Rules - Long Lake Vintage Snowmobile Racing Association

2012 Rules
2012 One Lunger - 100 Rules

2012 Long Lake Vintage Snowmobile Racing Association Rules and Classes

Revised 9/6/2011
Contact Pete with any questions- 763.286.3283

General Rules for ALL classes:
(Please read these rules and understand them before you sign up.)

Tech inspections are mandatory at every race pre-tech and post -tech.
You must have a working tether cord.
Carbides of any length and may use UP to 1/2 inch on studs or stars. (If you run cleats they must be steel) no aluminum or titanium.
You must wear a full face helmet. Helmet must be properly secured.
Snow flap must touch snow/ice when on sled.
Tech may remove any sled that is unsafe at any time. If your BRAKES DON’T WORK LEAVE IT HOME!
Flack jacket and knee protection are recommended.
Clutches must have guards.
If you are in the top 3 in a final, you can and will be torn down for the techs. Any tear down REFUSALS will be disqualified and lose all points for the season. If you give tech or track officials any problems , you will be suspended from these races.
YOU MUST HAVE FUN. NO WHINING! Especially about free prizes!!!
We have the right to change the rules at any time.
If it is a fan cooled class you must run a fan and recoil.
You may run Race fuel or E- 85.
You will have to choose to run one or the other classes= Trophy or Pro stock. (HR and HD) You may not run both!

Classes 1 through 7 are for MONEY .TROPHY Classes, 8 through 17, trophy only.

1973 and older HR Pro Stock (No sachs 340 ss, c, or hirth 194r allowed in hr class)
1973 and older HD Pro stock
1980 and older Fan Cooled Single MOD (no jackshafts) MOD 1
1980 and older Free Air Single MOD (can run single cylinder- Liquid) MOD 2
1980 and older Open MOD- (single/ and or multi cylinder) MOD 3
1980 and older Open MOD, LIQUID (any cylinder) MOD 4
SPORTSMAN x500 (1996 & Older)
HR Trophy
HD Trophy
Youth (ages 12-15) (HR/ HD)
“School Kid” (age 16-18) (HR/ HD)
40+ (HR/HD)
50+(HR/HD)
Womens (HR/HD)
1970 & Older HR
1973 and Older TWIN cylinder 0-440cc, 1 carb
TWO man Buddy Class- does not carry season points. – stock single 73 or older

Classes 8 through 14 must run STOCK machines.

HR Pro Stock CLASS
1973 AND OLDER

$$ Money Class $$

Must be a production line model, fan cooled, single cylinder snowmobile that was manufactured in 1973 or before.

Drivers:

Must agree to all decisions made by officials, uncontested!!! ( No cry babies allowed!)
NO drug or alcohol use before or during races.
Must have a working tether cord and USE it.
Must wear a helmet and eye protection.
Your brakes must be in WORKING condition. (will be checked)

Engines:

Engines must remain stock, no grinding, porting, sandblasting, shaving on anything. Stock pistons or stock replacement, no cutting skirts.
(this will be checked)
Max overbore of 0.150”
These engines NOT ALLOWED in this class; sachs 340ss,c, hirth 194r.
Carb must be original or other diaphragm carb with 2 1/4 inch bolt pattern..
Primary Clutch stock 1976 and older or 94 c dusters allowed.
Exhaust and muffler must be stock or stock replacement. No tuners!
Engine must have a point style ignition. (no cdi)
Must have recoil.
No fuel pumps allowed unless it was factory with the sled.
Tear down will happen if techs decide to do so. Drivers may also put up $200.00 to have someone torn down if you have reason to believe that they are illegal. If they ARE illegal, you will get your money back. If they are LEGAL you will give them the $200.00 for the hassle.

Chassis:

1973 and older, no limited production or race chassis. NO jackshaft chassis.
Skis must be original or stock replacement. NO Aluminum! Spreaders are allowed. You CAN run carbides.
Fuel tanks should be original or same size.
You must run a hood.
NUMBERS must be 8” AND visible on BOTH sides. (Should be black and white) if we can’t see, we can’t score!
Suspension and track may be 1976 and older stock production and can be reinforced. You can also run 1976 and older chain cases in this class. No sno pro suspensions.
Snow flap must touch ice/snow with rider on machine.

Track:

Studs CAN measure a maximum of ½” max . Will be checked with gauges.
Any seat may be used and any handle bars.
You can change clutching springs, weights and gear ratios.
Brakes. May use hydraulic brake setup off of newer sled but must be mounted in stock location. No jack shaft chassis.

HD Pro Stock CLASS
1973 AND OLDER

$$ Money Class $$

Must be a production line model, fan cooled, single cylinder snowmobile that was manufactured in 1973 or before.

