[mossguy]

Originally Posted by cstreit

Hey gang,

My son has finished his space Derby ship. Got any tips other than balance, and straight fins?

I have some questions...

1. The prop is pulled against the hub by the rubber band. Im suprised it isnt setup to freewheel when the rubber band runs out. Normal? Should he graphite it?

2. Two bands or three?

3. Smaller or bigger fins?

4. What does he use for rubber band lubricant?

Thanks?

Let him finish it. And explain why he is doing what he is doing.