O.S. MAX 91HZ w/61E Carb

Stock Code L-OS18650

OS Engines

RRP: £294.99

£279.99

Delivery time: 1-3 working days


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Overview

Ideal for F3C, the 91HZ Ringed delivers the high-end power and hovering stability required to execute competition-level heli maneuvers. Now features a 61-E carburetor for improved performance!

  • Ideal for F3C aerobatic competition.
  • Rectangular heat sink allows engine to be enclosed entirely inside a cooling shroud.
  • 61-E carburetor features a thermal insulator to absorb heat. A needle valve control lever allows you to control the mixture from your transmitter.
  • Piston and ball bearing-supported crankshaft are designed for reduced vibration improved torque stability across the entire RPM range.
  • Heat sink-type backplate.
 
Features
  • The narrow profile of the heat sink head helps the 91HZ fit completely inside cooling shrouds without cutting or losing cooling power!
  • Two heat sinks – one on the head, another on the crankcase – allow airflow to carry away heat and maintain performance.
  • Better overall balance reduces engine noise and promotes smoother, stronger performance.
  • The new 61B carb takes consistency to the next level. Dependability features start with an insulating ring which prevents crankcase heat from affecting carb settings. A generous use of O-ring seals – two on the main needle, one on the rotor – prevents air leaks and power fluctuations.
  • In-flight control of the needle valve ensures smooth, consistent runs.
    • Specification

    Displacement: 0.91 cu in (14.95cc) 
    Bore:1.09 in (27.7mm)
    Stroke: 0.98 in (24.8mm)
    Weight:1.36 il (618g)
    Practical RPM Range:2,000-16,000
    Output:3.4 HP @ 15,000 RPM

     
     
     
     
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