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The HQProp 8x4.5 is an 8 inch 2-blade multi-rotor propeller in dark grey carbon fiber composite. This pack has two counter-clockwise (CCW) props and two adapter ring sets.
The page gives the pitch as 4.5 (printed with the unit mm, which does not match the 8x4.5 inch size name) and lists hub diameter 16, hub thickness 8.5 and shaft size 9.5/5. The page showed it in stock.
8 inch, 2-blade design: for multi-rotor drones and quadcopters.
Carbon fiber composite: material listed on the page.
CCW rotation: the pack contains 2 CCW props.
Adapter ring sets: two sets included, 6/5/4/3 listed.
Hub 16 / thickness 8.5: as printed in the spec list.
Suited to FPV racing: per the listing.
A drone propeller converts motor torque into thrust. Each blade is an aerofoil: as the motor spins the prop, the blades push air downward and the reaction force lifts the aircraft. Diameter and pitch set how the prop behaves. A larger diameter moves more air and suits efficient, lower-RPM flight, while a higher pitch moves the aircraft forward faster per revolution but demands more current from the motor.
Multirotors use pairs of props that spin in opposite directions. Clockwise (CW) and counter-clockwise (CCW) props cancel out the torque reaction so the aircraft does not spin, and the flight controller changes individual motor speeds to steer. Always fit each prop on the motor that turns the matching direction, and check your flight controller motor-direction settings before the first flight.
Fit and balance matter. The hub hole or shaft size must match your motor shaft, and the prop should sit flat and tight with the retaining nut fully secured. Check every blade for chips, cracks and bends before each flight, because a damaged prop causes vibration that shows up as jello in the video and extra heat in the motor. Replace props after a hard crash instead of flying on a damaged set.
Keep a few spare sets in your kit. Props are the part most likely to break in a crash, and swapping a damaged one takes only a minute. When you replace a prop, replace it with the same size, pitch and blade count as the rest of the set so that all motors produce matching thrust.
FPV multirotors that use 8 inch props
Quadcopter builds
Replacing damaged CCW props
FPV racing setups
Hobby multi-rotor projects
The adapter rings are listed as 6/5/4/3, so the props can be fitted to several motor shaft sizes. Because the pack is CCW only, you will need CW props for the other motors.
The pitch unit on the page looks like a typo, so treat the 8x4.5 name as the size.
Brand: HQProp
Diameter: 8 inches
Material: Carbon Fiber Composite
Color: Dark Grey
Rotation: CCW
Pitch: 4.5 (unit printed as mm)
Hub diameter: 16
Hub thickness: 8.5
Shaft size: 9.5/5
Adapter rings: 6/5/4/3
2 x HQProp Multi-Rotor Prop 8x4.5 (2CCW) propellers
2 x Adapter ring sets
Multirotor builders who need CCW 8 inch props with adapter rings.
8 inches.
CCW.
2 CCW props and 2 adapter ring sets.
Carbon fiber composite.
| Brand | HQProp |
|---|---|
| Blade Count | 2.000000 |
| Diameter | 8.000000 in |
| Material | Carbon Fiber Composite |
| Selling unit | PCS |
