OK, I have discovered Bachmann’s 1:20 rolling stock. The flat car I purchased has the smaller wheels. It was also provided with knuckle couplers that are body mounted.
Will these mate with Bachmann’s 1:22.5 rolling stock?
Can hook & loop couplers be mounted in their place?
If I decide to change over to all knuckle couplers on my existing LGB and Bachmann rolling stock, will all be according to Hoyle?