For maximum effect, front load the lead shot. An Ideal design would have
10% of the weight on the rear axle and 90% on the front axle.
>----------
>From: Brian Evans[SMTP:brian@uunet.ca]
>Reply To: Brian Evans
>Sent: Friday, September 19, 1997 6:26 AM
>To: Joel A. Charbonnet Jr.
>Cc: vintage-race@Autox.Team.Net
>Subject: Re: Science Project
>
>Get a block of balsa woodfrom the hobby store, some polyurethane from the
>plastic store, some lead shot from the fishing store ( or other weighty
>stuff) and some 1/16" music wire, also from hobby store.
>
>Carve your car body from the balsa wood - 1950's F-1 would be about right
>(and Vintage!). Add the weight as ballast - use the lead shot to get it as
>heavy as possible, to have increased mass to help overcome friction. Use
>the music wire as axles, and work to get a little spring, to help the car
>ride easy over bumps.
>
>Turn the wheels out of the polyurethane. This is where you can gain a bit.
>Assuming the track is hard, put a knife edge on the tread, to minimize
>friction. The poly is self lubricating, but drill a lube hole so that you
>can spray WD-40 or moly spray lube into the bearing surface before a run.
>
>Having written this, it sounds like a lot of fun!
>
>Brian
>
>
>At 01:11 AM 19/09/97 -0400, you wrote:
>>My son has to build a car that weighs under 2 pounds and will travel
>>at least 2 feet off an 8 inch high ramp. It must be built from
>>scratch, NOT from a car kit. Does anyone have any suggestions,
>>plans, where to look or where to begin?
>>
>
>
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