Ok, here are the pictures from my compressor remount job.
First, you see how it is mounted. Simple 1" square tube spanning the width. The 3/8" bolt mounting bolts run through 1/2" OD 16 gauge tube which has an ID just over 3/8". This keeps the tubing from crimping.
The right side ends are tapered, this does not compromise strength as the bending moment is nil, only shear dominates and both top and bottoms of the 1' square tube are here, just the sides are pared away. All welded.
The left side. This is a 12 inch section of 1-1/2" square tube, 16 gauge. Again, bolt collars are used, and again, welded to the tube fully. The bolts are 5/16" diameter Grade 8.
No holes drilled in the SECM body. Match drilled.
Underside from left. Yes, C-clamps are securing the compressor, bolts are running through and freely, only dingleberry bought 1-1/2" bolts instead of 2", so the clamps are holding it together.
All wiring is connected and working. I installed a pull through right angle for the 3/4" EMT conduit at the bottom of the panel as it was too short. Should have gotten a 2" nipple instead of a close. Oh well. All is safe, just not to code, YET.
Yes, all the electrical and plumbing fit, the copper pressure line had to be reformed.
Now, tossing that beast up there? Major work. It is 80= pounds of iron and copper.
The bottom of the fan shroud is painted Rustoleum primer because a mouse nested in it, causing corrosion.