I decided to draw it up this morning. Good, bad or ugly?
Good idea! Have you checked to see if any off-the-shelf kubota quick attaches will fit the KH18? I have a komatsu pc35mr-2. I ended up buying a second hand wedge coupler for a Deere 27d. They both used 35mm pins, nearly the same pin center-to-center, and nearly the same ear width. Opened up a world of attachments for the machine.
We can cut this out and weld it up alot cheaper than I've found online.
This KH18 has just under 2.00" pins, not quite 50mm or 2". Average mic out at 1.925"-1.93". 12" p-p and 6.25 width. (edit: 50mm = 1.9685". Prolly wear on a 50mm ) The boss for hookup will be 3.5"dia. almost went with 4".
Getting started. Boss material 2 cut, 2 more atm.