Pinewood Derby Rules (2015-2016)

  2. Maximum overall width (including wheels and axles) shall not exceed 2 ¾ inches.
  3. Minimum width between wheels shall be 1 ¾ inches so the car will fit over the center guide strip.
  4. Minimum clearance between the bottom of the car and track shall be 3/8 inches so the car will clear the center guide strip.
  5. Maximum length shall not exceed 7 inches.
  6. The car must fit underneath the timer.
  7. The wheelbase (distance between the front and rear axles) may not be changed or altered — precut slot in block must be used as the axle base (precut slots may be squared if needed).

Given that the blocks are mass-produced and there is some natural variability in the wood, the following measurements

account for that variability.

  1. The maximum allowable distance from the front of the car to rear axle is 6 1/16 inches.
  2. The standard allowable measurement from slot to slot is 4 3/8 ± 1/8 inches
  3. No part of the car can protrude in front of the starting peg. The nose of the car should not come to a point and should be at least approximately ½” wide to rest on the starting peg and to trip the finish timer.


  2. Weight shall not exceed 5.00 ounces (141.75 grams). The readings of the official race scale will be considered final. The car may be hollowed out and built up to the maximum weight by the addition of wood or metal only, provided it is built into the body and/or firmly affixed to it. Weights cannot be taped to the car. No loose or moving materials of any kind, including mercury, are permitted in or on the car.
  3. Details such as steering wheel, driver, spoiler, decals, painting, interior details, etc., are permissible as long as these details do not cause the car to exceed the maximum length, width, and weight specifications.
  4. Cars with wet paint will not be accepted.


  2. Only official Scout Grand Prix wheels and axles can be used. Axles may be polished, but may not be grooved. Axle diameter may not be decreased.
  3. Wheels may be lightly sanded to remove mold imperfections and flashings. This light sanding is the only wheel modification allowed. NO material may be removed from the wheel, this includes removal of the step from either end of the wheel bore, or outer hub face, or removing material from the wall of the wheel for “balancing”. Beveling, tapering, sanding, wafering, rounding, lathe truing, reducing diameter, narrowing, thinning, etc., is prohibited.

For clarification:

  1. Wheel diameter may not be reduced below 1.170 inches
  2. Wheel width may not be reduced beyond 0.360 inches
  3. Wheel bearings, washers or bushings are prohibited.
  4. The car shall not ride on any type of springs.
  5. The car must be free-wheeling with no starting device or other propulsion.
  6. Distance between front and rear axles must be maintained at 4 ½ inch spacing (See 1.f.ii).
  7. The car must have four wheels, free spinning on axles, in the normal vertical position, with axles installed in the precut slots, but it is not required that all four wheels contact the track.
  8. The axles, including the tip, must be visible to the inspector. Any glue or epoxy in the slot must be transparent.


  2. Only dry lubricants, such as powdered graphite, may be used. Krytox, XOil, Nyoil, and similar liquid lubricants are NOT allowed. Car must have visible evidence of dry lubricant application. Regular oils or silicone sprays may soften the plastic wheel or damage the track and are prohibited.
  3. Powdered graphite will be permitted only in the Pit Stop Area inside the derby location.
  4. Cars may be lubricated in the Pit Stop Area before inspection. No further lubrication will be permitted.


Adult/Open Races

Rules are the same as the Scout Class, with the following exceptions:

  1. You may have less than 4 wheels (and less than 4 touching) and they can be modified
  2. Width between the axles may be modified
  3. Axles do not have to be BSA certified however the Overall dimensions must not exceed the specifications for the kit:
  4. Weight shall not exceed 1 pound (16 ounces)
  5. No spikes are allowed


Adult/Open race cost per entry this year is $5 for the first car and $1 for each additional car

Scouting for Food–can pickup (November 21st)

This Saturday is the Scouting for Food can pickup! We will meet at Fairmount at 9am and will collect cans at Park Charles. If you have an SUV or truck, I encourage you to drive that over so it makes it easy to put in the cans. Hope to see everyone there!

Scouting for Food–dropoff (November 14th)

Hello, everyone! This Saturday is Scouting for Food! This weekend is the dropoff weekend, which means Scouts will be tying the plastic bags to the doors. Start time is at 9am at Fairmount. See you there!

Pack 30 Hike–October 24

We will be having a Pack 30 hike at Busch Research Trail, Highway 94 and D. It will be at 1pm, and meet at the cemetery. If you have any questions, feel free to ask Jeremy Patterson. See you there!

Pack 30 Campout this weekend!!!

This coming weekend (September 18-20) is the Pack 30 Campout! It will be held at Indian Camp Creek Park. An email from the Cubmaster was sent out to the entire pack on the weekend. Talk to your Den Leader for more information. See you there!

Pack 30 Hike: September 6

We are having a Pack 30 hike at Rabbit Run Park at 4:45pm today! Meet at the pavilion as you enter the park (on the left). It will be warm, but it’ll definitely be dry. Come on out!

Pack 30 Hike: September 12

The next Pack 30 hike is on September 12 at Legacy Park (5490 Fifth St, St. Charles, MO) at 3pm. Meet at the cabin, and we hope to see you there!

Pack 30 Meeting: August 25th

Hello, everyone! This week’s Pack 30 meeting will be on Tuesday, August 25th at Fairmount Elementary. New Scout parents: please come at 6:30pm. The rest of the Scout parents please come at 7pm. See you there!

Pack 30 Hike: August 22nd

The first Pack 30 hike for 2015-2016 will be this Saturday, August 22nd at Rabbit Run Park (10 Mayfield Dr, St. Peters, MO) at 3pm. Please meet at the pavilion, and see you there!

Pack 30 Campout: May 15-17!

This coming weekend is the Pack 30 Campout (May 15-17), which will be at Pere Marquette State Park. If you haven’t done so, please sign up through Google Docs or let your Den Leaders know if your son will attend.