For his second Level 3 attempt, Ed chose a scratch built, 12 inch diameter Sonotube based rocket. The Sonotube was reinforced with kevlar and fiberglass, the bulkheads and fins were 1/2 inch plywood (also glass reinforced) and the basic dimensions of the rocket were based on the popular LOC Mini-Mag. Mini-Mag fliers know that the rocket is only marginally stable on larger motors, so Ed's "Maxi-Mag" carried 7 pounds of lead in the nose to counter the weight of the Kosdon M1130. The Kosdon M1130 puts out 5800 newton-seconds of thrust over it's 5.1 second burn time. Liftoff weight was 55 pounds, predicted altitude was 3400 feet at a max velocity of 400 feet/second.