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About Pat March
Expertise
Gears, levers, geometry, design, fans, blowers, centrifugal pumps, plastics, manufacturing.

Experience

Past/Present clients
Ballards', RTP Electrix, Spectra-Physics, Young Concepts, Hiline, others.

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Mechanical Engineering - science project in engineering

Expert: Pat March - 4/25/2007

Question
My son has to do a project involving launching ping pong balls through some sort of cylinder for a distance of six feet into a raised container. Can you help us????
Thanks,
Lb Howe

Answer
I think air pressure would be a good way to do this. Shop for mailing tubes that will closely fit the balls. Make a wooden stopper for one end of the tube. Fit a short metal tube through the stopper. Brass tubes in various sizes are available at hobby shops. Connect a rubber tube to the brass tube and a tire pump to the rubber tube. I suspect the tire pump may not adequately power the ball, so you may need to use an air tank instead. A used butane torch tank should work. Fill it to 100psi or so at a gas station.

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