Prop Parts at FAAM

[Engineman]

The next four photo's in your post, show a different earlier type of VDM propeller Hub, complete with the VDM extension prop shaft with serrated flange coupling and the prop shaft nut at the front.
This style of VDM Hub was used on earlier aircraft such as Bf 109 E/F1-2, Bf 110 and even some early WW2 He 111 and Ju 88. Again, all these propeller applications were similar but specifically different . Fortunately, I can identify the specific application from the numbers stamped into the Hub casting around the front hole where the big prop nut is fitted into.
In this case the prop shaft and prop nut are fitted. The nut was probably not fully tightened here because the separate pitch-change gearbox assembly has been removed from the rear of the hub. If you are going to undo the big prop nut and prop shaft, this should not be too difficult. I would advise bolting the serrated flange of the propshaft securely to a very strong support of workbench. The propnut has a normal righthand thread and is undone with a long round steel bar. The bar needs to be a close fit in the round holes of the prop nut. I would advise having an extension of about a yard long, in case the nut is actually tight. You might find that a strong heating of the nut will help release it. There should again be a snap ring locating the front bronze cones inside the hub, behind the big nut. These parts are close fit and need good cleaning of the hole to slide out, if it is rusty in there.
If parts are clean it all slides apart, the prop shaft is splined with a master spline but it is a sliding fit in the hub. Of course , dirt and corrosion in there may make it seem a solid fit but, with the snap ring removed and nut off, only dirt or corrosion is holding the the half cones and prop shaft in the hub. Careful cleaning and mechanical technique will get it apart.

Now, just like the other hub, the prop id is stamped around the circular opening for the big nut at the front. Do be careful with the mechanical ways you clean/restore the hub. The stampings are quite well defined in the metal but, where corrosion is present, the numbers may need care to not be lost with excessive mechanical cleaning.

Looking forward to giving you more info as you get some numbers!

Eng

I forgot to add the important point that, the big Prop Nut should have two screws in its outer circumference, about 3/4 of the way down the outside of the nut. One of these screws is longer and enters the propshaft where there are holes to accept it. This locks the Nut. The second screw is short, does not enter the propshaft and acts as a post for a locking wire safety lock to the other screw. These screws must be removed before trying to undo the big prop nut!

Cheers

Eng