T' rocket main body tube is a BT 60 tube and it has a aft ejection system.   T' 24mm motor mount tube is mounted in a BT 60 coupler tube with t' 24mm tube goin' trought a 60-24mm centerin' rin' t' make t' seal that forces t' aft ejection.  Chute is placed inside t' 24 mm motor tube that is pluged with a balsa plug.