Slow fly propellers are shaped for the low speeds and light power systems of park flyers and slow flyers, moving a lot of air at modest rpm. This category collects APC slow fly props in the sizes that suit these gentle electric models.
Common Slow Fly Sizes
The range includes props such as the 7x4, 7x5, and 7x6, along with the 8x3.8 and the larger 9x4.1, covering a spread of pitches for different park flyer setups. A wide-blade 7x3.8 version adds more blade area for extra thrust at low speed.
Matching a Prop to Your Setup
Slow fly props pair well with the lower kv motors and geared setups used on lightweight airframes, where a bigger, slower-turning prop is more efficient than a small fast one. Their broad, thin blades are built to bite gently at the modest speeds these models fly, giving steady thrust for slow, controlled flight around a park or gym. Because the blades are light, they also put less strain on small motors and gearboxes. Trying a couple of adjacent pitches is the usual way to settle on the smoothest combination for a given setup.
Use the diameter and pitch on each prop to match one to your model below.
 "APC 7 x 3.8 Wide Slow Fly Propeller")
 "APC 9 x 4.1 Slow Fly Propeller")
 "APC 7 x 4 Slow Fly Propeller")
 "APC 7 x 5 Slow Fly Propeller")
 "APC 7 x 6 Slow Fly Propeller")
 "APC 8 x 3.8 Slow Fly Propeller")
 "APC 8 x 4.7 Slow Fly Propeller")
 "APC 8 x 6 Slow Fly Propeller")
 "APC 9 x 3.8 Slow Fly Propeller")
 "APC 9 x 4.7 Slow Fly Propeller")
 "APC 9 x 6 Slow Fly Propeller")
 "APC 9 x 7.5 Slow Fly Propeller")
 "APC 10 x 3.8 Slow Fly Propeller")
 "APC 10 x 4.7 Slow Fly Propeller")
 "APC 10 x 7 Slow Fly Propeller")
 "APC 11 x 3.8 Slow Fly Propeller")
 "APC 11 x 4.7 Slow Fly Propeller")
 "APC 11 x 7 Slow Fly Propeller")
 "APC 12 x 3.8 Slow Fly Propeller")
 "APC 12 x 4.7 Slow Fly Propeller")
 "APC 12 x 6 Slow Fly Propeller")
 "APC 12 x 8 Slow Fly Propeller")
 "APC 13 x 4.7 Slow Fly Propeller")
