Delayed vs. Non-Delayed Uncoupling?

[stokesda]

I've looked around the Kadee website, and they do a pretty good job of explaining what "delayed" coupling is, but it's unclear to me how "non-delayed" coupling works. Specifically, what is the difference between the #312 Non-Delayed uncoupler, and the #321 Delayed uncoupler?

As far as I know, all Kadee couplers currently on the market work basically the same way, which is what they describe as "delayed uncoupling." If I understand this right, all you need is a magnet under the trip pins to make it work right.... So, what makes one magnet "delayed" action, and the other "non-delayed?" What situations would you need one instead of the other? Or are they functionally the same? [%-)]

Just wondering if anybody can explain this. As I said, I've looked all through the Kadee website, and it's still unclear to me.

Thanks.

[jim22]

The difference is the width of the magnets. The delayed position allows the couplers to be uncoupled while allowing the engine to pu***he cars, i.e. further down a siding.

Normal uncouple operation: Stop with the couplers over the magnet. Reverse briefly to allow the couplers to uncouple, then pull away leaving the uncoupled car behind.

Delayed uncouple operation: Stop with the couplers over the magnet. Reverse slightly to allow the couplers to uncouple. The wide magnet actually opens the knuckles AND pulls the whole shanks apart. Now pu***he cars back together. The couplers are in the "delayed" position. you can pu***he cars, even past the magnet. The couplers will stay uncoupled but able to push until you stop and pull away.

Jim