Drivers:

Must agree to all decisions made by officials, uncontested!!! ( No cry babies allowed!)
NO drug or alcohol use before or during races.
Must have a working tether cord and USE it.
Must wear a helmet and eye protection.
Your brakes must be in WORKING condition. (will be checked)

Engines:

Engines must remain stock, no grinding, porting, sandblasting, shaving on anything. Stock pistons or stock replacement, no cutting skirts.
(will be checked)
Max overbore of 0.150”
Carb must be original or other diaphragm carb with 2 15/16 inch bolt pattern.
Primary Clutch stock 1976 or older or 94 c dusters allowed.
Exhaust and muffler must be stock or stock replacement. No tuners!
Engine must have a point style ignition. (no cdi)
Must have recoil.
No fuel pumps allowed unless it was factory with the sled.
Tear down will happen if techs decide to do so. Drivers may also put up $200.00 to have someone torn down if you have reason to believe that they are illegal. If they ARE illegal, you will get your money back. If they are LEGAL you will give them the $200.00 for the hassle.

Chassis:

1973 and older no limited production or race chassis.( No jackshaft chassis.)
Skis must be original or stock replacement. NO Aluminum! Spreaders are allowed. You CAN run carbides.
Fuel tanks should be original or same size.
You must run a hood.
NUMBERS must be 8” AND visible on BOTH sides. (Should be black and white) If we can’t see, we can’t score!
Suspension and track may be 1976 and older stock production and can be reinforced. You also can run 1976 and older chain cases in this class. No Sno Pro suspensions.
Snow flap must touch ice/snow with rider on machine.

Track:

Studs CAN be a maximum of ½” highest point of your track. Will be checked with gauges.
Any seat may be used and any handle bars.
You can change clutching springs, weights and gear ratios.
Brakes; May use hydraulic brake setup off of newer sled but must be mounted in stock location. No jackshaft

1980 and Older FAN COOLED SINGLE MOD CLASS (MOD1)NO
JACKSHAFTS

$$ Money Class $$

Must be a production line model, FAN COOLED single cylinder snowmobile that was manufactured in 1980 or before.( no liquids cooled allowed)

Drivers:

Must agree to all decisions made by officials, uncontested!!! ( No cry babies allowed!)
NO drug or alcohol use before or during races.
Must have a working tether cord and USE it.
Must wear a helmet and eye protection.
Your brakes must be in WORKING condition. (will be checked)

Engines:

Engines must have a 1980 and older snowmobile bottom end
Carb may be any make and size.
Any clutch is allowed.
Any exhaust allowed.

Chassis:

Any 1980 and older chassis. (NO Sno Pros)
Skis of any type are allowed. You MUST have leaf springs.
Fuel tanks may be any size.
You must run a hood.
NUMBERS must be 8” AND visible on BOTH sides. (Should be black and white)
Suspension –any allowed.
Snow flap must touch ice/snow with rider on machine.

Track:

Studs CAN be a maximum of ½”above the highest point of your track. Will be checked with gauges.
Any track and suspension allowed.
Any seat may be used and any handle bars.
You can change clutching springs, weights and gear ratios.

1980 & Older Open MOD SINGLE Free Air Class (MOD 2)

$$Money Class $$

Must be a production line snowmobile that was manufactured in 1980 or before.

Drivers:

Must agree to all decisions made by officials, uncontested!!! ( No cry babies allowed!)
NO drug or alcohol use before or during races.
Must have a working tether cord and USE it.
Must wear a helmet and eye protection.
Your brakes must be in WORKING condition. (will be checked)

Engines:

Free air or fan cooled only
Any Clutch
Any Exhaust
Any Ignition.

Chassis:

1980 and older leaf spring chassis.
Skis- any
Fuel tanks may be any size.
You must run a hood.
NUMBERS must be 8” AND visible on BOTH sides. (Should be black and white)
Suspension- any
Snow flap must touch ice/snow with rider on machine.

Track:

Studs CAN be up to ½” above the highest point of your track. Will be checked with gauges.
Any seat may be used and any handle bars.
You can change clutching springs, weights and gear ratios.

1980 & Older Open FREE AIR OPEN (MOD 3)
Single cylinder liquids allowed

$$Money Class$$

Must be a production line snowmobile that was manufactured in 1980 or before.

Drivers:

Must agree to all decisions made by officials, uncontested!!! ( No cry babies allowed!)
NO drug or alcohol use before or during races.
Must have a working tether cord and USE it.
Must wear a helmet and eye protection.
Your brakes must be in WORKING condition. (will be checked)

Engines:

Must be LOUD and FAST!
Any Clutch
Any Exhaust
Any Ignition.

Chassis:

1980 and older leaf spring chassis.
Skis- any
Fuel tanks may be any size.
You must run a hood.
NUMBERS must be 8” AND visible on BOTH sides. (Should be black and white)
Suspension- any
Snow flap must touch ice/snow with rider on machine.

