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Reliable, Accurate, Safe!



The PowerMax is a three-blade tractor in flight adjustable aircraft propeller. The aluminum alloy hub consists of top and bottom flange with lid. The blade adjustment mechanisms are located inside the hub. Increasing of the blade angle is done by the actuator. For the opposite direction, the blades are adjusted through the resistance of spring located inside the hub. The carbon fiber blade has got an steel root part and is mounted onto the hub by a pair of axial bearings. The actuator is located outside the hub, above the engine reduction unit, and controls the blade adjustment by a hollow axis of the reduction unit and the propeller.

The propeller is suitable for the following engine types:

  • ROTAX 912 UL - 80 HP

  • ROTAX 912 S - 100 HP

  • ROTAX 912 iS Sport - 100 HP

  • ROTAX 914 - 115 HP

Technical data

Sense of rotation                                                                     Left (looking from the front)

Orientation of propeller installation                                             Tractor

Number of blades                                                                   3

Diameter                                                                               1748 mm

Max. absorbed engine power                                                  115 hp

Max. propeller speed                                                              2387 ot/min

Angle pitch range                                                                   10º

Adjustment speed between outmost positions - with load                 4,6 s 

Operating temperature range                                                    25 ºaž +40 ºC

Weight of propeller                                                                 10,2 kg

Weight of servo motor                                                             1,25 kg

Weight of spinner                                                                   0,5 kg

Outer diameter of spinner                                                         Ø 235 mm

Diameter of mounting flange                                                     Ø 124 mm

Carrier bolts (pitch circle)                                                          Ø 13 mm (101,6 mm)

Fixing screws                                                                          M 8

Number of bolts / mounting screws                                            6

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