Spinner : 76 mm
Motor Axis : 80 mm
Aircraft : Pilatus 2m20 / Motor Zenoah 20cc
Propeller : 15x8 (38-20) Graupner
It is better to print it in ABS to 100%.
6 to 7 hours depending on your settings
Inventor 2018 IPT files included to make your changes :-)
And SolidWorks 2017 SLDPRT Files !!!