Track:

Studs can be up to ½” above the highest point of your track. Will be checked with gauges.
Any seat may be used and any handle bars.
You can change clutching springs, weights and gear ratios.

1980 & Older Open MOD LIQUID (MOD 4)
Any cylinder

$$Money Class $$

Must be a production line snowmobile that was manufactured in 1980 or before.

Drivers:

Must agree to all decisions made by officials, uncontested!!! ( No cry babies allowed!)
NO drug or alcohol use before or during races.
Must have a working tether cord and USE it.
Must wear a helmet and eye protection.
Your brakes must be in WORKING condition. (will be checked)

Engines:

Must be LOUD and FAST and can be single, twin triple or four cylinder!!
Any Clutch
Any Exhaust
Any Ignition.
Liquid Cooled/ Free air may enter

Chassis:

1980 and older leaf spring chassis.
Skis- any
Fuel tanks may be any size.
You must run a hood.
NUMBERS must be 8” AND visible on BOTH sides. (Should be black and white)
Suspension- any
Snow flap must touch ice/snow with rider on machine.

Track:

Studs can be up to ½” above the highest point on the track. Will be checked with gauges.
Any seat may be used and any handle bars.
You can change clutching springs, weights and gear ratios.

SPORTSMAN x500 - 96 AND OLDER STANDARD PRODUCTION MODELS, (including Formula 340s)
No (Limited-Production) high performance sleds.

$$ Money Class $$

Sled MUST be and 1996 and OLDER- if it’s not, leave it at home….

Engine:

Engine brand must match chassis brand. 500cc max 1996 and older stock.
No reeds or exhaust valves, piston port only.
No internal modifications. May bore .150" over stock bore.
340cc may have porting and polishing with a .060 over stock bore.

Chassis:

No modifications (except) Yamaha cross members may be modified to meet the 40" rule 1996 and older
Windshield and headlight, may be altered or removed, reinforcing allowed, dash and unnecessary brackets may be removed.
Stock OEM hood and belly pan.
IGNITION - Stock OEM for the engine.
EXHAUST – Stock pipes only.
CARBURETOR - OEM for engine, original size. Air box may be removed.
CLUTCHES - Any OEM primary. OEM for the brand secondary. No roller secondary.
CHAINCASE - OEM for the model.
FRONT SUSPENSION - 40" maximum width between carbide centers. Springs, shocks, sway bars and link, radius rods and tie rods may be changed but must be fastened to stock location on bulkhead / tunnel. OEM for the model trailing arms, which may be modified to accept shocks, sway bar link and rear perch. 2.5" min. travel.
REAR SUSPENSION - OEM for the model components only, (except) any springs shocks, and limiters. Components may be moved, removed, relocated & modified.
TRACK - OEM or OEM replacement (width and length) rubber track in good condition. No racing tracks.
DRIVESHAFT, JACKSHAFT - Steel OEM for the model.
SKIS, STEERING, SEAT, FUEL TANK - Any.

HR Trophy
1973 AND OLDER

Trophy Only Class
Drivers can NOT run Trophy and Pro Classes!
Must be a production line model, fan cooled, single cylinder snowmobile that was manufactured in 1973 or before.

Drivers:

Must agree to all decisions made by officials, uncontested!!! ( No cry babies allowed!)
NO drug or alcohol use before or during races.
Must have a working tether cord and USE it.
Must wear a helmet and eye protection.
Your brakes must be in WORKING condition. (will be checked)

Engines:

Engines must remain stock, no grinding, porting, sandblasting, shaving on anything. Stock pistons or stock replacement, no cutting skirts.
(this will be checked)
Max overbore of 0.150”
These engines NOT ALLOWED in this class; sachs 340ss,c, hirth 194r.
Carb must be original or other diaphragm carb with 2 ¼ inch bolt pattern..
Primary Clutch stock 1976 and older or 94 c dusters allowed.
Exhaust and muffler must be stock or stock replacement. No tuners!
Engine must have a point style ignition. (no cdi)
Must have recoil.
No fuel pumps allowed unless it was factory with the sled.
Tear down will happen if techs decide to do so. Drivers may also put up $200.00 to have someone torn down if you have reason to believe that they are illegal. If they ARE illegal, you will get your money back. If they are LEGAL you will give them the $200.00 for the hassle.

Chassis:

1973 and older, no limited production or race chassis. NO jackshaft chassis.
Skis must be original or stock replacement. NO Aluminum! Spreaders are allowed. You CAN run carbides.
Fuel tanks should be original or same size.
You must run a hood.
NUMBERS must be 8” AND visible on BOTH sides. (Should be black and white) if we can’t see, we can’t score!
Suspension and track may be 1976 and older stock production and can be reinforced. You can also run 1976 and older chain cases in this class. No sno pro suspensions.
Snow flap must touch ice/snow with rider on machine.

