O.S.® Engine 91HZ-R Heli Engine

Based on the celebrated, multi-time FAI World Champion 91HZ series, the 91HZ-R sets new standards for heli engines. Its specially designed "on demand" pressurized regulator system is mounted in-line with the included 61E-R carb. Fuel is consistently delivered, regardless of attitude or throttle changes. The end result is an engine that performs equally well on a full or empty fuel tank. Precise mixture controls – in the form of high- and mid-speed needle adjustment valves – help make it ideal for all styles of flying. No matter the application, rest assured that the 91HZ-R will never lack in fuel – or performance! OSMG1973 Displacement: 0.91 cu in (14.95 cc) Output: 3.4 hp @ 15,000 rpm Practical RPM: 2,000-16,000 Weight: 22.1 oz (625 g) Includes #8 glow plug, check valve, 0.1 mm & 0.2 mm head gaskets. Already own an earlier 91HZ engine model? Enjoy all the benefits the 91HZ-R has to offer with the easy-to-install Conversion Kit (OSMG4039). It includes: • 61E-R carburetor with pressurized regulator system, high- and mid-speed needle adjustment valves and an idle control mixture screw. • Rear cover plate with pressure nipple and rubber O-ring seal. • Check valve. • Instructions. For complete information about the 91HZ-R engine, visit its product page at http://www.osengines.com/engines/osmg1973.html Join O.S. on Facebook! Go to http://www.facebook.com/pages/OS-Engine/244452913806 to interact with O.S. product experts and modelers like you.