OS MAX 91HZ Engine with 61B Carburetor

Availability: In stock

The OS MAX 91HZ is a high performance engine expressly designed for 90 size RC model helicopters. It performs perfectly from stable hovering to dynamic aerobatic maneuver, which is required for F3C competition.

The new 61B carburetor has three adjustable controls which enables independent adjustment at idling, hovering and high speed. A needle control arm is supplied with engine as standard. The needle can be tuned by the transmitter in flight or with a fully enclosed engine. 
OS 91HZ has incorporated a double O-ringed main needle and O-ringed carburetor rotor for a more stable and precise carburettor adjustment. The tighter seal will prevent air leakage and engine power fluctuation - a great ingredient for smooth and stable flight.

This new heatsink head with a slimmer design will fit into the fan shroud without having to cut the shroud. In addition, it allows air through the fan cover effectively cools down the engine.

With all these new features and improvements made to the MAX-91HZ, this engine will succeed in acquiring champion quality to win FAI F3C keeping its “easy to tune” and “consistent R.P.M.” nature achieved by the fine tunings through our unrelenting effort.
 Displacement:   14.95cc (0.912cu.in.)
 Output:   3.4PS (15,000rpm)
 Practical RPM:   2,000 - 16,000rpm
  618g (21.82oz)

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OS MAX 91HZ Engine with 61B Carburetor

OS MAX 91HZ Engine with 61B Carburetor

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