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1980 and OLDER PRO STOCK CLASS |
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IN STOCK AND STOCK BASED CLASSES, NO CHANGES OR MODIFICATIONS ALLOWED UNLESS SPECIFICALLY ALLOWED BY THESE RULES. IF THESE RULES DO NOT SPECIFICALLY ALLOW A CHANGE OR MODIFICATION, THEN IT MUST BE ASSUMED THAT THE CHANGE OR MODIFICATION IS NOT ALLOWED. |
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1980 AND OLDER PRO STOCK CLASS
SNOWMOBILE ● Must be 1980 and older chassis and single cylinder fan cooled motor, any chassis/motor combination, may jump brands. DRIVERS● Must be 16 years of age or older. MOTOR REGULATION ● You may substitute any motor in your chassis as long as it is 1980 and older. ● Carb – Any brand or style. REED VALVES ARE ALLOWED. ● Exhaust & Muffler – Original or stock replacement (Must be a Can muffler) it may be reinforced. No Tuners and no cutting the muffler open. ● Motor must use a point’s style ignition (no CDI’s) ● You may modify your motor. CHASSIS REGULATIONS● 1980 & OLDER leaf spring chassis. May mix-match motors, chain cases, suspensions, etc. NO JACK SHAFTS. ● Skis – original or stock replacement. Carbide runners and spreaders are allowed. You may use different manufacturers’ skis. You may use aluminum. Aluminum skis are available at North Star Skis if interested or call Palokangas Skis. ● Snow flaps must touch ice/snow when rider is sitting. ● Fuel tanks – You may use any fuel tank. ● Hood – need not be original. ● 8” visible numbers on each side of hood, these numbers are used for lap counting purposes. IF THESE NUMBERS CAN NOT BE READ YOU MAY NOT BE COUNTED. ● Studs should measure 3/8” above the track, or as close as possible. ● You may add a hydraulic brake system in the original brake location. YOU MAY: ● Change gear ratio. ● Change clutch weights and springs. ● Change Seat / Handle Bars / Running Boards for driver comfort ● Replace your cleated track with a rubber track, or vice versa. ● Use Ice Scratchers for your slide suspension.
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