Novice class 2012-
Engine: Any color clone 6.5HP / 196CC engine (governor and governor linkage may be removed!)
** Engine internals must be stock and must meet 2011 IKF tech rules section .722
Restrictor plate required is .375 ARC Red Plate new for 2011!
** Stock muffler or AM(After Market) header ok, AM header .675 ID / .750OD, max length 15”, min length 10”, MUST have flare or flat washer welded to the end of the pipe, if using muffler on AM header it MUST be the RLV B-91 Mini muffler or the BS CM-2 AKRA muffler ONLY, muffler may not be modified in any way and must meet IKF / AKRA spec.
** All AM headers must be wrapped from 1” above mounting flange to within 1” of end of pipe or 1” from muffler mount
** AM mufflers must be secured to header with a strap and clamps or wired from end of muffler to engine
** Removal of oil sensor is allowed
** AM air filter and adapter allowed, must meet 2011 IKF spec
** Removal of top mounted fuel tank is allowed for safety, AM single stage fuel pump allowed, must be pulsed from rocker cover only
** Gasoline only 86-93 octane only, NO additives allowed** No ethanol fuel allowed
** 13Tooth 35 pitch clutch only, must be stamped steel drum without a removable gear. Two shoe type only
** 62Tooth rear sprocket only
** 35” maximum tire circumference on right rear
** Kart weight 235 Minimum
** No drivers fairings allowed
** No tachometers allowed
** All karts must comply with 2011 IKF - BODY and chassis rules
** All novice karts must have full width rear bumper ( center of LR tire to center of RR tire, MINIMUM)
** Engine claim $200, claim does not include header, air filter, filter adapter, clutch, chain guard, throttle linkage, engine top plate if used, clutch or engine mount
Any competitor in this class and every class may be teched for legallity at any time during a race night!
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.
Must have full width double rail rear bumpers with rounded corners and no sharp edges. Maximum can be no wider on either side than the narrowest set of tires.
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 M2000, Snell SA 2000, SFI 31.2, SFI 41.2 or newer standards. Drivers under the age of 12 must meet one of the above standards or the SFI 24.1 standard for youth helmets. 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!