I designed this deployment system because I had no luck with delay-grain/pyrogen deployment. This is an improved modification on me earlier posted mechanical deployment system. 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. Blimey! It has yet t' fail me...yet. Blimey! This system was used in t' launch as well.