Pinewood derby

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Pinewood Derby cars are made from kits containing a wood block, plastic wheels and metal nails for axles. The completed cars race down a multi-lane track powered by gravity.

Contents

Cars [edit]

heres a hint use graphite

Parts [edit]

Blocks [edit]

  • Official Pinewood Derby car kit.

  • Wedge body with holes drilled for weights.

  • Precut, drilled and weighted Pinewood Derby car block

  • Lead (left) and tungsten (right) weights for Pinewood Derby cars

Axles [edit]

  • Stock Pinewood Derby car axle.

  • Closeup of stock Pinewood Derby car axle showing stamp marks (left) and nail head burr (lower right).

  • A notched and polished Pinewood Derby axle.

  • A Pinewood Derby axle notched and coated with graphite.

  • Grooved and graphite coated axle.

  • Nickel-plated pinewood derby car "speed" axle

  • Alignment of a pinewood derby car axle.

Wheels [edit]

  • A lathed Pinewood Derby wheel from mold #4.

  • Closeup of Pinewood Derby wheel from mold #4.

  • Pinewood Derby car coned wheel hub (right)

  • Blemish from sprue gate trim (mold mark) on a stock Pinewood Derby car wheel

  • Front view of lathed wheel

  • Side view of lathed wheel

  • Outer tread area of a lathed wheel

  • Stock Pinewood Derby wheels (left) and modified (one gram) wheels (right); front (top) and rear (bottom) views (note the mold #7 indicated at the 3 o'clock position on the lower left wheel).

  • Closeup of Pinewood Derby car wheel (rear view) for a one gram aftermarket wheel (upper) and stock 3.6 gram wheel (lower).

  • Pinewood derby car "outlaw" wheels - thin Delrin machined wheels

Lubricants [edit]

  • Graphite powder with molybdenum disulfide lubricant.

  • Graphite powder lubricant.

  • Nyoil II synthetic hydrocarbon lubricant.

  • Spray on graphite paint

  • Stick-on graphite axle bushing

Tools [edit]

  • Axle insertion tool.

  • Pinewood Derby car axle hole drilling tool.

  • Wheel bore polishing tool

  • Hub tool

  • hub tool closeup

  • Wheel shaving tool

  • Wheel shaving tool closeup

  • Wheel balancing tool

  • A drill press is useful for drilling holes for axle and weight insertion holes.

  • A bench vise is useful for holding the car block.

  • Another view of a bench vise

  • Let dad use the belt sander.

  • Let Dad run the band saw.

  • A scroll saw can be used to cut the block.

  • Calipers are handy if you have them around.

  • A CNC lathe is used for professional wheel and axle treatments.

Diagrams [edit]

  • Dimensions of a stock BSA wheel

  • Dimensions of a stock Pinewood Derby axle.

  • Diagram of Pinewood Derby car block with standard BSA wheelbase.

  • Pinewood Derby car design template for standard wheelbase (100 dpi)

  • Diagram of Pinewood Derby car block with extended wheelbase.

  • Pinewood Derby car design template for extended wheelbase (100 dpi)

  • Measuring the coefficient of friction on a flat surface.

  • Measuring the coefficient of friction on an inclined surface.

  • Orthographic projection of a Pinewood Derby car block

Alignment [edit]

  • Wax paper wheel shim

  • PWD Shimmed axle.jpg
  • PWD wheel axle closeup.jpg
  • Wheel IN IN.gif
  • Wheel OUT OUT.gif
  • Wheel IN OUT R.gif
  • Wheel IN OUT F.gif
  • Wheel OUT IN F.gif
  • Wheel OUT IN R.gif
  • PWD Shimming.gif

Track [edit]

  • Track Pinewood Derby.jpg
  • Pinewood derby cars 02A.jpg
  • Pinewood derby 04A.jpg
  • Pinewood derby 08.jpg
  • Pinewood derby 09A.jpg
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