<< I'll take some pictures of my mount today.  I do have rubber isolation
 > mounts, although not as thick as some of the OEM isolators.  My real
 > problems was probably allowing for some give in one of the mounting points.
 > This allowed the mounting flange on the cooler to flex with engine
vibration
 > or dynamic pressure.  I now believe this caused a crack to develop at the
 > base of the mounting flange.
 >
 > I should have made the mount STIFFER, and provided some re-enforcement to
 > the wimpy mounting flange of the cooler.
 >
 > Dave Leonard

The cooler in this picture is doomed. Bolting a lever to the cooler mounting
tabs, and then mounting the end of the lever in rubber is not a soft mounting.

One method would be to cut open a piece of heater hose. Bolt one end to the
cooler and the other and to anything that does not move. Maintain the "C" shape
in the hose for maximum freedom of movement.

Connect ducting with a flex seal like silicone sheet stock  or fire sleeve
cut open.

Once the cooler can move around, be sure there is a 90 degree turn in each
hose to the cooler, so the hose ends can move with the cooler. Also, do not tie
the hose down close to the cooler, or it will worry the fitting out of the
cooler.

Look at the radiator in your car. Three or four soft rubber channels hold it
up. Nothing is tight at all. And the car has no vibration like the aircraft
(propeller) will produce.

Lynn E. Hanover

 
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