Track:

Studs CAN measure a maximum of ½” above the highest point of your track or close to it. Will be checked with gauges.
Any seat may be used and any handle bars.
You can change clutching springs, weights and gear ratios.
Brakes. May use hydraulic brake setup off of newer sled but must be mounted in stock location. No jack shaft chassis.
HD Trophy

1973 AND OLDER

Trophy Only Class
Drivers can NOT run both Trophy and Pro Class.

Must be a production line model, fan cooled, single cylinder snowmobile that was manufactured in 1973 or before.

Drivers:

Must agree to all decisions made by officials, uncontested!!! ( No cry babies allowed!)
NO drug or alcohol use before or during races.
Must have a working tether cord and USE it.
Must wear a helmet and eye protection.
Your brakes must be in WORKING condition. (will be checked)

Engines:

Engines must remain stock, no grinding, porting, sandblasting, shaving on anything. Stock pistons or stock replacement, no cutting skirts.
(will be checked)
Max overbore of 0.150”
Carb must be original or other diaphragm carb with 2 15/16 inch bolt pattern.
Primary Clutch stock 1976 or older or 94 c dusters allowed.
Exhaust and muffler must be stock or stock replacement. No tuners!
Engine must have a point style ignition. (no cdi)
Must have recoil.
No fuel pumps allowed unless it was factory with the sled.
Tear down will happen if techs decide to do so. Drivers may also put up $200.00 to have someone torn down if you have reason to believe that they are illegal. If they ARE illegal, you will get your money back. If they are LEGAL you will give them the $200.00 for the hassle.

Chassis:

1973 and older no limited production or race chassis.( No jackshaft chassis.)
Skis must be original or stock replacement. NO Aluminum! Spreaders are allowed. You CAN run carbides.
Fuel tanks should be original or same size.
You must run a hood.
NUMBERS must be 8” AND visible on BOTH sides. (Should be black and white) If we can’t see, we can’t score!
Suspension and track may be 1976 and older stock production and can be reinforced. You also can run 1976 and older chain cases in this class. No Sno Pro suspensions.
Snow flap must touch ice/snow with rider on machine.

Track:

Studs CAN be a maximum of ½” highest point of your track. Will be checked with gauges.
Any seat may be used and any handle bars.
You can change clutching springs, weights and gear ratios.
Brakes; May use hydraulic brake setup off of newer sled but must be mounted in stock location. No jackshaft

WOMENS CLASS
1973 AND OLDER (HR/ and HD may run in this class)

~ Trophy only class~

Must be a production line model, fan cooled, single cylinder snowmobile that was manufactured in 1973 or before.

Drivers:

Ladies class only…(sorry guys)
Must agree to all decisions made by officials, uncontested!!! ( No cry babies allowed!)
NO drug or alcohol use before or during races.
Must have a working tether cord and USE it.
Must wear a helmet and eye protection.
Your brakes must be in WORKING condition. (will be checked)

Engines:

Engines must remain stock, no grinding, porting, sandblasting, shaving on anything. Stock pistons or stock replacement, no cutting skirts.(will be checked)
Max overbore of 0.150”
Any stock class sled may run. No twins
Carb must be original or other diaphragm carb with 2 15/16 inch bolt pattern or smaller.
Primary Clutch stock 1976 or older or 94 c dusters allowed.
Exhaust and muffler must be stock or stock replacement. No tuners!
Engine must have a point style ignition. (no cdi)
Must have recoil.
No fuel pumps allowed unless it was factory with the sled.
Tear down will happen if techs decide to do so. Drivers may also put up $200.00 to have someone torn down if you have reason to believe that they are illegal. If they ARE illegal, you will get your money back. If they are LEGAL you will give them the $200.00 for the hassle.

Chassis:

1973 and older, no limited production or race chassis, none jackshaft.
Skis must be original or stock replacement. NO Aluminum! Spreaders are allowed. You CAN run carbides.
Fuel tanks should be original or same size.
You must run a hood.
NUMBERS must be 8” AND visible on BOTH sides. (Should be black and white)
Suspension, track, and chain case may be 1976 and older stock production.
Snow flap must touch ice/snow with rider on machine.

Track:

Studs CAN measure up to 1/2” about highest point of your track. Will be checked with gauges.
Any seat may be used and any handle bars.
You can change clutching springs, weights and gear ratios.
Brakes. May use hydraulic brake setup off of newer sled but must be mounted in stock location. No jackshaft chassis.

YOUTH
1973 AND OLDER ( HR and HD may run in this class)

~Trophy Only Class~

Must be a production line model, fan cooled, single cylinder snowmobile that was manufactured in 1973 or before.

