaching ballast weights to karts.
NUMBERS: Black on white number panels are recommended but not required as long as sharply contrasting colors(clearly visible to judges) are used. (4) Numbers must be a minimum of 6” high and must be on front, rear and both sides of kart. All edges shall be rolled, folded under or protected with rubber or comparable material edging for maximum protection. All panels shall be attached in a safe manner and shall be subject to rigid technical inspection.
BRAKES: All karts shall have pedal operated brakes, operating in such a manner as to brake both rear wheels equally and adequately. No scrub-type brakes permitted. All brake caliper bolts, master cylinder bolts and master cylinder roll pins must be cotter pinned or safety-wired. All bolts that hold non-captive brake pucks shall be safety-wired so that the bolt cannot unscrew, allowing the brake puck to fall out. The foot operation requirements may be waived for physically challenged drivers.
SAFETY SHUT OFF: Every engine must have a plastic ty-wrap on plug wire within easy reach of driver. We would like Jr. Wing karts to have kill switch within reach of driver.
SIGNALING: All Drivers must raise their hand to warn other drivers they are exiting the track. Exiting the track or re-entering the racing surface during a race event must be done in a safe manner or that driver will be penalized. Judges decision is FINAL!
FUEL & OIL: MUST BE DISPOSED OF IN THE PROVIDED WASTE OIL BARRELS!
FIRE EXTINGUISHERS: ALL PARTICIPANTS MUST HAVE A WORKING FIRE EXTINGUISHER IN THEIR PIT AREA!
All General track rules also apply!