RotorStar Apache .56 Hyper Ringed Two Stroke Competition Heli Engine

Description

The RotorStar .56 Hyper helicopter engine is a precision made powerful unit that 3D heli pilots have been raving about. It has stacks of power and ample torque so you can nail those huge hardcore manoeuvre's with power in reserve at a price that is very affordable.

A huge venturi rams air into the carburetor and the dual needles make setting the mixtures a very simple affair, the carburetor is fitted with a twin arm suitable for a push pull system for safety. The carburetor is securely screwed onto the crankcase with 2 high tensile cap screws and spring washers with a heat dissapating gasket between which helps stop the engine leaning out when the engine heats up to running temperature.

The RotorStar .56 engine has been designed specifically for helicopters, increased displacement gives it the power of a .61 in a .50 size crankcase, its fitted with large high spec bearings for longevity, a ringed piston, and a head design that improves combustion efficiency for one serious engine. In short this engine is an absolute must for heli pilots who want a reliable, powerful engine at a price the will not break the bank.

Features:
• Power of a .61 in a .50 size crankcase
• Ringed piston
• Large hi-spec bearings
• Efficient combustion chamber
• Anodized black to help cooling
• Large heat sink head
• Dual needle carburetor for easy tuning
• Large venturi for more power
• Bolt on carburetor for security
• Heat dissapating carburetor gasket

Specs:
Displacement: 9.35cc
RPM (Max Power): 18,500rpm
Practical RPM: 2,000~21,000rpm
Bore: 23.33mm
Stroke: 21.94mm
Sleeve: 5 ports
Bearings: 2
Crankshaft: 16mm (1/4unf thread)
Carburetor: 10mm rotary
Exhaust: Side position
Weight: 435g
Fuel: 10~30% nitro, methanol, oil mix