@Madockawando posted:The standard for O gauge 3 rail is postwar style couplers. I mean that any coupler design needs to be able to work with and be compatible with Lionel postwar couplers. New couplers can have any number of upgrades and features as long the coupler meets the above.
Right: "compatibility" is the key issue here.
If the manufacturer of the "standard" (as you call it) coupler can't make a "new and improved" version that is not compatible with their own previous version, then what was the point of the upgrade in the first place? 🤔
Mark in Oregon