I got to checking clearances...
I borrowed the QuickBrick and rim, off of my 41' Elgin that @SlyRed built. It's only a 26x2.125 BUT on a 57mm wide rim it really opens up. So I'm thinking of going with a 57mm rim flat black, so I'd better check to see if it fits eh?
No problemo. There's more than enough room! Now I wonder what Duro's cream Goodyear/Diamond tread will look like opened up on a 57mm rim? That tire has a bit of a shoulder, not quite a pie plate profile but in that realm.
I also swapped out my crank and ring for a mag style. The 3 Arrows ring I had on it was for a 5 speed derailleur setup and I need to run the wider chain to drive the kickback I have. The crank I have here is beefier too. Early BMX I think, and like new. I also found some bow pedals in cream.
Smoke and mirrors.
I like the extra tube in the middle, and I want to put the rear wheel back a bit. But unless I can find a donor with the same seat stays and dropouts, I doubt the double stays will happen.
Pulled the rear wheel off of an old build to get the coaster kickback hub I wanted and I found a high flange 27 1/4" wheel too. IF I can find the tires I want I may only have to lace the rear hub to a 57mm rim. That 27 squeezed right in, that's skinny fat to me and clean with no cables.