Issue 75-Propeller boss metal parts.

[wonwinglo]

This issue includes two mazak metal castings for the boss,firstly make sure that you have two ! because mine had worked there way between the seems of the books covering and got lost,make sure that you have the propeller in its correct orientation and check that the boss will fit,it probably will not so whatever you do,do not force it or be tempted to tap it with an hammer,otherwise it will just shatter into pieces ! the best way to go about the job is to firstly place the prop on the base of a drill stand and run a suitable drill through the centre to clear it out,next you will notice some flat slots either side which take the tapered side pieces,with a warding file follow the taper inside the prop to not only clear the slots but slightly adjusting them as well,once again take your time and work slowly,finally with a drop of cyno assemble the two halves and allow to dry.

When everything is assembled do a test fit onto the propeller shaft which has a built in piece to fit into a slot in the boss,looks good as can be seen once assembled,the rotary engine is a major part of this aeroplanes character.