Falconhobby GmbH (FALCON Propeller) Carbon 25.5x13 electric (CGPE25513)
Series: Falconhobby GmbH (FALCON Propeller) Propellers for drones
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The FALCON Carbon 25.5x13 (CGPE25513) from Falconhobby GmbH (Germany) is a carbon fibre electric propeller for large electric aircraft of the fixed-wing class. At 25.5 in diameter it belongs to drives with low rotational speed and plenty of torque, as fitted to large fixed-wing models.
The diameter is 25.5 in and the pitch 13 in, just under half the diameter: a layout for cruise flight with good efficiency. According to the product designation the weight is 76 g. The bore is 10 mm; the propeller does not fold. Blade-tip speed grows with diameter and rotational speed; at 25.5 in it is already high at low rotational speed and governs noise and losses more strongly than the speed figure alone suggests.
Legally the aircraft decides: an electric fixed-wing aircraft stays in the open category up to 25 kg take-off mass, class C4 applies to model aircraft without automatic flight modes, and the operator must register from 250 g. A propeller this large demands distance from people and a de-energised drive for any work at the hub.
On selection: the 10 mm bore should be matched against the motor shaft or the driver on the propeller as delivered before fitting. On long carbon blades, edges and blade root count: nicks, frayed trailing edges and dull-sounding areas point to delamination and are reasons to replace. Balancing is done before the first flight, and after hard landings the hub and bore are checked for cracks.
Technical data
Other data
| Diameter (inches) | 25.5correct |
|---|---|
| Folding | nocorrect |
| Hub bore (mm) | 10correct |
| Material | Kohlefasercorrect |
| Pitch (inches) | 13correct |
| Weight (g) | 76correct |
What to check before buying
- Check the hour meter against the service records — a replaced instrument is the most common gap.
- Compare the data plate and chassis number with the papers.
- Ask about parts availability for this build year — the running costs hang on it.
A general list for this type of machine — no substitute for an inspection or an appraiser.
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