SCOUT PACK 21
CUB SCOUT GRAND PRIX
SCOUTS OF AMERICA
Cub Scout Pack 21 - Pinewood Derby
Official Weigh-In and Inspection
Derby Race Rules
Cub Scout Pack 21 – Grand Prix Committee - 2004
Inspection Rules for Official Grand Prix Pinewood Derby Kit
READ BEFORE STARTING YOUR PINE WOOD DERBY PROJECT
The Pinewood Derby is one of the most popular and
successful special events in Cub Scouting. Like all successful activities,
it requires planning and preparation, but its value in fun and in
strengthening family relationships has been proven over the years.
Pinewood Derby cars are simply small model cars of
specified dimensions, created, carved, and assembled by the boys, under
guidance of their parents or other family members. The cars are gravity
powered and run down a regulation track. The race can be run indoors or
A. THE WHEEL
AXLE (plated nail)
of Pinewood Derby model car kit MUST BE USED.
desired, any burr or seam on any surface of axles may be lightly
skimmed off with a fine abrasive.
of axle must be maintained.
not build up axles with any material and then turn down with lathe.
not add bearings, washers, bushings, tubes or spacers to axles.
with a powdered lubricant. No
oil or liquid spray is permitted. Oil may soften the
drilled hole may be used in place of groove.
change of wheel base centers is acceptable.
of Pinewood Derby-model car kits MUST BE USED.
desired, the burr and seam on contact surface of wheels may be lightly
skimmed off with any tool or material available.
burr and scam are removed from contact surface of wheels, then the
surface must be flat and square to side of wheels. In either case,
width and thickness of contact surface to be maintained.
holes can be drilled through wheels to remove material and no material
can be removed from inside of wheels, except burrs.
weight can be added to wheels.
are designed to be and will be wobbly on axles.
are not permitted.
wheels may not be rounded or have a "V" shaped surface.
Because of variance in scales used in
different Cub Pack Pinewood Derbies, a tolerance of plus one gram will be
acceptable. For the District Derby, the reading of the scales used
at registration will be deemed accurate. Make sure that weight is
firmly attached to the car. Note, 5 oz. = 0.31 lb. = 141.75 grams.
of car must fit within gage at registration. No modifications of
any kind are permitted after registration.
accessories are acceptable if they are secure and stay within maximum
dimensions of car.
designs, show wheels and axles are not allowed. Other accessories are
acceptable. Refer to the Cub Scout Grand Prix, Pinewood Derby
Guidebook* as a guide in building your Pinewood Derby car.
Note: many tips are not allowed by the above rules ... all tips
can be used in modified (non official district) competition though.
forget to check groove square ness to end of block for proper
alignment. Also check length of block for regulation length, and
minimum width of chassis.
forget to maintain clearance of 3/8" from bottom of car to track
have the right to disqualify a car at anytime, if it has violated
year a new car is to be built to enter.
the car jumps lanes, will run the heat over the first time only,
unless contact was made with another car.
other rules and specifications are found in your Pinewood Derby car
The above rules must be adhered to in order to make the
Derby fair and competitive for a mixed age group of boys who are limited
in the use of power tools and have varied assistance from parents.
luck and happy racing….