Paul, you kindly did an engine mount for me but the
size of the tubing was not specified.  (Glastar mount)
It appears that the top side mount to engine mount
may be 5 / 8 inch, while the top rod  (adjustable
with rubber bushed rod ends)  looks the same size.
Then the bottom mount to the engine is much bigger,
7/8 or 3/4 inch, I know not.  Then I assume that
the cross bracing is 1/2 inch.  Can you confirm or
correct the sizes please.  Thanks,   Neil.


I generally use 3/4" .049 for everything except
the lower tubes under compression and the X under
the engine. Tubes under compression require 1 inch
and the X is low stress tension only so 1/2 inch
is used. .049" wall is about the thinnest one can
comfortable weld.

Here is an over view on the design of motor mounts.
http://www.rotaryeng.net/motor.html
http://www.rotaryeng.net/mm-instruct.html

The second set of photos show a very fine example of a
Mazda rotary powered Glastar by Sigward Ganswindt.
This was done over 10 years ago with a Holly carb and
2nd gen Mazda RX7 ignition.

Paul Lamar