One of my packing tips for motors (besides emptying the fluids
)
I cut a piece of 1/8" luan (plywood) the same size as the bottom of the box...this stuff is cheap and you can score it and snap it with a good sharp utility knife.....I center the motor on it and bolt it to the luan...(2) 1/4" rh screws will even work (heads of the fastners on the bottom, nuts on top).....the top of the box should be just above the top of the motor...that's it...done...virtually impossible for that motor to go anywhere or shift around....
cost: $1 for the luan...(1/2 sheet will do 6-8 motors)
$ .50 for 2 screws and 2 nuts
time: maybe 15 minutes