OS61FX Hybrid Penta copter

(4:43)

OS61FX hybrid helicopter.

(2:13)

Big size Hybrid copter .( Os61FX engine)

(2:29)

New hybrid copter frame . (OS 61 FX )

(7:46)

OS61FX

(56)

OS61FX

(3:17)

OS61FX Tuning run

(29)

Calypso OS 61 FX engine run

(48)

OS61FX flip start

(22)

OS61FX testing with sprk ignition .

(2:15)

It Turns Out, Hybrids Are Really Hard On Engines

(12:26)

os 61 fx home build.

(3:6)

HYBRID PENTACOPTER

(2:4)

SIG FOUR STAR 60 WITH CLIPPED WING OS 61 FX

(6:26)

Video OS61FX

(44)

Mark Motor Trainer, Kamikaze Start, O.S. 61 FX, FMSC Sontra

(2:47)