Albright Shores 2007 Vintage Classes, Rules

** SINGLE CYLINDER ONLY

120 Kitty Cat

SINGLE CYLINDER
Stock HR (If not enough move to Stock HD or HR)
· 1975 and older
· Engine must match frame for that model; Engine Fan Cooled; No Reed Valve or Free Air
· Carburetor must match engine; HR size (Tillotson; Walbro; and Kiehn Carbs only)
· Stock Exhaust; Stock Suspension; and Stock Clutching
· Upgraded leaf spring skis allowed; up to three-inch max ski spreaders OK

Stock HD (If not enough move to HD)
· 1975 and older
· Engine must match frame for that model; Engine Fan Cooled; No Reed Valve or Free Air
· Carburetor must match engine; HD size (Tillotson; Walbro; and Kiehn Carbs only)
· Stock Exhaust; Stock Suspension; and Stock Clutching
· Upgraded leaf spring skis allowed; up to three-inch max ski spreaders OK

HR Improved & HD Improved
A 400cc Max/1975 date year and older/STOCK single
cylinder/ motors/Improved
suspension allowed/pipe or can allowed/clutches may be
up-graded (Powerbloc & Comet 94c or 102’s)/ Carburetor
adapters allowed/any Carburetor Aluminum ski’s may be
used max of 3in ski spreaders

OPEN SINGLE
400 cc Max/1975 date year and older/Anything Goes

tether switch must be mounted to something solid not plastic or fiberglass

VINTAGE TWIN CLASS

All Stock Classes rules are
Stock,single canned exhaust,no twin pipes; No
expansion chambers or “Performance” pipes No limited
race build or trail performance twin pipe sleds they will run in mod stock
Any Skis (spreaders 3" max)
Any snowmobile clutches –any snowmobile clutch
Stock suspension (Lube System OK)
Frame date stamped 1981 and Older
May not mix engine and chassis
Carburator Adapters NOT ALLOWED
Leaf Spring Sleds Only !

Class A 0-340cc F/C or F/A
Engine 0-340cc 1981 and older snowmobile engine

Class B 0-440cc F/C or F/A
Engine 0-440cc 1981 and older snowmobile engine

Class C 0-650cc F/C or F/A
Engine 0-650cc 1981 and older snowmobile engine
Only to run if minimum entries show

Class C1 0-500 cc L/C
Engine 500+ cc L/C 1981 and older snowmobile engine

Class D IFS Class
Frame date stamped 1982 and Older
May mix engine and chassis
Engine 0-440cc F/C, F/A, or L/C 1982 or older
snowmobile engine ONLY !
Any exhaust except no Megaphones
Any Skis
Any snowmobile clutches
Any suspension (Lube System OK)

Class X Michigan Frankenstein Monster Sled Class
(Exhibit Class as part of Vintage Races)
Must be snowmobile frame
Includes all Twin Tracks */Manta/Raider must have roll
bar protection. - Must also have full track enclosed
side panels
May mix engine and chassis
Any fuel delivery system
Any snowmobile engine, even 2006 engine OK.
Any exhaust except no Megaphones
Any Skis
Any snowmobile clutches
Any suspension (Lube System OK

Open Class

All Classes Rules Open only

Rules Open only

Any exhaust except no Megaphones

Any Skis (spreaders 3" max)

Any snowmobile clutches

Any suspension (Lube System OK)

Class A2 0-340cc Open

Frame date stamped 1981 and Older

May mix engine and chassis

Carb Adapters OK

Engine 0-340cc F/C, F/A, or L/C 1981 and older snowmobile engine

Class B2 0-440cc Open

Frame date stamped 1981 and Older

May mix engine and chassis

Carb Adapters OK

Engine 0-440cc F/C, F/A, or L/C 1981 and older snowmobile engine

Class C3 441-650cc open (limited running)

Mod Stock Classes MSA 340 & MSB 440

This class will only be used for sleds that have had a minor change to them such as a different carb /exhaust/ but have the correct type motor for the sled as listed in the Intertec manual or are limited build or Hi –performance rated

Class A 0-340cc

Class B 0-440cc

MUST HAVE MIN. 3 SLEDS TO MAKE A CLASS

ALL SAFETY RULES WILL APPLY {BRAKES, LIGHTS TAPED OR REMOVED WORKING TAIL LIGHT, CHEST PROTECTOR, HIGH VIS
ORANGE HELMET OR VEST, TETHER SWITCH ATTACHED TO FRAME, STUDS NO MORE THAN 3/8" PAST LUG, OVERALL SAFE SLED]