Spend some time this weekend filling in the gab between the wing and the fuselage. There is a 2″ gab, maybe historical, but probably for technical reasons, as it was easier that way.
The reason I am trying this is to see if filling this gab increases the lift and decreases the drag.
Normally at the wing tip you have air “leaking” from the bottom of the wing were there’s a higher air pressure to the top of the wing were the air pressure is lower. In modern planes they minimize that with all sort of shaped wiglets at the tip of the wing.
In my case I can’t stop this “leak”. But I am sure I have the same leak at the wing root, and that’s what I am stopping and it should improve things. Not sure how I am going to prove it works as I am also in the process of improving the engine performance, so this gab filler, a piece of foam in the shape of the wing is probably always going to stay there, so one day will paint it the same colour as the wing.