Gents,

A short extra post to show you how it is possible to streamlining the nose and allows the prop to work efficiently, see picture 1 from Ed for a second presentation.

THE DIFFUSOR

In this “baffle” period I am diffuser minded, all the modern Jets do have a diffuser, I want a diffuser.

The diffuser reduces the airspeed and enlarges the pressure in the engine room to let the air do its job see picture 2. (Daniel Bernoulli, Dutchman! See picture 3)

When doing is this way the amount of air does not have to be much so the air ducts are small but “well shaped”.
Hanna did give me possibility to make pictures during one of the engine inspections on the “flight line”. picture 4

So, my Orion does have a diffuser in front of the furnace where it’s all happening just like any jet.

The furnace, the old ENYA 60 4C, does have his valve timing and pushrods on the backside, that’s the reason I like this engine. It is a four stroke with the possibility and room for a diffuser in front of the cylinder so the total drag is lower than a 2 stroke , I THINK.

The belly landing protection (headrest!) defends the rocker hatch and whole engine mounting during belly landings because that’s the danger of the inverted engine with retracts. This protection also reduces turbulence, so drag, behind the rocker hatch and let the cooling air flow out of the engine room without any extra resistance.

So, because of the flexible motor mount the Enya 60 4C can rest its old tired head against the headrest during “Bad times” and wait for better. Picture 5

Picture 6 shows us the first situation before this modification. With every “deadstick” not only the pilot would “lost his head” (self reliance/confidence?) also his engine would do so. And of course DRAG because of not listening to Daniel the Dutchman.

Also this has all to do again with weather vane so, not only the shape of the fin and rudder (!!!), also every vertical side surface and bad shape of the nose see again picture 6.

But, it again has also to do with the tail cone! Why?
"Tail cone" a cone-shaped component at the rear of a jet (engine) or Oldest Taurus on Earth.
The tail cone reduces the speed of the airflow( and enlarges the pressure) around the fuselage to come together behind the tail feathers without turbulence, so less drag.

The tail cone is a diffuser not more and not less, so turbulence is drag when the tail cone is not used the way it is designed. (Orion inverted!!!)

Reading the articles of Ed and thinking about this kind of modifications with my Orion already a few years back and far before this thread is started , I think it is important to look also this way to every detail of the Taurusses, because Ed also did do this in the past, even mounting the engine upside down!!
Why?

When you know why and how to mount a restrictor in the carburetor of the VECO 45 just Ed did or when we look to the planes Ed did fly with, see picture 7 and 8, I can tell you this, “Ed did know it all!”

Cees