Pack 99 Pinewood Derby Design Rules:
Each entry shall be constructed from an up-to-date B.S.A. Pinewood Derby Car Kit for the current year. A new car must be built for each year. All nine pieces must be used. The car must be free rolling. No starting devices are allowed.
Overall dimensions (length
& width) - The car must not be greater than 2 & 3/4 inches
wide (including wheels) by 7 inches long (including accessories). The
original Pinewood Derby wood body of the car must touch the starting
gate. No part of the car can extend in front of the starting gate.
Wheel Base -
The Distance (width) between the wheels (front or rear) must not be
less than 1 & 3/4 inches (measured from innermost part of the
wheels). The distance between the track and any part of the underside of
the car must not be less than 3/8 of an inch. Wheels cannot extend in
front or rear of the body of the car. All cars must have 4 wheels (no
more, no less) and are required to have 2 wheels on each side opposing
each other.
Visual Inspection of the Wheels -
Wheels and axles MUST be the ones furnished in the car kit. Solid axles
are not permitted. Replacement wheels and axles must be from an
official BSA kit. Axles may be polished and lubricated (dry lubricant
only). Wheels may be sanded to provide a true round circle but must
retain the original width and flat rolling surface. No purposely-rounded
wheels allowed. No "H" or "A" wheels. No attachments or adhesives will
be allowed on the surfaces of a wheel. Wheels will be placed on a flat
surface to verify that the entire width of at least three wheels make
simultaneous contact with the flat surface while stationary and in
travel (no angling or canting of the wheels). Regardless of what they
could be made out of, spacer bearings, washers, bushings or springs are
prohibited, whether fixed or movable. If axles are inserted in the
original slots of the wood body, the nail points must be visible from
the bottom of the car. If the axles are inserted in holes in the side
of the car, holes must be drilled in the bottom of the car so the points
of axles (nails) can be seen.
Total Weight - Entry will not exceed 5.0 ounces or 141.745 grams. Weight must be securely fixed to the car and non-movable.
