PINEWOOD DERBY at the FAIR

Event Information

Pinewood cars are small race car models that are built to specific dimensions and raced by gravity down an inclined track.

Team: Individual Event

Rules:
Each car is inspected at Weigh-in for the following inspection points:
  • Once passed inspection, the car goes to the staging area, and can only be accessed by track officials, until all races are concluded.
Derby Car Dimensions:
  • The overall Length of the car shall not exceed 7 inches.
  • The overall width of the car shall not exceed 2-3/4 inches.
  • The car must have 1-3/4-inch clearance between wheels.
  • The car must have 3/8-inch clearance underneath the body so it does not rub on the track. 
Derby Car Weight
  • The car weight shall not exceed 5.0 ounces (141.75 grams).
  • The Official Race Scale that is used at the check-in shall be considered final.​
Wood, Wheels, and Axles:
  • The block of wood may be shaped in any way desired.
  • No narrowing or rounding of the wheels will be allowed.  You may remove the seams and imperfections from the wheels.
  • The axles may be altered, polished, and lubricated. Allowable lubricants are Graphite and Teflon.
  • All 4 wheels must sit flat on the track.
  • Wheelbase cannot exceed 5-3/4 inches max, and no less than 4 inches.
  • Front and rear wheels must be positioned directly across from each other.
Front of Car:
  • Height: The bottom center of the front end must be no higher than 1” above the track, so that it shall rest against the short starting pin.
  • Width: The front end must be at least ½ inch wide in the middle of the car, so that when the car is placed in the starting position, it shall be centered on the starting pin.
  • NO PART OF THE CAR BODY, WHEELS OR ATTACHMENTS MAY PROTRUDE IN FRONT OF THE STARTING PIN.
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Car Modifications NOT Allowed:
  • Wheel bearings, washers, or bushings are prohibited.
  • The car must not ride on any type of springs.
  • No starting devices. The car must be freewheeling.
  • No loose material of any kind, (such as lead shot), may be used.
  • No Grooves are allowed in axles.
  • Over lubrication causing shedding onto the track is not allowed.
Hints:
  • Weight is Good
    • A heavier car will go faster than a lighter car. (i.e. a 5.0 oz car will generally go faster than a 3.0 oz car)
    • Weight can be added anywhere on the car as long as it does not affect the required length, width, or underbody clearance., and the car is 5.0 oz. or less.
  • Friction is bad:
    • Application of graphite to the wheels and axles will reduce friction and make the car go faster.
    • Wheels should turn freely and not rub against the car.
Entries should be registered by May 15.
​ (pre-register below.)

Pre-Registration fee - $4.00/car if pre-registered by May 15. Payment is due at weigh-in on Fair Day.

After May 15 & Race Day Registration - $2.00 increase in fee (totaling $6.00) if car is NOT pre-registered by May 15.

    Pine Car Derby Registration

Event Tip

Picture
Car kits are inexpensive and fun to build. Beginners may want to start with pre-cut models. 
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Kits & supplies can be found at
Hobby Lobby and Joann Fabric & crafts.