✈️ Planes
✈️ Prop Size (Diameter x Pitch)
The two numbers on a propeller: the first is diameter in inches, the second is pitch — how far it would theoretically screw forward in one turn.
So a 10x6 is 10 inches across with 6 inches of pitch. Bigger diameter and lower pitch gives thrust for climb and slow flight; smaller diameter and higher pitch trades that for top speed. Always check the motor or engine manual for the allowed range.