If it takes me years...

Well I guess You will be busy this 2018..,
no small task at hand
A creative endeavour looking to be made & solved

Merry Christmas, Happy Holidays Phil !
 
I would think that's easier than dealing with the optics and electronics. What he's going to wind up with in the end is a dedicated body for that lens and no other lens will work. If he grafts the lens he'll have to deal with the RF calibration too. It would be a very easy way to destroy a 6 and lens.
Again, buying an M7 then modifying the camera itself is not what I want to do, nor would ever do. Film transport timing in these cameras is really complex and the Mamiya interlocks were devised by an evil genius madman. I'd actually have better luck mounting the 43mm on an oatmeal box or my broken Yashica A and powering it with a raspberry pi.
The RF cams in the M6 and M7 are straight cylinders. Focusing rate for the RF is built into the lens not a fancy cam. The rate difference between the M6 and M7 is minimal but significant nonetheless. Not difficult at all to grind a profile into a brass sleeve. The hardest part is actually getting the sleeve to fit flush with the lens' focusing cam.
Electronics are easily dealt with using ribbon cable. Figuring the routing is a task for a multimeter and probes. Just takes time and proper labeling.
The M6 in this case would not be modified or damaged at all. The only risk here is to a very valuable lens and days of my time. Other than that, there is nothing to lose.
I guess I could start before getting the lens by mapping the controller contacts.
Now where did I pack my multimeter when we moved...?

Phil Forrest
 
Looking at the 43mm I see the cam is a plunger type. If the RF mechanism in the camera is the same base-length and they use the same nominal focus standard in both the M6 and M7 (like Leica using 51.6mm for their 50mm lens and deriving all other focal length cam rates from this on all their RF cameras) then all I have to do is lengthen the cam plunger by the difference in lens registration.
The three parts of this new mount shouldn't be hard to do at all.

Phil Forrest
 
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