Drivers:

Drivers must be 12 to 15 years of age with a signed minor release form.
Must agree to all decisions made by officials, uncontested!!! ( No cry babies allowed!)
NO drug or alcohol use before or during races.
Must have a working tether cord and USE it.
Must wear a helmet and eye protection.
Your brakes must be in WORKING condition. (will be checked)

Engines:

Engines must remain stock, no grinding, porting, shaving on anything. Stock pistons or stock replacement, no cutting skirts.
(will be checked)
Max overbore of 0.150”
Any stock class sled may run. No twins
Carb must be original or other diaphragm carb with 2 15/16 inch bolt pattern or smaller.
Primary Clutch stock 1976 or older or 94 c dusters allowed.
Exhaust and muffler must be stock or stock replacement. No tuners!
Engine must have a point style ignition. (no cdi)
Must have recoil.
No fuel pumps allowed unless it was factory with the sled.
Tear down will happen if techs decide to do so. Drivers may also put up $200.00 to have someone torn down if you have reason to believe that they are illegal. If they ARE illegal, you will get your money back. If they are LEGAL you will give them the $200.00 for the hassle.

Chassis:

1973 and older, no limited production or race chassis, none jackshaft chassis.
Skis must be original or stock replacement. NO Aluminum! Spreaders are allowed. You CAN run carbides.
Fuel tanks should be original or same size.
You must run a hood.
NUMBERS must be 8” AND visible on BOTH sides. (Should be black and white)
Suspension, track and chain case may be 1976 and older stock production. No sno pro suspensions.
Snow flap must touch ice/snow with rider on machine.

Track:

Studs CAN measure up to ½ above the highest point of your track. Will be checked with gauges.
Any seat may be used and any handle bars.
You can change clutching springs, weights and gear ratios.
Brakes. May use hydraulic brake setup off of newer sled but must be mounted in stock location. No jackshaft chassis.
“School Kid”- New 2012 Class

1973 AND OLDER( HR and HD may run in this class)

~Trophy Only Class~

Must be a production line model, fan cooled, single cylinder snowmobile that was manufactured in 1973 or before.

Drivers:

Drivers must be 16-18 of age with a signed minor release form.
Must agree to all decisions made by officials, uncontested!!! ( No cry babies allowed!)
NO drug or alcohol use before or during races.
Must have a working tether cord and USE it.
Must wear a helmet and eye protection.
Your brakes must be in WORKING condition. (will be checked)

Engines:

Engines must remain stock, no grinding, porting, shaving on anything. Stock pistons or stock replacement, no cutting skirts.
(will be checked)
Max overbore of 0.150”
Any stock class sled may run. No twins
Carb must be original or other diaphragm carb with 2 15/16 inch bolt pattern or smaller.
Primary Clutch stock 1976 or older or 94 c dusters allowed.
Exhaust and muffler must be stock or stock replacement. No tuners!
Engine must have a point style ignition. (no cdi)
Must have recoil.
No fuel pumps allowed unless it was factory with the sled.
Tear down will happen if techs decide to do so. Drivers may also put up $200.00 to have someone torn down if you have reason to believe that they are illegal. If they ARE illegal, you will get your money back. If they are LEGAL you will give them the $200.00 for the hassle.

Chassis:

1973 and older ,no limited production or race chassis, none jackshaft chassis.
Skis must be original or stock replacement. NO Aluminum! Spreaders are allowed. You CAN run carbides.
Fuel tanks should be original or same size.
You must run a hood.
NUMBERS must be 8” AND visible on BOTH sides. (Should be black and white)
Suspension, track and chain case may be 1976 and older stock production. No sno pro suspensions.
Snow flap must touch ice/snow with rider on machine.

Track:

Studs CAN measure up to ½ above the highest point of your track. Will be checked with gauges.
Any seat may be used and any handle bars.
You can change clutching springs, weights and gear ratios.
Brakes. May use hydraulic brake setup off of newer sled but must be mounted in stock location. No jackshaft chassis.
40+

1973 AND OLDER ( HR and HD may run in this class)

~Trophy only classes~

Must be a production line model, fan cooled, single cylinder snowmobile that was manufactured in 1973 or before. You can run any stock single cylinder snowmobile in this class.

