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Brown Cafe UPS Forum
Life After Brown
Pinewood Derby Racing
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<blockquote data-quote="soberups" data-source="post: 664588" data-attributes="member: 14668"><p>Use liquid graphite on the axles.</p><p> </p><p>Cut the body of the car into an aerodynamic "wedge" shape with as little air resistance as possible. Drill holes lengthwise through the body of the car to improve airflow. Sand and paint to make it as smooth as possible.</p><p> </p><p>Drill a few small horizontal holes in the sides of the car, as low as possible, and fill them with lead fishing weights to lower the center of gravity and compensate for the weight of the wood that you have removed. Use a postal scale to get the weight up to the required limit.</p><p> </p><p>If you have access to a drill press, predrill the holes that the axle-nails go into and make sure they are <em>perfectly</em> horizontal and aligned with one another. Crooked axles will cause drag, pull the car to one side, and slow it down. Getting the wheels installed properly and running true is the #1 priority.</p><p> </p><p>Have fun!</p></blockquote><p></p>
[QUOTE="soberups, post: 664588, member: 14668"] Use liquid graphite on the axles. Cut the body of the car into an aerodynamic "wedge" shape with as little air resistance as possible. Drill holes lengthwise through the body of the car to improve airflow. Sand and paint to make it as smooth as possible. Drill a few small horizontal holes in the sides of the car, as low as possible, and fill them with lead fishing weights to lower the center of gravity and compensate for the weight of the wood that you have removed. Use a postal scale to get the weight up to the required limit. If you have access to a drill press, predrill the holes that the axle-nails go into and make sure they are [I]perfectly[/I] horizontal and aligned with one another. Crooked axles will cause drag, pull the car to one side, and slow it down. Getting the wheels installed properly and running true is the #1 priority. Have fun! [/QUOTE]
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