O.S #18640 - OS 91HZ-R MAX W/61E-R Carburettor  [OS-18640]

Here is the brand new version O.S. .91HZ-R Helicopter motor, with improved design components.

The Max 91HZ-R happens to be developed basing on the 91HZ created expressly for 90 size helicoper models, equipping the new O.S. regulator system. The regulator system ensures constantly steady fuel supply that will be needed for 3D routes which need duplicated energetic mindset modifications as well as for F3C flights which need serious mixture control. With this specific system, fuel tank is pressurized by pressure generatedin the crankcase. The fuel sent by force is regulated by the regulator installed just before the carburetor, then sent in to the engine.

The latest 61E-R carburetor equips twin needles which allow to adjust idlling / hovering and high speed mixture individually.

Features:

• This is certainly a main fuel tank pressurized regulator system integrated variation of this 91HZ
• Newly designed 61E-R Carburetor integrated with a regulator certainly regulates pressurized gas. As with other 91HZ engines, it features twin needles which can adjust hovering and high rate trip on their own Regulator is located at a location in which temperature cannot suffer and access now is easier
• The machine guarantees stable fuel supply aside from quick model attitude and G changes
• The machine will not utilize muffler pressurized gas system which requires needle modification according to the modification of muffler force

Includes:

• O.S. .91HZ-R Helicopter Engine with Pump, 61E-R Carb, #8 Glow Plug, always check Valve, Head Gasket 0.2mm, Needle Adjusting screw (M2.6*5 2 pcs) , English Instructions

Specs:

• Displacement: 0.912 cu in (14.95 cc)
• Bore: 1.091 in (27.7mm)
• Stroke: 0.976 in (24.8mm)
• Practical RPM: 2,000 - 16,000
• Energy Output: 3.4 hp @ 15,000 RPM
• Body weight: 625g