PACK 86DOWNERS GROVE

Pack 86 Pinewood Derby

Rules and regulations

The Derby is designed to be fair, competitive, and fun. Review the official rules before cutting or modifying the car.

Start with the official rules

Current-year instructions and race officials’ decisions always take priority over this practical summary.

Open the Pack 86 rule document

Questions can be posted in BAND for the Committee Chair, Cubmaster, or Pinewood Derby coordinator.

Maximum length7 inches
Maximum width2¾ inches
Maximum weight5.0 ounces
Track clearance⅜ inch
Inside wheel spacingAt least 1¾ inches
WheelbaseUse the kit’s original axle slots

Build rules

  • Use the official kit’s wood block, axles, and wheels.
  • Pre-made bodies are not allowed.
  • Wheels may only be lightly sanded to remove molding imperfections.
  • Axles may be polished but otherwise not altered.
  • No bearings, washers, bushings, springs, propulsion, or starting devices.
  • The car must be free-wheeling.

Weight and appearance

  • Total weight may not exceed 5.0 ounces.
  • Weight must be securely built into or attached to the car.
  • No loose materials are allowed inside the body.
  • Details are welcome when they fit the limits and are securely attached.
  • Cars may not be shaped to hold the starting pin.

Inspection

  • Every car must pass technical inspection before racing.
  • A car that misses a rule may be adjusted and presented again before the deadline.
  • No alterations are allowed after registration.
  • Damage may be repaired if it does not delay racing.

A practical build trail

1

Sketch

Trace the block, draw top and side views, and let your Scout lead.

2

Shape

Keep a flat front for the starting pin and leave room for secure weight.

3

Align

Install axles square, roll-test on a level floor, and tune straight tracking.

4

Tune

Polish permitted axle surfaces and use dry graphite lubricant only.

5

Inspect

Measure length, width, clearance, and weight before official check-in.

One current-year car per Scout.

Official current-year rules govern the event.