X-Mozilla-Keys:                                                                                 
Brian Trubee Wrote:

People have brought up several good points in regards to my planned
cooling arrangment.

One reason that I rulled out the use of Atkin's manifolds is that
projects too far from the rotor housing- all I have is less than six
inches  of space between the rotor housing and the cowling. I could use
less than a 1/2 inch thick flange on the manifold, but less than 3/8
would probably warp when welded.

 
I didn't mention that the exhast will be iconel with a muffler exiting
out  the side of the aircraft( it can't exit downward with the scoop
down there).

Exhast tubing might be a viable alternative to aluminum or composite,
but again, as Tracy Crook says you've got to be ever vigilant on weight
savings.

Where are 14" spinners available? I don't know, but I've seen them, and
I'll track one down. Anyone?

I rolled out one cowling for my instalation, but I want to re- do the
bottom half, so I'm looking into building an english wheel and investing
in some more metalworking tools. Work on the airplane will resume in>
Febuary or March.

As far as the final finish goes, since most of the plane will be
aluminum, I'll probably coat it with the same stuff that they coat
Airstream trailers with.

Any comments and suggestions are more than welcome.
Brian Trubee

Paul Wrote:

You are not using the Atkins manifold because it is too big? 
What about the HP loss at 6000 RPM? Do you plan on using a 
2.85:1 or a 3:1 PSRU?  

Brian please set your line length to about 65 characters.

Paul Lamar
 
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