RULES & REGULATIONS
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PRO CLASS P.G.
[PRO GAS]
Designation: “PG” followed by bike number.Reserved for alcohol, gas burning dragsters, built specifically for all out drag racing.
Requirements and Specifications
- ENGINE
Engine: Must keep design features of V-Twin engines (45° to 90° V-Twin). Aftermarket heads are legal, including 4 valve. Crankcase and all tanks containing fluids must have vent tubes routed to catch can or have a spill breather system on motorcycle. Engine restraint systems are recommended for nitrous engine. Chest protectors are recommended. Scatter-shield or ballistic blanket required on superchargers.
UNLIMITED cu.i. - Gasoline or alcohol. Normally aspirated carburetor(s) or fuel injection is allowed. No nitrous oxide or other supplemental fuels or oxidizers.
160 cu.i. - Gasoline or alcohol, single or double engines, carburetor or fuel injection. Nitrous oxide OR supercharger OR turbocharger (any one of these).
122 cu.i. - Gasoline or alcohol, any induction system, nitrous oxide allowed.
- DRIVE TRAIN
Chain Guard: Chain and belt guards are mandatory. Must cover top run of drive. Guard must be .060-inch steel or 1/8 inch aluminum.
Transmission: Any type transmission may be used. Any type clutch, belt drives, air shift, etc. are legal. (Clutch must have strong protective covering.) Guard must be .060 steel or 1/8 inch aluminum. Transmissions and clutches must exhibit good engineering practices and may require data to be submitted for approval.
- SUSPENSION AND BRAKES
Brakes: Hydraulic type, front and rear, mandatory. Minimum size is 9-inch diameter, 1/8-inch thickness for rotors.
Controls: Handlebar controls must be located in safe, workable position. Foot pegs and foot controls must be located in safe, workable position and must be mounted in a safe, craftsman-like manner. Lanyard kill switch is mandatory.
Suspension: Front suspension minimum size 32 mm and minimum travel of 2 inches. Steering dampeners are mandatory. Rear suspension not necessary.
- FRAME
Frame: Aftermarket frames permitted. Steering head angle may not be less than stock rake. All frame components, except braces, brackets and gussets, must be manufactured from minimum 1.00 inch x 0.58 inch 4130 chrome moly tubing. All welding must be done by approved heliarc process. All frames must have stops that limit turning arc to 28 degrees. Stop must have a sheer strength equal to a 3/8-inch bolt. All butt welds must have visible reinforcement. Plating of frame prohibited. Painting permitted.
Ground Clearance: Minimum of 2 inches with rider on motorcycle and 10 p.s.i. in rear tire (includes exhaust and kickstand).
Wheel Base: Unlimited.
Wheelie Bars: Wheelie bars are required. Minimum length from center of rear axle to center of Wheelie bar axle must equal at least 70% of wheelbase.
- WHEELS AND TIRES
Tires: Must be specified for racing use by manufacturer. 12-inch wide rear tire is maximum limit.
Wheels: Rear wheel minimum 15 inch, maximum 18 inch. Front wheel minimum 16 inch, maximum 19 inch.
- BODY
Body: No body parts are necessary, except rear fender that must cover width of tire and extend past the rear axle.
Fairing: Are legal. Must be mounted solidly to frame tubes.
Seat: Seat, tail section and rear fender may be incorporated into one unit and must include a step to prevent rider sliding backward.
- ELECTRICAL
Ignition: Any ignition system is allowed.
Charging System: Not necessary.
Starting System: Must be electric onboard or external starter. Battery top covers are required. No rollers. No push starts. Jackstands are mandatory for starting motorcycles with slipper clutches. No dry hops in pits.
Control Switches: Must be mounted and constructed in a safe, craftsman-like manner. Must have an emergency kill switch.
Computers: Only data gathering computers are allowed.
Lights: Not necessary.
- RIDER
Credentials: Valid AHDRA 6.90 competitor license.
Helmet: Full coverage helmets only! Must be Snell-2000 or ECE 22.05 approved. Eye protection required.
Protective Clothing: Full finger leather gloves with knuckle armor and palm reinforcement, one piece or full circumference zippered leather suit with knee, elbow and shoulder armor or reinforcement, spine/back protector and above the ankle leather boots with toe area reinforcement are required.
Race Team Clothing: All team crewman that help start, assist in burnout and stage race motorcycle must wear a uniform shirt that relates to their specific team.
- TECH
Tech: All motorcycles must be teched in before practice. Motorcycle, rider and his protective gear must be present at tech area. Tech official will have final say on any unclear rule or equipment.