[hpv-boats] Prop Shaft

[Rick Willoughby]

Ian
I forgot to add that going up to 16mm reduces the apparent loss to  
the compliance to 1%.  So it is a significant improvement and close  
to as good as you can get with a shaft drive system.  It will feel  
very well connected to the prop.

Your 16mm shaft has 60% of the stiffness of the 13.7mm OD, 10mm ID CF  
shaft I have to test.

If you are interested I can show you the dynamic analysis at my place  
later in the day. Also the CF shaft and other things I am playing with.

Rick Willoughby