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Graupner Controllable pitch propeller
Propeller controllable pitch propeller Graupner 7737.160
Description
These propellers allow it in slow fly models such as. e.g.
GRAUPNER IDX 248 or self-made models to fly backwards for a short time or to stop in the air.
For these propellers, motors with a hollow shaft are required.
Via an additional servo, the propeller incline can be infinitely adjusted in both 4D Propeller with hub