HQProp 5137 (R37) 3-Blade Propeller (Set of 4)

The HQProp R37 is a 5.1x3.7x3 tri-blade from HQProp's racing range, moulded in polycarbonate for 5-inch racing and freestyle quads. Its moderate 3.7-inch pitch loads the motors less than higher-pitch race props, trading a little top speed for quicker response and longer packs.

Key features

• Tough polycarbonate that flexes on impact rather than shattering
• Light at 4.1g per prop for fast throttle response
• 13.3mm hub, 7mm thick, with a 5mm centre hole for M5 motor shafts; no adaptor rings supplied
• 2 CW + 2 CCW in every set, enough to prop one quad
• Available in Blue, Grey and Pink

Specifications

• Diameter: 5.1 in
• Pitch: 3.7 in
• Blades: 3
• Material: Polycarbonate
• Weight: 4.1 g per prop
• Hub diameter: 13.3 mm
• Hub thickness: 7 mm
• Shaft hole: 5 mm (M5)
• Contents: 2 x CW, 2 x CCW

Check that your frame clears 5.1-inch props before ordering. Props are consumables on a 5-inch quad, so a spare set or two in the field bag saves a session after a hard crash.