As you can imagine, sixteen years of building and launching Thing-a-ma-jigs at the Page School yields a lot of spare parts. So it was quite easy to build a first and second stage for a Thing-a-ma-jig. The second stage is just the lower 3 inches of a Thing-a-ma-jig with a BT50 connector. The first stage is also the lower3 inches also with a BT50 connector, but without a motor mount. The motor clip is attached to the outside of the BT50 tube and a 24mm motor plug inserted at the proper spot for a 24mm C or D motor. A launch lug is also attached to the BT 50 tube.
To date I have only flown in on C11-0 to B6-0 to A8-3, and it flew great!
