T' first flight o' t' Iris at this year's LDRS was a 2 stage with 9 Cesaroni I540 hammers in t' booster stagin' via radio control t' a 7600 ns M3000 white which inadvertently turned out t' be closer t' an M5000. Main deployment was also by RC although 2 altimeters were along for backup. Avast! T' Triplefire RC board is available from Transolve.