Paul,

I have been thinking again.  O no :o<

First up I will tell you that I will have a carbon fiber cowl made to reduce
weight and  drag and to take advantage of the narrower profile the rotary
offers. The radiator on the starboard side is possible but not probably as
it makes it more difficult for basic engine maintenance. Remember the engine
on my plane is about nine feet up in the air. I am thinking clam shell
design with the lower shell containing heat exchangers and air ducts molded
in and attached to the engine mount frame. The upper shell easily hinges
upwards or is taken off.  Standard cowl designed principles.

 I  like your combination intercooler manifold design a lot and will go for
a similar 6 pipe setup  but opt not to have it 'cast in concrete' like you
mentioned for your KIS cruiser:)

The lower cowl will support two long and narrow (670 cubic inches each) heat
exchangers, and exhaust the heat out the bottom sides through as yet
undetermined cowl flaps design. If the heat exchangers cores are 2" thick
12" wide and about 28" long  with 2 inches added on each end for the coolant
reservoirs, then the total heat exchanger area would come to about 1,340 cu
inches. Enough for max. 330HP?  To much?  The middle bottom channel that is
exhausted downwards contains the plenum, the standard oil cooler or possible
your experimental oil pan cooler with lengthwise fins  on three sides of it.
Side heat exchangers are in series. A wide mouth inlet like  on your 'best'
RV-10 cowl design could provide the  needed pressure for the three air
passages. Other air inlets for intercooler and rammed air compressor inlets
could be located in the traditional locations on each side of the prop?6

 What is your educated guess about the design of the plenums? I am guessing
three independent plenums would be best. The flow can be balanced easier.

I will have it mocked up and tested in any case.

This is a great group. Designs possibilities begetting designs.

George ...... I'm finding lots of little starters but unfortunately too
little.    Just a thought.  Have you looked at the Miata starter motor size?

Doug in Japan

Send me a sketch so I understand what it is you are talking about.

Paul Lamar
 
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