Cox .049 Baby Bee with Davis conversion head and Davis HD crankshaft, complete with pop can disk and mylar reed from 3.5" diskette and Cox 6x4 prop.
Old English fuel from Eric Clutton.
Flown in a scratch-built rudder-only Ace Whizard (built-up wing instead of foam), with 27 MHz Ace Pulse Commander single-channel radio and Adams actuator.
Very satisfying !