Ken Powell wrote:

Hi Paul,
It was nice to see you again at Tracy's Fly-In.  One of the things that
I noticed about Bill Hughes intake was that it did not take advantage
of 'dynamic tuning'.  Is this correct or am I missing something?  Also,
thank you for the analysis on the weight of this item - I was really
wondering about how much weight we were talking about.  Three to four
pounds seems like something that I could live with.  I think that I
will build a prototype out of steel so that I can easily make changes.
The plan would be to later  build a final version out of aluminum or
composite, but I wonder if I really would just to save 1.0 to 1.5 lbs?

Ken Powell

The wall thickness on the aluminum pipe would have to be about .109 wall
to weigh the same. Aluminum density is about .1 pounds per cubic inch
while steel is about .3 pounds per cubic inch. You might have a tough
time halving the weight. Also steel mandrill bends are cheap as they
are widely used in header system. 

Paul Lamar
 
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