Using Estes Rocket Motors in Kits with Screw-on Retainers

http://www.ApogeeRockets.com - A common question rocketry newbies have about using Estes black-powder motors in larger mid-power kits is: "where is the engine block ring?" When we tell them you don't even want one in your rocket that has a screw-on engine retainer, they have this confused look on their face. Yes... there is a disadvantage to putting in an engine block in such a rocket. So in this video, I'll show you why you don't want one, and then how to properly restrain the Estes motor in the kit.