![]() Four wheels will work too, but the accuracy of your construction is much more critical than it is with three wheels. Using three wheels rather than four makes it substantially easier to create a car that both tracks straight and doesn't waste a load of energy to off-center thrust. ![]() Because it is soft, it probably behooves you to use some sort of insert to spread the load where axles penetrate in order to avoid distorting the wood.ĬD/DVDs make good wheels. As it is relatively soft, it is easy to shape with a knife, and regular twist type drill bits work well for making holes for axles. To reduce mass, concentrate on using light materials such as balsa for the car's chassis. In my experience, converting the potential energy into kinetic energy as quickly as possible (while avoiding wheelspin) results in the greatest distance travelled. The two biggest things standing in your way are mass and friction. You should be able to make a car that travels 20 meters or more. I've never made a car powered by rubber bands, but I have made a few powered by mousetraps. r/DIY now has a Discord channel! Come chat with us!ĭid you miss the AMA with Patrick DiJusto? Click here to read it!Īll content must be DIY - if you paid for the work or found it posted online it is not DIY. AMA with Travis Larson is over Check it out!.COVID-19 DIY PPE Post is live, connecting medical professionals with DIYers!.Quinn Dunki of Blondihacks answers your questions! Read her insights into machining and cat dentistry here.
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