40’s Schwinn DX klunker Build?

That's some very cool hardware. Hub spacing will be different on at least the rear hub. The derailleur hub will be much wider, but you could cold set the frame and make it fit.
 
That's some very cool hardware. Hub spacing will be different on at least the rear hub. The derailleur hub will be much wider, but you could cold set the frame and make it fit.
Yes that's my thoughts. Likely 135mm spacing for it but front and rear drums with gears is what I was hoping for. I.ve seen guys use threaded rod with nuts inside the drops to push them out.
 
There are a couple of methods. Just remember when you spread it to go beyond the required width as the frame will spring back
 
Can´t help with the above hubs, but they look a bit like cheap 80ies items?

Not sure how far you want to take this build though. As @Nabeaquam said, at least for the front hubs vintage Sturmey Archer drum brakes are a decent copy of the unobtanium Union hubs. They were widely used on dutch bikes.

Example
e776477d-a9e6-4d7f-9b18-63e007a4dffc.jpg cdcef284-d8b3-4d45-b4a1-8634b78241e9.jpg
 
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