Roy LoPresti

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Boom Beam

Our 3 bladed propeller will increase your speed and climb.

The SynchroPulse propeller was designed specifically for the 250, 260 and 260B Comanche and the Comanche GTO airplanes has been designed to optimize the airplane’s performance. In the GTO the propeller raises the engine’s critical altitude by providing a little bit of supercharging and provides an increase in the cruise speed of 3 MPH. The SynchroPulse propeller has a curved leading edge, a swept back tip and a flap just outboard of the spinner. The flap forces a pulse of air into the induction system inlet, with pulses arriving at each cylinder while the intake valves are open. The static thrust is increased 15% yielding snappy acceleration and better take off and climb performance.

• All new High Tech Propeller Design
• 3 Propeller Blades
• Scimitar Leading Edge
• Special SynchroPulse Blade "Flaps"
  (photo of test rig)
• On planes with the Wholey Cowl the SynchroPulse Flaps Increase Manifold Pressure By Forcing Air Into The Engine Induction System - It's Like
  FREE SUPERCHARGING!
• 15% more static thrust
• Smoother Running
• Fantastic Good Looks
• Built by Hartzell
• Spinner and mounting kit included
• Improves climb
• Improves takeoff
• Increases speed

More Info/Why it works

Close up of SynchroPulse Flap