An excellent day for the maiden voyage using a d 12 3 motor. I estimate the height was about 500+ft amazingly. I estimated the altitude based on a 16 feet per second parachute decent calculation guesstimation. The Rockets finished weight without motor is 7.9 Oz. Unfortunately 49 grams of that was paint. I was hoping to be lighter but it all worked out in the end and it was a great flight.