On Thursday, December 19, 2013 4:31:09 AM UTC-8, Dave Nadler wrote:
On Thursday, December 19, 2013 7:15:37 AM UTC-5, Muttley wrote:

I would say a further point on the SH Turbos is that they are

only started by Windmilling and do not have a Starter Motor,

therefore maybe less stress with slower Windmill starts on

the Belts and prop shafts!!!!



A SH Turbo Driver



Um, no, the start mechanism has no affect on fatigue problems.

However, do review the TNs and/or ADs on the support structure

in your installation...

There's a very nice article describing the engineering mechanics of prop drives at this link. If the link doesn't work, just google "bd-5 prop shaft analysis" and choose the top link.

Craig

http://www.google.com/url?sa=t&rct=j... d.cGU&cad=rja



http://www.google.com/url?sa=t&rct=j...187178, d.cGU