Pinewood derby racing

Race Classes And Rules

BASX, MA Xtreme and Unlimited Classes

Standard rules for all pinewood derby classes

  • Each builder may enter as many Pinewood Derby® cars as they wish in any class. There is no age limits on the cars.
  • All live participants have the option to stage their own cars but the cars will be placed on the track for staging by the prestagers.
  • NO WHEEL CLEANING!
  • All cars must be gravity powered.
  • No work may be done to cars once they have passed inspection. All cars must go from the inspection area straight to the staging area.
  • If a car jumps the track it will be disqualified from the event. The heat will not be rerun unless the infracting car makes contact with any of the other cars in the race or if it found to be an issue with the track.
  • In the unlikely case of a car getting damaged, reasonable repair can be made to the car as long as it is ready to race again by its next heat.

General event rules and considerations

  • Please use caution around the facility. No running or climbing over the track allowed. Stay behind any taped off areas.
  • Do not pick up or touch anyone else’s cars without permission from the owner.
  • Anyone and everyone is welcome to come but due to limited space please leave small children home if possible. PLEASE BE RESPONSIBLE FOR YOUR CHILDREN IF YOU BRING THEM! Please keep them from the car staging areas to avoid any unfortunate accidents.
  • All cars must pass inspection before they can race. All decisions by the inspection team are final so please refrain from arguing or causing a scene if you disagree with an inspection decision.
  • This is a family event and even though it will be very competitive please conduct yourself in a proper manner refraining from vulgar language and inappropriate behavior. By all means cheer and have fun! This is a race! Please avoid the embarrassment of being asked to leave the event.
  • Do not try and cheat! If a builder is caught cheating during the event, his or her cars will be removed from the competition with NO REFUND.

The following Modifications are not allowed for any class

a. Starting or finish line devices
b. Glass or extremely fragile parts
c. Paint that is wet, smudges or extremely sticky
d. Sharp objects, sandpaper or abrasives on the bottom of car (We do not want any damage to the rubber stopping pads)
e. Axles and/or wheels attached to any device that mechanically or alters rotation and spin
f. Any part of the car to go beyond the starting peg
g. Propellants

BASX Class

Car Body ( the wooden/material structure that holds the weight, axles and other add ons)/ Total Car Dimensions

Wheel Base : Any as long as wheels do not exceed the 7″ total length requirement
Total Car Height : Not to exceed 3″ inches…
Total Car Length : Not to exceed 7″ inches…
Total Car BODY Width : Not to exceed 1-3/4″ inches…
Total Car Weight : Not to exceed 5.0 ounces (+.04) or 143 grams even measured on 1/10th digital scale

Additional materials maybe added as long as they meet the rules

4 Axles & Wheels must be installed to the side of the car body directly across from one another / No more than a 10 degree angle

NO FENDERS, AERODYNAMIC MODIFICATIONS, WEIGHTS OR DECORATIONS ALLOWED MOUNTED IN ANY FASHION TO SEAT IN FRONT OF OR BEHIND THE WHEELS OR ANYWHERE ON THE SIDE BETWEEN THE FRONT AND REAR WHEEL OR INSIDE THE WHEEL CAVITY.

Track Center Rail Height : 1/4″ inch ( 7mm ) *
Track Center Rail Width : 1 5/8″ inches (4.2 cm) *

* Wheels must clear the outside to outside center rail width measurement

Axles

a. Minimum diameter .084
b. Axles must have a nail head

Wheels (No bearings)

BSA (Post 2009 mold only!)

a. May be CnCed, lathed, polished and/or sanded to true the edge of tread, surface and circumference
b. The tread / contact surface must remain flat and parallel to the bore as humanly possible
c. No Angling, Reshaping, Canting, Round Crowning, Tapering, H-ing, V-ing, Dishing, the outside of the wheels and/or tread surface
d. All writing must remain visible on the inside and outside of the wheel.
e. NO Wheel covers may be used
f. 7.5mm Minimum Tread Width
g. Wheels must weigh at least 2.4 grams and a wheel can be removed after the race to be weighed to confirm weight.
h. The wheels can be trued to get to the 2.4 gram weight but they are not to be cut down intentionally under the weight limit and use foreign material to bring it back to weight.

MA Xtreme Class

Car Body ( the wooden/material structure that holds the weight, axles and other add ons)/ Total Car Dimensions

Wheel Base : Any as long as wheels do not exceed the 7″ total length requirement
Total Car Height : Not to exceed 3″ inches…
Total Car Length : Not to exceed 7″ inches…
Total Car Width : Not to exceed 2-3/4″ inches…
Total Car Weight : Not to exceed 5.0 ounces (+.04) or 143 grams even measured on 1/10th digital scale

Additional materials maybe added as long as they meet the rules

4 Axles & Wheels must be installed to the side of the car body directly across from one another / No more than a 45 degree angle. Rear wheels cannot be reversed.

Track Center Rail Height : 1/4″ inch ( 7mm ) *
Track Center Rail Width : 1 5/8″ inches (4.2 cm) *

* Wheels must clear the outside to outside center rail width measurement

Axles

a. Minimum diameter .084
b. Axles must have a nail head

Wheels (No bearings)

BSA, Maximum Velocity, Awana, Pinecar

a. May be CnCed, lathed, polished and/or sanded to true the edge of tread, surface and circumference
b. The tread / contact surface must remain flat and parallel to the bore as humanly possible
c. No Angling, Reshaping, Canting, Round Crowning, Tapering, H-ing, V-ing, Dishing, the outside of the wheels and/or tread surface
d. Lettering must remain visible on the inside and outside of the wheel. In the case of a wheel that has no lettering on the outside the original shape must remain.  A wheel cannot be machined flat on the outside sidewall.
e. Wheel covers may be used only if entire wheel is visible
f. 7.50mm Minimum Tread Width
g. Wheels have no weight restriction as long as they meet the above requirements.

UNLIMITED Class

Car Body ( the wooden/material structure that holds the weight, axles and other add ons)/ Total Car Dimensions

Wheel Base : Any as long as wheels do not exceed the 7″ total length requirement
Total Car Height : Not to exceed 3″ inches…
Total Car Length : Not to exceed 7″ inches…
Total Car Width : Not to exceed 2-3/4″ inches…
Total Car Weight : Not to exceed 5.0 ounces (+.04) or 143 grams even measured on 1/10th digital scale

Track Center Rail Height : 1/4″ inch ( 7mm ) *

Track Center Rail Width : 1 5/8″ inches (4.2 cm) *

* Wheels must clear the outside to outside center rail width measurement

Axles

Open

Wheels

Open

a. No greater than 31mm wheel diameter

(Wheels will be checked with digital calipers if needed)