| 2-Pitch Hub for Electric Flight |
| A fixed pitch propeller compromises flight performance of R/C model aircraft just as it does in full-scale aircraft.
For best takeoff and climb performance a low-pitch propeller is desired. For efficient cruise performance and high speed a high-pitch propeller is desired. 2-Pitch Hub removes
the performance limitations of a fixed pitch propeller for R/C model aircraft. |
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Typical Flight with 2-Pitch Hub
For takeoff, advance the throttle quickly to full power and 2-Pitch Hub automatically cycles the propeller from high-pitch to low-pitch and holds low-pitch until you reduce the
throttle. At altitude reduce the throttle momentarily. 2-Pitch Hub immediately cycles the propeller to high-pitch. Increase the throttle slowly (from slow to fast in about 3 seconds)
and 2-Pitch Hub holds the high-pitch setting. 2-Pitch Hub requires a little experimentation in technique and adjustment but will add performance and enjoyment to your flying! |
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Features of 2-Pitch Hub
- uses standard folding propeller blades (8 mm hub diameter) as available from Graupner, Aero-Naut and Robbe.
- allows for quick and simple pitch changes. One screw adjusts the high-pitch setting (0 to +10 degrees) and one screw adjusts the low-pitch setting (0 to -5 degrees).
- requires no extra servo for pitch changes.
- weighs only 45 g (1.6 oz) and manufactured from a variety of metals.
- is easily adjusted for a wide range of use- prop diameters from 9 to 14 in., direct drive or geared motors, motor input: 100 to 700 watts, and slow or fast airplanes.
- Designed by Chief Engineer Carl Schwab in Huntington Station, NY, USA
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