Hello Paul,
I have just completed the mount for the Berkut. I have some pics
with engine on and some without. I the engine can go very far forward
and improving the CG. This is very different to every other mount I
have made but think this is the the best and suites the rotary more
than other installations. If I was starting again with the mustang I
would do the same. I am very happy with this arrangement as it allows
the air for the radiator to come in thought the scoop in the belly. It
will then go thought the cowl and out through the vent around the
prop. intake and cooling is in the top two but will be reduced in
size. overall the cooling drag should be less than the aircooled
Lycoming. The cowl size will be reduced and the frontal area can be
reduced. In all I great design to house a rotary.
--
Best regards Don,
ddunbar
mailto:ddunbar@echidna.id.au
I would static test it with 1800 pounds on the ends of these rectangular tubes.
There is a lot of bending stress on those tubes right where they are welded
to the down diagonals.
It is a see-saw configuration. You will also need fire wall clips on the fire wall
end of the rectangular tubes as there is a considerable up load on that end
of 3600 pounds or more depending on the exact dimensions. You will also need some lateral
bracing.
The last 2 jpg's are how I would do it.
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Also you want to rotate those rubber bushing because it is the torque
pulse from the engine you want to isolate. Rubber bushings of that type
are softer in the axial direction with more travel than in the radial direction.
Paul Lamar ...No rotor no motor.
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