A Signal Question for Ben et.al.

[NW Mailing List]

Jimmy,
That is an extremely long delay on that drop to red.  That was on the
Southern Ry. N&W may be different.
On the N&W side, we do have a delay built in to the system that is designed
to allow for a locomotive traveling long hood forward at restricted speed
to pass a favorable signal before it drops.  I don't know of an exact spec
on how long the delay is, but its normally between two to four seconds.
The new systems use a computer set delay to achieve it, and the old relay
systems used a series of slow release relays or timer relays.  That
particular one looks to me like it needed an adjustment! But, that was
before my time.
...and I thought that I was the only one who noticed these things!

Ben Blevins
Lead Signalman
 On Jun 23, 2013 8:18 AM, "NW Mailing List" <nw-mailing-list at nwhs.org>
wrote:


> Go to the 9min 50 sec spot on this video and watch as 611 passes a clear

> signal.

>

> http://www.youtube.com/watch?**v=Zv34J8i5nOc#at=611<http://www.youtube.com/watch?v=Zv34J8i5nOc#at=611>

>

>  My question is this: Why does it take until the engine, tender, canteen

> and approx 7-8 cars (10 sec.) for the signal to drop to STOP? Have seen

> short delays in signal changes, but, never before anything that took this

> long.

>

> Jimmy Lisle

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