PACK 28 PINEWOOD
DERBY!
Date: Sun. 3/12
Location: Lucas Valley Comm. Center on Mt. Shasta and Idylberry
Time:
PRIZE CATEGORIES
Speed: 3 fastest in den, 3 fastest in pack; Design: Most Spirited,
Most Original, Best Design, Best Looking.
All cars may be entered into the Marin County Fair Pinewood Derby display
contest. Top car from each den will compete in the Marin County Fair
county-wide Pinewood Race in June/July.
Pack 28 is proud of their scout-built cars! Please note that this is a father-SON event,
not a father-event nor an uncle-who-works-for-ILM-event. J The cubscout
must design and help make the car. The boys will be too small for drills and will need Dad's help,
but adults must not design nor do the bulk of the manufacturing of the
cars. Sibs and parents may
purchase their own kits at the Marin Council store but they must
identify their cars and their cars will be raced separately from the
pack cars.
Internet-kit designed cars and any car body or wheels/axles
made with anything other than what comes in the Official Cub Scout Pinewood
Derby kit will be disqualified. No lubricants other than graphite! Be sure the cars meet the Official
Cub Scout rules (read below and in kit box) so that the winners can
go on to qualify for the county finals.
Let's get ready to roll!
OFFICIAL
GRAND PRIX PINEWOOD DERBY KIT
Please read these Rules and Instructions before building
your car.
The
Pinewood Derby is open to all Cub Scouts including Tiger Cubs &
Webelos Scouts. Cars should be built by the Cub Scouts with some adult
guidance. Any technical assistance should be fully explained to the
Cub Scout so that he can use that knowledge on future projects.
CAR SPECIFICATIONS:
- Width: - 2-3/4" - Length - 7" - Weight - Not over 5 Ounces
- Width between wheels - 1-3/4"
- Bottom clearance between can and track - 3/8"
RULES
Wheel bearings, washers, and bushings are prohibited. The car shall
not ride on springs. Only official Cub Scout Grand Prix Pinewood
Derby wheels and axles are permitted. Only
dry lubricant is permitted. Details, such as steering wheel and
driver are permissible as long as these details do not exceed the maximum
length, width and weight specifications. The car must be free-wheeling,
with no starting devices. Each car must pass inspection by the official
inspection committee before it may compete. If, at registration., a
car does not pass inspection, the owner will be informed of the reason
for failure, and will be given time within the official weigh-in time
period to make the adjustment. After final approval, cars will not be
re-inspected unless the car is damaged in handling or in a race.
BUILDING INSTRUCTIONS
Check the grooves to ensure that each is at a perfect 90-dearee angle to
the car body. A car with untrue axles tends to steer to one side or
the other, causing it to rub up against the side of the lane strip,
slowing it down. You can check the groove angles by using a square,
a protractor, or even a piece of paper.
Lay
square on block to check for squareness and alignment of slot.
Use
two hacksaw blades side by side to redress the slots. Use the edge of
the square as a guide.
NOTE: If the car design you chose has a narrow body, make
sure the area where the axles are inserted into the body remains 1-3/4"
wide, or wheels will not fit over the guide strips of the track.
PAINTING AND WHEEL ASSEMBLY Apply several coats of sanding sealer; then sand entire
car with a fine-grade sandpaper. Give model at least two coats of fast
drying paint, in your choice of color. When paint is completely dry
sand with a fine sandpaper, apply a final coat of paint and allow to
dry thoroughly. TO FINISH, rub entire car with a rubbing compound. Details
such as windshield, driver, racing numbers, etc., should be added now.
For a super finish apply a coat of auto wax and rub to a high gloss.
Pre-lubricate axles and wheels using, dry powdered lubricant. Do not
use regular oil or silicone spray, since it may soften the plastic.
Slide wheels over axles, then gently tap them into the car body grooves
with a 1/4" dowel or similar object to within 1/32" of car
body. (See Figure 4). Make sure wheels turn freely.
