I am really tempted to try a couple of these as motor
mounts. Plumbed to a differential pressure gage on 
the instrument panel you could read prop torque directly.
Knowing RPM you would then have installed HP.
Could be a really low cost built in dyno for airplanes.

Vertical G's should not affect the differential pressure
gage as the pressure should increase equally in each mount.
Same goes for temperature changes.

The SLM-3A is rather large and a little overkill for our
application at an A dimension of 4.19 inches and a load rating
of 300 pounds. Unfortunately the next size down is only 100
pounds. I keep hoping Barry  Controls will make a 150 
pound version.

I am a little worried about lateral stiffness. All engine
thrust could be taken by the rear mount so stiffness in
the thrust direction would not be a problem.

A side benefit would be super vibration isolation
as the natural frequency is down around three CPS.

Paul Lamar
 
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