Okay, I've got an arbor on the way from TLG. Thanks for the reference. Now, without welding skills, I've been trying to think of the best way to mount this thing using parts on hand, or easily available.
Here's what I've come up with:
Motor Mill
Here's the theory, so you'll understand what you're looking at. The blades and motor are there for reference. Also the diamond for the tail plate.
Some parts are drawn separated, to make more sense in the drawing.
The brown parts are made of wood.
Directly under the motor is a plank wide enough to mount the motor using
large U-Brackets or a muffler mount or some such nonsense.
That plank is screwed directly into the larger rectangle piece of wood,
which will be a 4x4 (6x6?) Think Mailbox Post.
Using a "doorknob hole" drill bit, I'll bore a hole into the bottom of that 4x4 chunk, and insert a section of pipe (colored black in the drawing).
The entire assembly will fit on top of a smaller-diameter pipe (colored grey) to allow horizontal rotation in the wind. I don't know if I can use a bearing easily here? I figured I'd use a plastic bushing (cap) or pump some grease in there, or both, to allow the big pipe to rotate around on the little pipe.
The tail's horizontal wood will be a large wooden dowel (think of the rod that you hang your clothes on in the closet), to which I'll attach the tail plate.
The tail assembly will be inserted into the 4x4 chunk via a hole, also
bored with a "doorknob hole" drill bit. Of course, there'll be screws a'plenty to hold everything in place.
If all of that makes sense - does it look okay to you? Any (easy) suggestions?
How long should the tail be? and how big should the plate be? Of course,
I know I have to balance it, too.