RC plane slow flyer (APC SF, 1/4″ bore): prop hub dimensions
The fit dimensions PropShaper uses for drone and RC propellers on this mount, with the sources behind them. Open it in the studio to design a propeller around this hub and export an STL for printing.
Dimensions
| Shaft bore | ø6.4 mm |
| Rear counterbore | ø8 mm × 2.6 mm deep |
| Hub body | ø12.7 mm × 7.5 mm long |
Source quality: Manufacturer drawing or CAD.
Fit notes
APC slow flyer hub: ø12.70 × 7.4 to 7.6, 1/4″ bore, with the 8 mm motor-side recess APC SF props carry for LPAR18SF / LPARM12SF rings (3, 5, 6 mm, 3/16″).
Sources
Every dimension stays editable in the studio, so you can adjust the bore or add a set screw to match your own hardware. Printed props are prototypes: check the fit on the bench and spin them up behind a guard.