Limited Open Wheel Vehicle

DEFINITION

Limited 4 wheel single and two seat vehicles with trailing arm front suspension. Limited engine.

GENERAL REGULATIONS

Entrants in this class shall comply with all applicable general regulations.

TECHNICAL REGULATIONS

This class is an open class and all components will be considered open unless restricted herein.

NOTE: The TR abbreviations listed under this class (I.E. TR1 HELMETS) refer to TR cross reference listings in the front of this book. These TR cross-referenced listings are part of the class rules. Where a conflict occurs between the TR cross-referenced listing and a rule contained under this class, the rule contained under this class takes priority.

SAFETY EQUIPMENT

TR1 HELMETS

TR2 PROTECTIVE CLOTHING

TR3 EYE PROTECTION and DENTURES

TR4 HEAD AND NECK RESTRAINTS

TR5 FIRST AID KIT

TR6 EMERGENCY SIGNALING DEVICES

TR7 HORNS

TR8 REFLECTORS

TR9 FIRE SUPPRESSION EQUIPMENT

TR10 SURVIVAL SUPPLIES

SUSPENSION COMPONENTS

Front Suspension

Front suspension limited to VW type-1 beam/trailing arm configuration.

Beam and trailing arms may be of any manufacture.

Spindles may be of any manufacture.

All dimensions are open.

TR11 SHOCK ABSORBERS and BUMP STOPS

TR12 SECONDARY SUSPENSION

TR13 WHEELS and TIRES

TR14 FASTENERS

STEERING and BRAKE COMPONENTS

TR15 STEERING

TR16 BRAKES

ELECTRICAL SYSTEM

TR17 IGNITION

TR18 BATTERIES

TR19 LIGHTS

TR20 STARTERS

FUEL SYSTEM

TR21 FUEL

TR22 FUEL TANKS

TR23 FUEL FILLERS LINES, VENTS, and CAPS

Fuel cell mandatory.

ENGINE, TRANSMISSION and DRIVELINES

TR24 ENGINE and ENGINE DISPLACEMENT

VW type-1 air cooled engine with the following restrictions:

1. Maximum two valves per cylinder.
2. Single Seat vehicles limited to 1776cc maximum.
3. Two seat vehicles limited to 1835cc maximum.
4. One production automotive type carburetor with a maximum of two venturies.

Maximum venturi size is 42mm.

Low compression engine option

VW type-1 air cooled engine with a maximum compression of 9.0:1.

Single seat limited to 2110cc maximum.

Two seat limited to 2276cc maximum.

Bore and Stroke open.

Single Weber 44 IDF or EMPI HPMX 44 carburetor.

Maximum ventri size is 34mm.

Individual tube manifolds only. No plenum manifolds allowed.

Maximum intake runner tube size 1.750(1 3/4) inch OD.

OEM End Castings only, May be modified.

Any manufacturer VW head allowed.

Two(2) valves per cylinder.

Cam, valves, valve springs, and lifters are open.

Any non-roller rockers and rocker shafts allowed.

Ignition system open.

All engines must be mounted to the rear of the transmission.

TR25 ENGINE REPLACEMENT

TR26 TRANSMISSION

Open

TR27 THROTTLES

TR28 EXHAUST

TR29 DRIVE SHAFTS

TR30 FLYWHEEL SHIELDS

TR31 FLUID COOLERS

TR32 AUXILIARY EQUIPMENT

TR33 SUPERCHARGERS and TURBOCHARGERS

VEHICLE SAFETY EQUIPMENT

TR34 ROLL CAGES

TR35 SAFETY HARNESS

TR36 SAFETY NETS

TR37 SEATING

GENERAL VEHICLE COMPONENTS

TR38 DRIVERS COMPARTMENT

TR39 DOORS AND LATCHES

TR40 FIREWALLS

TR41 BALLAST

TR42 WEIGHT

Minimum weight 1500 pounds.

TR43 FLOORBOARDS

TR44 BUMPERS and HAZARDOUS PROTRUSIONS

TR45 MIRRORS

TR46 SKID PLATES

TR47 STORAGE

TR48 CHASSIS and BODY.

TR49 HOSES

TR50 IDENTIFICATION MARKINGS

Unlimited Off-Road Racing will assign race numbers.

TR51 ADVERTISING on VEHICLES

TR52 RADIO EQUIPMENT

TR53 WORKMANSHIP

TR54 TRACKING DEVICE