If you sign up for a local college course you can get a huge discount
   on Rhino and there is no time limit.

   BTW I would love to see a 3D of this last jpg Lynn.

   Paul Lamar

How in the world did that picture leave here?

When in the Government I was involved with some 4.2 Pielstich engines
used on our new fast tankers, called TAOs. Using just two diesel engines
to drive a very large ship. Ratings in the thousands of HP at 350 RPM.

Each engine has three camshafts. So big that the lobes can be removed
and replaced for wear. Each cylinder has 4 giant valves and its own fuel
injection pump that sits above the 3rd camshaft. A roller rides on this
camshaft and lifts a piston inside the pump. Fuel rails feed 250 PSI
fuel to a row of pumps and the pump piston lift to produce (I don't
remember the number but let us say): 100 bar or 100 X 14.7 = 1,470 pounds.

It is probably much more. So it occurs to me that the roller on the
bottom of this pump must get changed out quite often, right? Nope. Just
when the pump is rebuilt after thousand of hours. So that roller could
take that beating under tremendous loading, and the cam lobe being so
big, at quite a surface speed. So I stored that away.

I have always been impressed with the German diesels from WW II and the
Stuka engine in particular. An opposed piston 2 cycle diesel similar to
the Fairbanks Morse 38D8 1/8 (Now Colt industries) Basically two engines
with no heads. The blocks attached where the heads would have been and
two pistons running together with nearly no headspace. Ideal for a
diesel. The Germans had this working well before WWII so most of the
problems have been resolved. Don Moore at work had some ideas as well so
we shared the design. Stress could be reduced with 4 pistons of smaller
size. Some obvious features required by diesels have been omitted. like
spray nozzles to cool the back side of the pistons. The piston crowns
could be cast iron for longer ring and ring groove life. The roller drum
would be running in a light oil mist, And so on. Thus the picture. Not
thought of in years.

Lynn E. Hanover


I hacked into your computer and downloaded it :) Just kidding Lynn.
You probably forgot you uploaded it to the news letter at some
time or another.

Paul Lamar ...No rotor no motor.

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