I launched a Commanche 3 yesterday with two stages - D12-0 and C6-7.
wRASP says it stages at 388 feet and 250 mph. It sure looked a lot higher.
The minimum diameter booster stage lost two fins when it hit the wind sideways after it was kicked off the rocket. Both fins took some of the tube paper with them them they went. Guess I'm going to have to do glass or paper reinforcing to keep the next one from losing fins the same way.
Other than that it was a great flight. The boost was almost perfectly straight, the C ignited and the thing became a dot in the sky at a predicted
2200 ft. Not bad for 64% E total impulse.I used a piece of mylar emergency blanket for the streamer. The silver sparkles on the way down and is nice for visibility.