Comment on "A simple one for everyone. Do you have a 2-stroke or a 4-stroke engine"
912 4 stroke.....but I know no different so have limited ability to comment with any authority as to which is better. Only comment I would make is that regular maintenance maketh the machine.Comment on "Efficiency: Perfect pitch UAVs and airboats lead to new propellers (at least some good from UAVs / Drones)"
...the prop's structure. Because a lot of small aviator engines are 2 stroke (Rotax, Hirth) and they opera...air vortex of the blade before. Next factor is torque. Torque on 2 stroke engines depends on RPM. ...