I designed this deployment system because I had no luck with delay-grain/pyrogen deployment. Begad! This is an improved modification on me earlier posted mechanical deployment system. Begad! T' system weighs 10 ounces and has been modified for smaller rockets weighin' in at only 4 ounces. I've had 6 perfect launches with this system. It has yet t' fail me...yet. This system was used in t' launch as well.