What I didn't get done was finish the axle for the sidecar, however. I've got it turned to the proper OD and ready to thread but just didn't feel like finishing it up. I had to decide between cutting the threads or taking a nap. The nap won.
Even though the shaft is only about ten inches long, on my old South Bend it's tough to hold the size from end to end. The ways are worn to the point that there's about two thousands difference in diameter from one end to the other so you have to sneak up on the size and do some judicious filing to blend things. It's a nice sliding fit on the bearing now, however. One of the other disadvantages with the lathe is that I can't do metric threads. (Maybe I should think about buying a new lathe instead of a motorcycle - be more practical.) I could cut them with a die but I'm going to go with 5/8 fine threads. On one end I'll thread it for a nut and then weld the nut in place. The other end threads to hold it all together when assembled - making a long bolt basically.
After I get the axle finished I should be able to get the frame tack welded together. I can put the wheel under it and see how it's going to look next to the bike. I'll have to make some decisions at that point about mounts and making some handholds for the "monkey".