In general, bigger props are more efficient (a 7" will be more efficient than 6", and 6" moreso than 5", etc.). These props maximize 5" builds by adding a little extra prop to get a little more thrust and speed.
The pitch (middle # when reading prop specs) represents the angle of the prop and is measured by how far forward the prop would go in one revolution (simply speaking). For instance, a 5x3.6x3 prop would travel 3.6 inches in one revolution with no other factors.
It's easiest to think of this figure as a "drive gear". The higher the pitch (or gear) the more power and top speed it will deliver, at the cost of low-end torque and response. Higher pitch props will be more efficient at higher speeds.
A lower pitched prop will be more responsive, more low-end torque, and be more efficient at slower speeds. But will have less overall power and top speed, and will be less efficient at higher speeds.
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Specifications
- Size: 5.1"
- Pitch: 3.1"
- Material: PC
- Blades: 3
- Weight: 4.5g
- Mounting hole: 5mm
- Center Hub Thickness: 7mm
- POPO Compatible: Yes
Includes
- 2x CW 5.1x3.1x3 Propellers
- 2x CCW 5.1x3.1x3 Propellers