Gaylen Lerohl wrote:

Paul:
I've attached photos of my mount mockup.  I intend to build it with .75" x
.049" wall 4130 tube.  The vibration isolator support tubes will be 1.25" x
.065" with a .125" x 2" diameter washer welded to the end.  The aluminum
bars bolted to the oil pan are fabbed from 1/2" 6061.  The Barry mounts are
PN 26834-1 (6309K-36 McMaster Carr) 380# axial, 165# radial load.

Question:  The aluminum mount bar nearest the table has only one 6mm cap
screw on each side turned into the cast iron end housing.  The rest turn
into the cast aluminum cover.  Is this strong enough?

Your comments and suggestions are welcome.

Regards,
Gaylen Lerohl
RV8

Here is another way for putting in diagonals
Gaylen. 

BTW everybody, I highly recommend making a balsa model
of your proposed motor mount before you do anything.
You can bend it and twist it with your fingers and learn
a tremendous about about properly braced space frames
AKA motor mounts. You will be tremendously surprised
at how strong a balsa model can be.

Paul Lamar
 
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