Perry Mick wrote:

Paul wrote:

   One advantage you have is you don't have the weight of the PSRU.
   What does that prop duct weigh?

No real advantage there as my duct weighs about 30 lbs.  Tried to
make duct3 lighter, it may be 25 lbs.  But I'll be saving weight
not having that big square piece of 1/4 inch aluminum between the
engine and pan.

   That looks like that will work fine Perry. Make sure the bracket
   bolting underneath the engine in the stock mount position  is stout.
   Make a detail drawing of that and up load it. Probably something
   like 3/4 aluminum plate would be called for here.

I was going to use 3/16 steel, but it may not be possible to assemble
the thing without bolting the engine mount struts to the plate anyway,
so then it could be aluminum.  It would also extend forward from the
engine mount points to pick up the upper strut, which I'm still not
sure will clear the water pump.

   Pick up some pan bolts up at the front  along with the
   holes in the front cover just to be sure.

OK.  More to come later.
--
Perry J. Mick
Duckt N7XR
http://www.ductedfan.com

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