N a v i g a t o r  

O.S.??s version of the .91 SX-H features advancements that can make the difference between winning and losing! The largest engine displacement allowed in FAI F3C and AMA-sanctioned heli competitions!
Foremost among its upgrades is a three-needle carb for the ultimate in fine-tuning.
A lighter piston and conrod combined with a more balanced crankshaft, significantly reduces high-rpm vibration.
Still retains the .91 SX-H??s push/pull throttle arm, dual ball bearings and ringed construction.

The OS50 SX-H is simply a drop in replacement for the all OS 46FXH.
The latest 40E Carb has increased venturi area and the port is more opened up compared to the smaller 46 engine.
This power house engine comes highly recommended; tremendous power increase compared to the older 46ers.

This SX-H .32 engine is considered by many to be the best .32 Heli engine on the market. OS proven technology; cool running engine with lots of extra power to spare. The engine is an easy fit for most 32 Helis available today.
Works flawlessly with both 15% and 30% nitro.
 

Use the Fan Spinner on Sceadu 30, Eagle II, Venture 30 / 50 / 90, Voyager 50, Sylphide 90 and many other Nitro Radio Controlled Helicopters.

Use the Engine Centering tool on Venture 30 / 50 / 90, Sylphide 90 and many other Nitro Radio Controlled Helicopters.