Quote:
Originally Posted by hongher2005
Im in the 7th grade doing an engineering fair project! Im making a rubber band powered car.. I have sort of an idea of how I want to make it. I think I'm going to make it out of legos for less weight then put 2 straws for the wheels to spin to reduce friction. Then large wheels with a lot of grip for max acceleration.. But the thing I can't get is how to get 1 rubber band to turn it all and move it.. please help! Thanks! if you want more info, the accual rules and regulations are at --- http://www.ospe.org/associations/750...le%20Rules.pdf --- |
How about using a ducted fan, rather than driving the wheels?
Ducted fan - Wikipedia, the free encyclopedia
If you make the ducting removeable, you can run the car with and without to show what effect the ducting has.
