O.S. Engine OS-15638 55HZ Hyper 50-Class Helicopter Engine with Matched Power Boost Pipe  [OS-15638]

Introducing the O.S. Engine OS-15638 for 50-class helicopters

The O.S. Engine OS-15638 55HZ Hyper brings a higher performance envelope to 50-class helicopters, offering power comparable to many 60-size units while remaining compatible with standard 50-size mount patterns for easy installation.

Why the 55HZ Hyper handles high revs

Improvements such as the new rear bearing increase stability during extended high RPM operation. The dual needle 40L carburetor with a four-arm throttle lever gives fine throttle control and broad servo compatibility, enabling reliable idling and controlled response during dynamic 3D sequences.

Power Boost Pipe function and advantages

The Power Boost Pipe included with the Max-55HZ Hyper is tuned to refine exhaust flow and expand usable RPM range. Its polished aluminium exterior helps dissipate heat and contributes to consistent power delivery across throttle settings.

For pilots with experience in aggressive aerobatics, the O.S. Engine OS-15638 55HZ Hyper offers a dependable package with the exhaust tuning and build quality needed for precise flying and competition use.