DEFINITIONS

The following definitions and abbreviations are adopted for use in these Rules.

1. AMA: American Motorcyclist Association

2. Aftermarket: Produced by manufacturer or fabricator other than original equipment manufacturer.

3. Ballast: Ballast is defined as any component attached to any part of the motorcycle, whose sole purpose is to add weight to the motorcycle.

4. cc: Cubic centimeters.

5. Datalog: Any device which records and/or monitors any operation or function of any or all parts of the motorcycle while it is running.

6. Displacement: The space covered or volume swept out by the piston at each stroke.

7. Disqualification: Unless otherwise defined will mean the forfeiture of all awards, prizes and points earned in all events during that day’s meet. Also referred to as DQ.

8. DOT: United States Department of Transportation

9. Event: Any one of the races in a meet.

10. Field Size: Number of bikes in competition after final qualifying.

11. Homologation: AMA approval process initiated by manufacturers or distributors of motorcycles. Only approved motorcycles may be utilized in most types of AMA competition.

12. Manufacturer: The original manufacturer of the motorcycle or part in question and not the distributor.

13. Model: A reference to a particular year and name assigned by manufacturers to certain motorcycles.

14. OEM: Original Equipment Manufacturer. Stock OEM , as referred parts in a non-modified state as they came off the assembly line, not factory aftermarket parts. Modified OEM, stock parts with modifications.

15. Participant: Every rider, club, association, company, promoter, team, and all other persons participating or in any way connected with an AMA Dragbike event. Also contestant or rider.

16. Pit Crew: Mechanic and/or assistants.

17. Pits: Designated area directly adjacent to racetrack that includes staging area.

18. Promoter: Any person or number of persons, companies, corporation or club holding, proposing to hold, or organizing a meet.

19. Qualify: To advance to the final eliminations.

20. Race: Competition in which two riders compete against each other.

21. Racetrack: The actual racing surface and shutdown areas of competition where motorcycles are permitted.

22. Restricted Area: Access is limited to pit crews and officials with appropriate restricted area access credentials.

23. Rider: Any person who competes in a meet.

24. SEMA: Specialty Equipment Market Association.

25. Staging Area: The location where riders and machines are assembled prior to racing on the track.

26. Stock: Parts manufactured and delivered by the OEM, which are identical to the parts installed on the motorcycle by the OEM before retail sale.

27. Suspension: (with reference to penalties) The loss of all rights to compete as a rider or member of a pit crew for the stated period.

28. Tech Inspector: The technician who inspects all motorcycles and equipment of riders participating in a meet.

FORMULAS

Cubic Inch Displacement = CID
     bore x bore x stroke x 0.7854 x # of cyl.

Cubic Centimeters = CC
     bore x bore x stroke x 0.7854 x # of cyl. x 1000

Volumes:
     Volume (cc’s) of deck clearance = bore x bore x 12.87 x depth of deck clearance
     Volume (cc’s) of head gasket = bore x bore x 12.87 x thickness of head gasket

Compression Ratio:
     Comb Chamber cc’s + Gasket cc’s + Deck CI cc’s + (Displacement x 2.0483)
     Compression Ratio = _____________________
     Comb Chamber cc’s + Gasket cc’s + Deck CI cc’s
     4.0967 for 4-cyl

Circumference = π x diameter
Area of circle = π x radius2
Volume of cylinder = π x radius2 area x height

π = “pi” π = 3.1416 radius2 = radius x radius

Weights:
Oil 1 gallon = 7.0 pounds 1 qt = 1.75 pounds
Gas 1 gallon = 6.2 pounds 1 qt = 1.55 pounds
Water 1 gallon = 8.4 pounds 1 qt = 2.10 pounds

METRIC AND STANDARD CONVERSION

The metric system is a decimal system of measurements used in scientific work for measuring length, weight and volume. These basic units are modified with prefixes to express the units as larger or smaller quantities. Some of the common prefixes are:

Kilo: one thousand (1000)
Deci: one-tenth (0.1)
Centi: one-hundredth (0.01)
Milli: one-thousandth (0.001)
Micro: one-millionth (0.000001)

Length
1 Kilometer (km) = 1000 meters = 3,280.83 ft = .6215 mile 1 Meter (m) = 100 centimeters = 39.37 in = 1.09 yards 1 Decimeter (dm) = 3.937 inches 1 Centimeter (cm) = .3937 inch 1 mile = 1.609 kilometers 1 inch = 2.54 centimeters 1 yard = .91 meters 1 inch = 25.4 millimeters

Mass
1 kilogram (kg) = 1,000 grams = 2.2045855 pounds 1 pound = 453.6 grams 1 ounce = 28.35 grams 1 gram = 1000mg kilograms / 2.20 = pounds pounds x 2.20 = kilos

Volume
1 liter (l) = 1000 cubic centimeters (cc) = 61.025 cubic inches 1 cubic inch = 16.387 cubic centimeters