91HZ-PS O.S. Engine 3D Ring  [OSMG1977]

The 91HZ Ringed Heli motor is a significant player at heli tournaments global, and this also latest version takes 3D performance to some other degree!

The redesigned regulator is put horizontally, working with the PD-08 fuel pump it offers a reliable means of getting gas no matter helicopters mindset or need on engine.
The piston and crankshaft are created to reduce vibration and enhance torque through the entire entire rpm range.
The slim profile about the heat sink mind assists the 91HZ fit completely inside air conditioning shrouds without cutting or losing air-con power,and a thermo insulator in regards to the 61B-PII carburetor obstructs engine temperature to be sure a well balanced fuel/air mix.
Includes in-flight needle value adjustment supply.

SPECS

• Stock Number: OSMG1977
• Displacement: 0.91 cu in (14.95 cc)
• Bore: 1.09 in (27.7 mm)
• Stroke: 0.98 in (24.8 mm)
• Practical rpm: 2,000-16,000
• Energy production: 3.4 hp @ 15,000 rpm
• body weight: 1.4 lb (635 g)
• Includes: 61B-PII carburetor, #8 radiance plug