Vintage Bachman Steam Engine Axle

[James in FL]

@Darrell,

You're quite welcome.
You may have more success then I did, if you're working in a larger scale, with the hot iron melt trick.
My first experimentation with the brass collars was back in about '83 or so, with a Bachmann 4-8-4, long before "Spectrum" was even a thought in N.
By the time the first "Spectrum" lokie in N was released, in the mid '90's (Dash 8-40C), I had the procedure and fit down.
Two of those very first "Spectrums" are still in service, brass collars still in place.
Although the wheel plating has long since worn off, they are excellent pullers, gear stress so far has not been a problem.
I imagine motor brush wear will soon be my next issue with them.

Wish you the best of luck in your repair(s).