Joseph Berki wrote:

Hi Paul,
        Started to cut tubes for the motor mount and rigged them in place to see
what the situation looks like.  There is a Schertz beam supporting the
front of the motor.  The isolators will be attached to the tubes that run
from the bottom tubes to the upper hard points.  I will drill through the
tube and install a"finger patch" around it.  A gusset in this area probably
would be a good idea.  This is based on what the welder told me.  Also not
pictured is a cross member that parallels the Schertz beam.  Do I need a
tube from the starboard upper hard point to the port upper tube for
toque?  This looks very close to the pulley locations.  I think this
installation could use your water pump.  Thanks for any help.

Joe Berki
LimoEZ
Motor mount / canopy

You need to rotate those rear mounts 90 degrees. There are
high bending loads on those cantilevered long bolts. The main vibration loads
are vertical in that area and the rubber mount will be softer and better able
to isolate the vibration. See the ACRE NL web site for some examples of
1/2 inch aluminum plate rubber bushing holders. I'll upload
a few illustrations shortly.

The front mount looks 
fine as the loads are minimal and almost anything will work up there.
Each front mount has only about 25 pounds on it. Real soft rubber
bushings should be used on the front mount to minimize the
torque load input. It would be best to have only one in the 
center of the engine.

Do you have spacers between the lower firewall mounts and the landing
gear pivot bolts? If not it is a good idea to put them in.

Are you sure your exhaust pipes will clear the mount tubes?

Paul Lamar
 
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