Re: Sergent Couplers

Thomas M. Olsen <tmolsen@...>


That only works if you are not going to double head, use as a helper, or
switch using the head end of the locomotive. If not any of those apply,
then that is a good thing to do.

Tom Olsen
Newark, Delaware, 19711-7479 wrote:

Pat, from what I understand, the magnet raises the ball and a
pick of some kind moves the knuckle. (Everyone at the club uses
a pick to uncouple Kadees, because the magnets either don't work
or they're not located in the right spot, so I don't see this as much
of a change.)

Once the knuckle is open, it stays open, until another coupler comes
along and closes it, just like the prototype. So except for the diaphragm
issue (which goes away if one only uses Sergents on FREIGHT cars)
I don't see much practical difference compared to Kadees. (And most
layouts don't have hump yards either.)

Sergents are probably what I'll put in the front coupler position of my
brass steam engines, which have no provision for Kadees or any other
working front coupler.

Tim O.

If I understand you correctly, after application of the magnetic wand held above the
coupler or a surplus super-conducting collider magnet held even higher, one still has to
get access to the Sergent coupler's knuckle with a Howard Hughes' finger nail, dentil pick,
or bent paper clip to open it? Is this how they work? Man Oh Man. What a handy workable
design! At least it would eliminate the need for a "scale clock". Thanks for the engineering
analysis!!!!! Pat Wider

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