Build a soap box car
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Transportation Engineering

Takes Days

Hard

Soap Box Cars are homemade vehicles that use only gravity to move – no engine. Make a Soap Box Car with plywood and wagon wheels, or get ambitious – with fiberglass frames and ball bearing hubs. A steering system and good breaks are also important features.

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Table of Contents

Transportation Engineering

Step 1

Soap Box Cars are homemade vehicles that use only gravity to move – no engine. Make a Soap Box Car with plywood and wagon wheels, or get ambitious – with fiberglass frames and ball bearing hubs. A steering system and good breaks are also important features.

Final steps

You're almost there! Complete all the steps, bring your creation to life, post it, and conquer the challenge!

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Build a soap box car