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Creating a High-Performance Gravity-Powered Racer

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In "Speed Demons" by Tommy Davis, our goal was to design a gravity-powered racer that could travel a minimum distance of 3 meters. The final gravity cruiser achieved an impressive 6 meters! Key design features included two large rear wheels, two smaller front wheels, and a symmetrical structure fortified with clever weight distribution. We faced troubleshooting challenges like a misaligned fulcrum and equipment failures, but through modifications and support enhancements, we ultimately met our distance goals, showcasing the importance of engineering resilience.

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Creating a High-Performance Gravity-Powered Racer

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  1. Speed Demons By: Tommy Davis

  2. Our goal • Our goal is to have a gravity powered racer to go at a very minimum of 3 meters • The gravity cruiser eventually went six meters

  3. Design Features • Two large wheels at the back. • Two small wheels at the front. • Completely symmetrical • Fulcrum put at ¾ up the support • Fulcrum support beam at 1/3 of the back of the beam

  4. Helping to meet the goals • We used extra weight to make sure that it would pull the string as fast as it can. • The weight made it front-heavy so we put two symmetrical penny containers on the back. • Three containers of pennies as the weight on the fulcrum. • Support beams made out of leftover materials

  5. Troubleshooting • We had our beam to far front in the beginning and there was not enough string to pull the axle/spin the wheel. • The tower was leaning forward and making it fall so support triangles were added to the front and sides • Our cruisers fulcrum snapped so we wrapped it all in tape, which provided sort of a brace so that it wouldn’t bend. • The weights in the back of the cruiser made the back wheels have friction

  6. Meeting Our Goals • In the end the modifications allowed it to go 6 meters. However at the last minute the bracing failed halfway and we had to entirely replace the fulcrum and did not have time to fine tune it to its original 6 meter distance

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