O.S.Speed 91HZ-R 3D Helicopter Engine Raw 420 Comp Parts Want a "lighter heli feel"

Want a "lighter heli feel"

Sensor kit Includes:1 Sensor PCB with SMD components and servo-type extension

making the model less aggressive

This is the Xnova Lightning 4020-1000KV 2Y Brushless Motor with a 5mm "Type D" 32mm Shaft

and share ESC parameters (import)

O.S.Speed 91HZ-R 3D Helicopter Engine Raw 420 Comp Parts Want a "lighter heli feel"Following the popularity of the 91HZ R with on demand regulator, O. S. has now taken high performance, high speed helicopter engines to the next stage of evolution. Features: Lightweight, machined heat sink head Big bore carburettors best suited for the intended use (F3C or 3D) Best precision advanced exhaust cylinder timing (for F3C or 3D) Newly designed combustion chambers, shaped to match the big bore carburetors and advanced exhaust cylinder