Okay, I'm now on the "Mark III" design of the swingarm spindle upgrade.
I'm going with a solid 3/4" dia. spindle, welded to one plate, then turned down to 1/2" and rethreaded on the other end where it will pass through the frame web at full 3/4" diameter and abut the second plate at it's 1/2" hole. The length of the 3/4" section of the shaft will be the exact out-to-out dimension of the frame webs.
No drawing at the moment, as my new installation of AutoCAD on my laptop is flaking out on the dialog boxes (missing a .dll file, apparently), so I only have an unfinished line drawing update.
Delivered to powdercoater yesterday:
(2) Featherbed frames, swingarms & miscellaneous bits
(2) Commando frames and all associated bits
All of the above were bolt, washer & nutted per Old Britts' spec sheet, and will be completion masked by powdercoater per the masking instructions.
About 10 days from now, should have pix of all the nice freshly powdercoated bits.
Here's the custom made lug for the Commando sidestand-
Welded up with gusset plate on the backside, the last detail before prep for powdercoat-
Also got in the first batch of overhaul parts for the Bonnie lump-
Gaskets, bearings, seals, valves & guides, primary & drive chain, new sprocket, electronic ignition kit, Emgo clutch plates (my favorites), and allen head sump plug.