Drivers:

Drivers must be 40 years of age or over.
Must agree to all decisions made by officials, uncontested!!! ( No cry babies allowed!)
NO drug or alcohol use before or during races.
Must have a working tether cord and USE it.
Must wear a helmet and eye protection.
Your brakes must be in WORKING condition. (will be checked)

Engines:

Engines must remain stock, no grinding, porting, shaving on anything. Stock pistons or stock replacement, no cutting skirts.
(will be checked)
Max overbore of 0.150”
Any stock class sled may run. No twins
Carb must be original or other diaphragm carb with 2 15/16 inch bolt pattern or smaller.
Primary Clutch stock 1976 or older or 94 c dusters allowed.
Exhaust and muffler must be stock or stock replacement. No tuners!
Engine must have a stock ignition
No fuel pumps allowed unless it was factory with the sled.
Must have recoil.
Tear down will happen if techs decide to do so. Drivers may also put up $200.00 to have someone torn down if you have reason to believe that they are illegal. If they ARE illegal, you will get your money back. If they are LEGAL you will give them the $200.00 for the hassle.

Chassis:

1973 and older, no limited production or race chassis, none jackshaft chassis.
Skis must be original or stock replacement. NO Aluminum! Spreader are allowed. You CAN run carbides.
Fuel tanks should be original or same size.
You must run a hood.
NUMBERS must be 8” AND visible on BOTH sides. (Should be black and white)
Suspension , Track and chain case may be 1976 and older stock production .No sno pro suspensions.
Snow flap must touch ice/snow with rider on machine.

Track:

Studs CAN measure up to 1/2” above the highest point of your track. Will be checked with gauge.
Any seat may be used and any handle bars.
You can change clutching springs, weights and gear ratios.
Brakes. May use hydraulic brake setup off of newer sled but must be mounted in stock location. No jackshaft chassis.

50+
1973 AND OLDER (HR and HD may run in this class)

~Trophy only classes~

Must be a production line model, fan cooled, single cylinder snowmobile that was manufactured in 1973 or before. You can run any stock single cylinder snowmobile in this class.

Drivers:

Drivers must be 50 years of age or over.
Must agree to all decisions made by officials, uncontested!!! ( No cry babies allowed!)
NO drug or alcohol use before or during races.
Must have a working tether cord and USE it.
Must wear a helmet and eye protection.
Your brakes must be in WORKING condition. (will be checked)

Engines:

Engines must remain stock, no grinding, porting, shaving on anything. Stock pistons or stock replacement, no cutting skirts.(will be checked)
Max overbore of 0.150”
Any stock class sled may run. No twins
Carb must be original or other diaphragm carb with 2 15/16 inch bolt pattern or smaller.
Primary Clutch stock 1976 or older or 94 c dusters allowed.
Exhaust and muffler must be stock or stock replacement. No tuners!
Engine must have a stock ignition.
No fuel pumps allowed unless it was factory with the sled.
Tear down will happen if techs decide to do so. Drivers may also put up $200.00 to have someone torn down if you have reason to believe that they are illegal. If they ARE illegal, you will get your money back. If they are LEGAL you will give them the $200.00 for the hassle.

Chassis:

1973 and older, no limited production or race chassis, none jackshaft chassis.
Skis must be original or stock replacement. NO Aluminum! Spreader are allowed. You CAN run carbides.
Fuel tanks should be original or same size.
You must run a hood.
NUMBERS must be 8” AND visible on BOTH sides. (Should be black and white)
Suspension , Track and chain case may be 1976 and older stock production .No sno pro suspensions.
Snow flap must touch ice/snow with rider on machine.

Track:

Studs CAN measure up to 1/2” max.
Any seat may be used and any handle bars.
You can change clutching springs, weights and gear ratios.
Brakes. May use hydraulic brake setup off of newer sled but must be mounted in stock location. No jackshaft chassis

1970 & Older HR CLASS

~Trophy Only Class~

(If rules do not specifically allow a change or modification, it then must be assumed that the change in NOT allowed.

Must be a production line model, fan cooled, single cylinder snowmobile that was manufactured in 1970 or before.

Arctic Cat- (no jackshafts) Panther Chassis Only. No performance options or kits.

Drivers:

Must agree to all decisions made by officials, uncontested!!! ( No cry babies allowed!)
NO drug or alcohol use before or during races.
Must have a working tether cord and USE it.
Must wear a helmet and eye protection.
Your brakes must be in WORKING condition. (will be checked)

Engines:

Engines must remain stock, no grinding, porting, shaving on anything. Stock pistons or stock replacement, no cutting skirts. (will be checked)
Max overbore of 0.150”
Must have been offered stock with the HR carb.
Carb must be original or other diaphragm carb 33 mm maximum bore.
No decreasing of any rotating mass.
Clutch may be replaced with; Comet 94 C Duster or Power Black.
Exhaust and muffler must be stock or stock replacement. No tuners!
Engine must have a point style ignition. (no cdi)
No fuel pumps allowed unless it was factory with the sled.
Tear down will happen if techs decide to do so. Drivers may also put up $200.00 to have someone torn down if you have reason to believe that they are illegal. If they ARE illegal, you will get your money back. If they are LEGAL you will give them the $200.00 for the hassle.

