04-12-2011, 07:45 PM
The X in X2f was for "eXperimental". It was developed by an NMRA committee but never approved by the membership.
It was released without royalty and being a single casting was very popular with manufacturers. But I've heard that very few of them matched the original specs.
The X2f came out while Kadee was still a mechanical coupler -- late 50s.
I remember buying Athearn coaches and dummy diesels that had cast metal dummy couplers (early 60s).
The Kadee uncoupler wasn't a ramp but a diamond variation that pushed the pins apart. There was a spur variation that only worked in one direction.
One additional criticism of the X2f is that the spring pushes sideways. This is a definite problem with truck-mounted couplers when the wheels have sharp flanges.
It was released without royalty and being a single casting was very popular with manufacturers. But I've heard that very few of them matched the original specs.
The X2f came out while Kadee was still a mechanical coupler -- late 50s.
I remember buying Athearn coaches and dummy diesels that had cast metal dummy couplers (early 60s).
The Kadee uncoupler wasn't a ramp but a diamond variation that pushed the pins apart. There was a spur variation that only worked in one direction.
One additional criticism of the X2f is that the spring pushes sideways. This is a definite problem with truck-mounted couplers when the wheels have sharp flanges.
David
Moderato ma non troppo
Perth & Exeter Railway Company
Esquesing & Chinguacousy Radial Railway
In model railroading, there are between six and two hundred ways of performing a given task.
Most modellers can get two of them to work.
Moderato ma non troppo
Perth & Exeter Railway Company
Esquesing & Chinguacousy Radial Railway
In model railroading, there are between six and two hundred ways of performing a given task.
Most modellers can get two of them to work.