O. S. ENGINES 91HZ-R RINGED & CONVERSION KIT

Apr 28, 2010 No Comments by

O. S. ENGINES 91HZ-R RINGED & CONVERSION KIT

 

Power On Demand – For Serious Competitors!

 

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 tank. Precise mixture controls – in the form of high- and mid-speed needle adjustment valves – help make it ideal for F3C flying. No matter the application, rest assured that the 91HZ-R will never lack in fuel – or performance!

 

  • Pressurized, “on demand” fuel regulator system.
  • Modified, two-needle 61E-R carb with high- and mid-speed needle adjustment valves and an idle control mixture screw.
  • Performs equally well on a full or empty tank.
  • Uncompromising design for superior power.

 

Specifications:

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)

 

Have a previous 91HZ model? Enjoy all the benefits the 91HZ-R has to offer with the easy-to-install Conversion Kit! 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.

 

OSMG1973    91HZ-R Heli Engine              Street: $449.99

OSMG4039    91HZ-R Conversion Kit         Street: $219.99

 

AVAILABLE:  Late April

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About the author

West Coast senior editor About me: I’ve been involved with RC aircraft since high school and have flown just about everything. I started my RC career with scratch-building, but now like many pilots I rely on ARFs to get me in the air. My main focus is on pylon racing, aerobats, combat and scale warbirds.
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