Derby Talk

My son's rocket raced last night and we relied heavily on this forum. I thought I'd "give back" by reporting what we learned (in a very long post.) Much of what we learned is already stated elsewhere in this forum, but I'd like to repeat some of the best stuff. His rocket overwhelmingly wo...

In our space derby last night, I ended up being the "winder" because I brought a powerdrill. I noticed that that torque supplied by the rubber bands that were soaked in the glycerin/green soap solution didn't deliver nearly as much torque once they were wound. I could feel the difference a...