Chassis:

1970 and older, no limited production or race chassis, none jackshaft chassis.
Skis must be original or stock replacement. NO Aluminum! Spreader are allowed. You CAN run carbides.
Skis- no ski skins
Fuel tanks should be original or same size.
You must run a hood.
NUMBERS must be 8” AND visible on BOTH sides. (Should be black and white)
Suspension must all be original but can be reinforced.
Snow flap must touch ice/snow with rider on machine.

Track:

Studs CAN measure up to 1/2” max. Will be checked with gauges.
Cleated tracks must remain cleated if that is the way it was manufactured and vice-versa.
Any seat may be used and any handle bars.
You can change clutching springs, weights and gear ratios.

TWIN CLASS (0-440) 1 Carb

~Trophy Only Class~

Must be a production line model, fan cooled, twin cylinder snowmobile that was manufactured in 1973 or before. No limited production models. (No single cylinders allowed in this class)

Drivers:

Must agree to all decisions made by officials, uncontested!!! ( No cry babies allowed!)
NO drug or alcohol use before or during races.
Must have a working tether cord and USE it.
Must wear a helmet and eye protection.
Your brakes must be in WORKING condition. (will be checked)

Engines:

Engines must remain stock, no grinding, porting, shaving on anything. Stock pistons or stock replacement, no cutting skirts.(will be checked)
Max overbore of 0.150”
Single carbs only (no twin carbs allowed)
Carb must be original or other diaphragm carb with 2 15/16 inch bolt pattern or smaller.
Primary Clutch stock 1976 or older or 94 c dusters allowed.
Exhaust and muffler must be stock or stock replacement. No tuners!
No fuel pumps allowed unless it was factory with the sled.
Engine must have a point style ignition. (no cdi)
Tear down will happen if techs decide to do so. Drivers may also put up $200.00 to have someone torn down if you have reason to believe that they are illegal. If they ARE illegal, you will get your money back. If they are LEGAL you will give them the $200.00 for the hassle.

Chassis:

1973 and older, no limited production or race chassis, none jackshaft chassis.
Skis must be original or stock replacement. NO Aluminum! Spreader are allowed. You CAN run carbides.
Fuel tanks should be original or same size.
You must run a hood.
NUMBERS must be 8” AND visible on BOTH sides. (Should be black and white)
Suspension , track and chain case may be 1976 and older stock production. No sno pro suspensions.
Snow flap must touch ice/snow with rider on machine.

Track

Studs CAN measure up to ½” above the highest point of your track. Will be checked with gauge.
Any seat may be used and any handle bars.
You can change clutching springs, weights and gear ratios.
Brakes may be hydraulic brake set up off of newer sled but must be mounted in stock location. No jackshaft chassis.

2012 One Lunger- 100
HD CLASS RULES
Revised 1/27/12

1973 and older, production line model with a single cylinder fan cooled motor.
NO CHANGES, Modification allowed UNLESS specified by these rules. If these rules do not specifically allow a change or modification, it is assumed that the change or modification is NOT allowed.

Drivers:

Must agree to all decisions made by officials, uncontested.
Must be 16 years of age or older.
NO drug or alcohol use before or during races.
Must have a working tether cord and USE it.
Must wear a helmet and eye protection.
Your brakes must be in WORKING condition. (will be checked)
Winners will be torn down at the end of the day.

Engines:

You may substitute any motor in your chassis if it was offered in that brand of sled any year.
I E: If it ever came with a Sachs you can run any Sachs single.
Engines must remain stock, no grinding, porting, sandblasting, shaving on anything. Stock pistons or stock replacement, no cutting skirts
Must have points style ignition- NO CDI’s.
Overbore .150 OR close to it
Carb- must be original or other diaphragm carb with 2 15/16 bolt pattern.
Clutch- An original, comet 94C Duster or Power Block with no decrease or rotating mass
Exhaust and muffler must be stock or stock replacement. Must be a can muffler and it may be reinforced. No tuners and no cutting open of the muffler.
Engine must have a point style ignition. (no cdi)

Chassis:

1973 and older and may use 1976 and older suspensions. Chain case and clutches must stay of the same brand of chassis. Aftermarket shocks are allowed. None Jackshaft Chassis allowed.
Skis must be original or stock replacement. No ski skins. Carbine runners and spreaders are allowed. You may use different manufacture skis but no Aluminum or aftermarket.
Fuel tanks should be original or same size. May use different tank as long as it is 1976 or aftermarket. Fuel tank must not exceed 5 gallons.
You must run a hood- Does not need to be original.
NUMBERS must be 8” AND visible on BOTH sides. (Should be black and white) if we can’t see, we can’t score!
Snow flap must touch ice/snow with rider on machine.

