
Video 2 in the Pinewood Derby Speed series let you in on the the best-kept speed secrets that make some wheels faster than others. See how physics affects how fast your wheels accelerate. See how buying more than one pinewood…
Adam from raisinggeeks.com (a great site to check out) designed and built a completely awesome photo finish instant reply as part of his inventing merit badge. A big thanks to Adam and his dad for putting this on YouTube and…
Here is a fun project that can put your son’s power drill to work. It does require an adult to rip the scissors legs to width, and to saw the pieces to length. With the pieces sawn to length ahead…
This may be bending the rules a little, but what a great project. This car was printed with a 3D printer and automatically fires two C02 cartridges when the starting gate goes down. See their website for the build details…http://www.thingiverse.com/thing:5929