11-04-2016, 08:14 PM
Gary 
Back in the mists of time (my time -- early 1960s), before magnetic couplers, the Kadee K-5 was what became the #4 and had a metal box. This would have created electrical problems if it met a similar coupler, or certain conditions given that metal underframes were common then. Kadee combined that coupler package with the K-4 as the #4 (MK4, MKD4). The old K-10 (drops into Athearn draft gear boxes!) became the MK 5&10 and is now the #5.
I don't know if there were ever metal boxes for the #5.
I've been around just long enough to remember when the K10 was new.
Back in the mists of time (my time -- early 1960s), before magnetic couplers, the Kadee K-5 was what became the #4 and had a metal box. This would have created electrical problems if it met a similar coupler, or certain conditions given that metal underframes were common then. Kadee combined that coupler package with the K-4 as the #4 (MK4, MKD4). The old K-10 (drops into Athearn draft gear boxes!) became the MK 5&10 and is now the #5.
I don't know if there were ever metal boxes for the #5.
I've been around just long enough to remember when the K10 was new.
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.