Track:

Studs can measure up to 1/2” about highest point of your track. Will be checked with gauges.
Tracks may be replaced with a new track of the same length.
Any seat may be used and any handle bars.
You can change clutching springs, weights and gear ratios. You may use Ice Scratchers for your slide suspension.
Brakes. May use hydraulic brake setup off of newer sled but must be mounted in stock location.

2012 One Lunger- 100
HR CLASS RULES

Drivers:

Must agree to all decisions made by officials, uncontested.
Must be 16 years of age or older.
NO drug or alcohol use before or during races.
Must have a working tether cord and USE it.
Must wear a helmet and eye protection.
Your brakes must be in WORKING condition. (will be checked)
Winners will be torn down at the end of the day.

Engines:

You may substitute any motor in your chassis if it was offered in that brand of sled any year.
I E: If it ever came with a Sachs you can run any Sachs single.
Engines must remain stock, no grinding, porting, sandblasting, shaving on anything. Stock pistons or stock replacement, no cutting skirts
Must have points style ignition- NO CDI’s.
Overbore .150” OR Close to it
Carb- must be original or other diaphragm carb with 2 1/4 inch bolt pattern.
Clutch- An original, comet 94C Duster or Power Block with no decrease or rotating mass
Exhaust and muffler must be stock or stock replacement. Must be a can muffler and it may be reinforced. No tuners and no cutting open of the muffler.
Engine must have a point style ignition. (no cdi)

Chassis:

1973 and older and may use 1976 and older suspensions. Chain case and clutches must stay of the same brand of chassis. Aftermarket shocks are allowed. None jackshaft chassis.
Skis must be original or stock replacement. No ski skins. Carbine runners and spreaders are allowed. You may use different manufacture skis but no Aluminum or aftermarket.
Fuel tanks should be original or same size. May use different tank as long as it is 1976 or aftermarket. Fuel tank must not exceed 5 gallons.
You must run a hood- Does not need to be original.
NUMBERS must be 8” AND visible on BOTH sides. (Should be black and white) if we can’t see, we can’t score!
Snow flap must touch ice/snow with rider on machine.

Track:

Studs can measure up to ½” from the highest point of your track. Will be checked with gauge.
Track may be replaced with a new track of the same length.
Any seat may be used and any handle bars.
You can change clutching springs, weights and gear ratios.
Brakes- may use hydraulic brake setup off of newer sled but must be mounted in stock location.

2012 One Lunger- 100
RELIC CLASS RULES

*SEE REVISION FOR CHASIS**1/27/12

Drivers:

Must agree to all decisions made by officials, uncontested.
Must be 16 years of age or older.
NO drug or alcohol use before or during races. (Toad)
Must have a working tether cord and USE it.
Must wear a helmet and eye protection.
Your brakes must be in WORKING condition. (will be checked)
Winners may be torn down at the end of the day.

Engines:

Motor must meet chassis.
Motors not allowed: Yamaha, Kawaski ,Hirth 338, Sachs sa290c, sa290ss, sa290R, sa320,sa340SS, sa340C, sa340 chrome bore, sa340ss chrome bore, 250 polaris, sa340R, sa368 with HD carb, sa400, JLO 290R/ 340R, Rotax 292 TNT and 340 TNT
Engines must remain stock, no grinding, porting, sandblasting, shaving on anything. Stock pistons or stock replacement, no cutting skirts
Must have points style ignition- NO CDI’s.
Carb- must be HR size car or smaller. You can replace an HD carburated motor with and HR as long as the motor is within the acceptable motors list. Example- a 69 Panther can run a 368 sachs but the card has to be changed to an HR size.
Clutch- An original, comet 94C Duster or Power Block. Clutches must remain STOCK, no changing to aluminum or lightening any of the stock components of the clutch, besides the normal weights and springs. No decreasing of rotating mass.
Exhaust and muffler must be stock or stock replacement. Must be a can muffler and it may be reinforced. No tuners and no cutting open of the muffler.
Engine must have a point style ignition. (no cdi)

Chassis:

1973 and older. No limited production or race chassis, None jackshaft chassis.
ARCTIC CAT - PANTHER CHASIS ONLY
Skis must be original or stock replacement. Carbide runners are allowed.
Fuel tanks must be original and in original location.
You must run a hood must be original.
NUMBERS must be 8” AND visible on BOTH sides. (Should be black and white) if we can’t see, we can’t score!
Snow flap must touch ice/snow with rider on machine.

Track:

Studs can measure up to 1/2” max at highest point of your track. Will be checked with gauge.
Track may be replaces with a new track of the same length.. Cleated tracks must remain cleated, rubber must remain rubber.
Seats and handlebars can be changers.
You may change gear ratio, clutch weights and springs.
You may paint sled or use decals to make it look faster.

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