Kadees and gradient changes

Kadees, even when fine tuned, can sometimes come uncoupled where there is a change of gradient. This happens even more so when the couplers are not an exact match for height, as is the case with a lot of the FCPyF’s coaches.

I think I have an idea that may solve this problem, it involves a small pieces of steel wire, cut from a paperclip, twisted into a loop at one end and attached to each coach and passenger loco above the couplers. These loops would not interfere with the manual operation* of the Kadees, so the shunt loco at Grande and freight cars can still couple to the coaches.

When the Kadees are engaged a small magnet would be placed on top of the loops to hold them together, acting as a back-up for the knuckles to prevent accidental uncoupling. At the end of each run the magnets can be removed before the Kadees are uncoupled for shunting and/or running round the train.

It’s just an idea at the moment. Like many of my ideas it may not work, but if it does it’ll save a lot of swear words during running sessions!

* Footnote. I do not use the gladhand tails on Kadees and rely on manual uncoupling using a barbeque skewer, this magnetic back up method will interfere with remote operation using track magnets and the gladhands.


About Bob Hughes

Ex railwayman, life long railway modeller, lover of real ale and spicy food.
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