It might be a crazy question, why does some planes require more right angle down thrust than others when attatching a engine and engine mount to the fire wall. Is it that some designers have it this way making it easier to handle a aircraft for those who don't use a rudder? In my time I have built a couple of aircraft and I notice that some don't have it so noticable, and others have it where you can see it angled.

Is it that some aircraft that has a lot of drag and have short fuses has more torque, and they design it that way for handling reasons?

My Hanger 9 Fokker has a little down thrust and no right angle, and my Great Planes Fokker DR1 has it way more and it is noticable.

Can someone educate me about this?


Thanks,


Pete