The space derby is a racing event for Cub Scouts that is similar to the Pinewood Derby except Cub Scouts race miniature rockets that are propelled by a rubber band and propeller.
The space derby kit consists of a balsa wood block, propeller assembly, rubber bands, plastic sheet (for fins), and a mounting bracket. The wood block comes out of the box with a drilled out center hole. The block is carved into the desired shape, sanded and painted. The mounting bracket and fins can be added either before or after painting. The rubber band is inserted through the center hole with one end on the propeller and the other held in a cross-piece at the rear.
The completed rockets are wound up (by hand or automatic winder) on the propeller and suspended on a string from a separate bracket with the propeller held in place. Two, three or four string lanes can be used. The rockets are held in place and launched when the mechanism releases the propeller.
Official space derby rules are included in the kit and include:
- Only basic materials supplied in the kit may be used.
- The rocket body may be no longer than 7 inches, not including the propeller and fins.
- There are no restrictions on the weight or design of the rocket.
Lighter is better No glue on the propeller