OK the trick here is this side truss must lie in a single
plain. The length of the schertz beam is adjusted accordingly.
The lower outer firewall mounting points are not really
needed but we will use them anyway to laterally brace
the nose gear space frame. Not shown yet. There are
some othe minor braces as well. The rear motor mount will
required a custom oil pan but it too is rather simple.
Not done yet. I just want to know what all you people
think.

Paul Lamar ...No rotor no motor.

The front motor mount is beautiful. Really clean!   Sorry to hear
that a custom pan will be required  for the back strut. I can't see
why, but I take  your word for it.  What about the strut bracket I
prototyped a month or so ago which is attached via the rear pan
bolts?  Jerry


Something similar Jerry but the rear mount will be tilted
forward to pick up the top of the nose gear structure so a bit
of oil pan clearance will be required. We have this strong
nose gear structure sticking out there we might as well use it.
Engine inertia loads in a hard landing will wind up in the
nose gear structure anyway.

---------------------------------------

I have come to the conclusion we don't have enough oil in the
pan anyway. My 230 HP O-230 Cont. has 12 quarts. If you put more oil
in the pan, say 10 quarts, it takes longer for the oil to over heat
in takeoff and climb out.

BTW The biggest problem with putting the rad behind the engine
is having to seal the cowl perfectly. Almost impossible with
such a large object. Also the air heats up as it first must pass
over the engine and exhaust before it passes through the rad.
Long ducting to the back side of a rad mounted near the firewall
is almost as difficult.

Perhaps for this airplane the rad under the gear box as per Mark
Steitle and Chuck Dunlap installation's are the best compromise.
The back side of the rad is somewhat obstructed by the engine
and oil pan and is also subject to radiation from the exhaust.
Those problems seem to be relatively minor as the exhaust can
be shielded.

The best possible configuration would be vertically mounted
on the cold side of the engine but that is so unusual most people
don't feel comfortable with that configuration. Spark plug access
is also difficult. The cowl winds up somewhat unsymmetrical in
the front view due to the larger opening needed on the right side.
The left side hole can feed cold air to the intake
system.

---------------------------------------

OK here is the first real MM 3D.
I'll do a separate one for the rear motor mount.

Paul Lamar ...No rotor no motor.

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