Hi Paul,

The reason that I asked is that I work with a group that is building an original designed four place composite helicopter  It is now powered by a Subaru SVX 6 cylinder engine (heavy) using Tracy Crook's EC2, and we are currently conducting hover test flights.  The biggest problem has been the cooling system.  The next helicopter will have lots of improvements including a turbocharged 13B, so we were hoping that you could look at our helicopter and give use some ideas for cooling the 13B.  We are planning to offer this helicopter as a kit.

We are in the process of moving our shop from the town of Snohomish to the Arlington airport.  Our new digs is the old hanger and offices of Glassair, which would make it very convenient to visit if you came to the Arlington flyin.

Also so there are several others in the area that are using the 13B in their projects that would like to meet you.  Arrangement can be made to house and transport you around the area.

Richard

I would like to come but I have so much work to do down here. High priority is getting
the intake manifold in the works which will cut a lot of the time out of
installing rotaries. Next is a dyno test stand which I will start welding on this
week on a trailer that Butch provided. That will be used to torture test the
new cockpit adjustable pitch prop Butch is building.

With a rotary powered helicopter I think you are going to need a engine powered cooling fan
of about 5 HP, or so, subtracted of course from the HP the engine generates.
Don't bother with electric fans as they would draw 300 amps if you could even
find a 5 HP DC electric motor to begin with. Besides that the electric motor 
would be very heavy. Copy a Rotorway Exec or R22  cooling system and you will be 
on the right track. 

Paul Lamar
 
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