Post by Evolution on Nov 15, 2011 18:25:10 GMT -6
Extreme Pro-Modified Division Rules
1) Body
A. The main body structure can be made from wood or other materials.
B. The car body may be enhanced by the addition of other stable materials such as plastic or metal. Any additions must be firmly attached and meet car size requirements.
2) Car Specs
A. Width- Not to exceed 2 3/4 inches
B. Length- Not to exceed 7 inches
C. Weight- Not to exceed 5.0 ounces (143 grams) on a scale accurate to 1/10 ounce
D. Height- Not to exceed 2 3/4 inches
E. Center Rail Clearance- The center rail width is 1 5/8", the wheels must clear center rail and must be on the outside of the rail
F. Bottom Clearance- Car must be built to clear the track center rail. The height of the center rail on the track is 1/4" tall.
G. Wheelbase –No wheelbase restrictions.
H. The following modifications are prohibited
1. Having any part of the car go beyond the starting peg
2. Starting devices or propellants (car must be gravity powered)
3. Electronic or lighting devices
4. Liquids, wet paint, oil, sticky substances or powders of any kind (other than lubrication)
5. Glass or excessively fragile parts
6. Loose objects on car
7. Magnets
3) Wheels
A. Wheels not to exceed a Maximum 31mm diameter.
B. Wheels must be constructed of plastic, rubber, or polyurethane.
C. Wheel hubs may be made of metal, but may never come in direct surface contact with the track
(Wheels will be checked with a digital caliber and a post race inspection including removing wheels and axles from the car if needed, race director decision is final )
4) Axles
A. No minimum diameter
B. Nail, pin, or solid rod type axles are allowed (BSA, DerbyWorx, Derby Evolution, ect.)
C. Grooves and modification of the axles is allowed
D. Wheel bearing axles are allowed
5) Lubricants
A. Approved lubricants includes (but is not limited to) graphite, Teflon, nyoil, and krytox.
B. Over application of lubricant which results in excessive shedding onto the track surface is not allowed.
6) Reasons for disqualification
A. Failure to meet race requirements and/or rules
B. If any part of the car interferes with another car
C. If your car leaves it's lane and interferes with another car
D. If your car is causing damage to the track or stop section
1) Body
A. The main body structure can be made from wood or other materials.
B. The car body may be enhanced by the addition of other stable materials such as plastic or metal. Any additions must be firmly attached and meet car size requirements.
2) Car Specs
A. Width- Not to exceed 2 3/4 inches
B. Length- Not to exceed 7 inches
C. Weight- Not to exceed 5.0 ounces (143 grams) on a scale accurate to 1/10 ounce
D. Height- Not to exceed 2 3/4 inches
E. Center Rail Clearance- The center rail width is 1 5/8", the wheels must clear center rail and must be on the outside of the rail
F. Bottom Clearance- Car must be built to clear the track center rail. The height of the center rail on the track is 1/4" tall.
G. Wheelbase –No wheelbase restrictions.
H. The following modifications are prohibited
1. Having any part of the car go beyond the starting peg
2. Starting devices or propellants (car must be gravity powered)
3. Electronic or lighting devices
4. Liquids, wet paint, oil, sticky substances or powders of any kind (other than lubrication)
5. Glass or excessively fragile parts
6. Loose objects on car
7. Magnets
3) Wheels
A. Wheels not to exceed a Maximum 31mm diameter.
B. Wheels must be constructed of plastic, rubber, or polyurethane.
C. Wheel hubs may be made of metal, but may never come in direct surface contact with the track
(Wheels will be checked with a digital caliber and a post race inspection including removing wheels and axles from the car if needed, race director decision is final )
4) Axles
A. No minimum diameter
B. Nail, pin, or solid rod type axles are allowed (BSA, DerbyWorx, Derby Evolution, ect.)
C. Grooves and modification of the axles is allowed
D. Wheel bearing axles are allowed
5) Lubricants
A. Approved lubricants includes (but is not limited to) graphite, Teflon, nyoil, and krytox.
B. Over application of lubricant which results in excessive shedding onto the track surface is not allowed.
6) Reasons for disqualification
A. Failure to meet race requirements and/or rules
B. If any part of the car interferes with another car
C. If your car leaves it's lane and interferes with another car
D. If your car is causing damage to the track or stop section