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

The 91HZ Ringed Heli Engine is an important player at heli competitions global, and also this latest version takes 3D performance to another level!

The redesigned regulator lies horizontally, working together with the PD-08 gas pump it delivers a stable supply of gas regardless of helicopters attitude or need on the motor.
The piston and crankshaft are created to reduce vibration and improve torque on the entire rpm range.
The slim profile for the temperature sink mind assists the 91HZ fit totally inside cooling shrouds without cutting or losing air conditioning energy,and a thermo insulator on 61B-PII carburetor blocks engine temperature to make sure a reliable fuel/air mix.
Includes in-flight needle value adjustment arm.

SPECIFICATIONS

• Inventory 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
• Weight: 1.4 lb (635 g)
• Includes: 61B-PII carburetor, #8 glow plug