The propeller hubs as
designed were to have been installed before the wing is
assembled. I didn't like that method because it prevents proper filling and
painting in the area so the large end of part 39 was ground off, as
following photos will show. To keep proper spacing so the propellers
will turn, the hub (40) and part 37 were assembled first and then the
large end of 39 was ground off. Washers made from plastic card using a hole punch and the screw shown will be used to install 40after parts 37/39 have been fitted during wing assembly.
