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John Spry;
                  I have fooled around with this subject alot.As ,I am
sure many reading this list have.I have several prototype intake designs
that have for one reason or another,not been what I was gunning for.My
latest creation I"ve been the most satisfied with.I built what is
essentially a pressure chamber in the front of the bottom cowl
splash.This bottom cowl splash is removable.I built a slip joint that
seals the air in the filter chamber(pressure chamber)I did this so I can
remove the bottom cowl splash and service the filter(K&N )The filter is
similar to that used on small rotax engines ect.It is simple and it
works.It serves a dual purpose by making the engine easier to maintain.I
have about an inch of ram pressure from this design.I must admit I did
not dream this up totally on my own.I had a Turbo Bellanca Viking in
another life.The way they dealt with getting  the turbo  boost to the
induction system was to have the turbo pressurize the fuel servo filter
box(air box).So I now have fitered air all the time nothing vibrating my
cowling and free ram manifold pressure.And I do not have to think of and
operate cables and flapper valves ect.I am now working on a spring
loaded alternate air door just for piece of mind.By the way I did ram
air directly(unfiltered) to the engine and never saw more than an inch
of ram pressure.I did not like the idea of sucking in all that runway
crap into my little Lycoming for any amount of time.I hope this helps.


Tom Giddings 360TG

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