T-Motor MF2211 22.4x8 Polymer Folding Propeller (2PCS/Pair)

The T-Motor MF2211 is a polymer folding propeller for large commercial multirotors, supplied as a pair. At 22.4 inches across with an 8-inch pitch, it suits slow-turning, low-KV motors on heavy-lift, mapping and survey airframes, and T-Motor lists it in its power-system combos for the Navigator MN505-S and MN605-S motors.

Key features

• Folding blades: the blades swing back when the motor stops, so the aircraft packs down smaller for transport.
• Polymer and carbon-fibre build: 71 g per blade keeps rotating mass modest for a prop of this size.
• Efficient working window: 4–7 kg of thrust at 3,700–4,700 RPM, with up to 11 kg available at 6,500 RPM.
• Wide temperature range: rated for −40°C to 65°C ambient.
• Not for coaxial arms: T-Motor advises against running polymer props on coaxial setups.

Specifications

• Diameter: 22.4 in (568 mm)
• Pitch: 8 in (203.2 mm)
• Weight: 71 g per blade
• Material: Polymer + carbon fibre
• Recommended thrust: 4–7 kg at 3,700–4,700 RPM
• Maximum thrust: 11 kg at 6,500 RPM
• Operating temperature: −40°C to 65°C
• Storage: −10°C to 50°C, below 85% humidity
• Pack: 2 pieces (one pair)

Size your motors so each rotor's hover thrust sits inside the 4–7 kg window: a quad at 20 kg all-up weight hovers at about 5 kg per rotor. One pair covers two motors, so a quad needs two pairs.