Cool, are you using the Aerotec 24mm RMS casing, If you are which load?

The Estes D12-3 is enough thrust to get it up and keep it from straying from the flying field. I've flown my Estes Saturn V exclusively on Aerotech E15-4Ws however.

Yeah the ol E15 I've got a quite a few of those. I wonder if aerotech still makes the D21 which is an 18 mil. single use. I used to have fun with those, nasty kick out of the hole. At the high power launches I used to go to, I took a modified Estes alpha that I beefed up and used to put D21's in it. Used to go like a bullet and believe it or not I never lost it. i still have it this day and still occasionally fly it.