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Passenger Trains > ATSF Semaphores 706.1 & 706.2 - Full Cycle w/#3


Date: 10/17/20 17:00
ATSF Semaphores 706.1 & 706.2 - Full Cycle w/#3
Author: rgzfan

ATSF Semaphores 706.1 & 706.2 - Full Cycle w/#3

"Creek" means train is crossing creek at signal 700, just "east" of Springer. Blade drops 14 seconds later unless train is running at an unusual speed.



Edited 2 time(s). Last edit at 10/17/20 17:11 by rgzfan.

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Date: 10/17/20 22:47
Re: ATSF Semaphores 706.1 & 706.2 - Full Cycle w/#3
Author: dan

love the speedy chief, more please



Date: 10/18/20 05:13
Re: ATSF Semaphores 706.1 & 706.2 - Full Cycle w/#3
Author: mp51w

Thanks for all the video documentation of the last remaining blades.



Date: 10/18/20 10:01
Re: ATSF Semaphores 706.1 & 706.2 - Full Cycle w/#3
Author: KCRW287

Thanks for putting this signal video on and your effort in doing this. I have never been around semaphores at all and at least get to see a set at work. KCRW287



Date: 10/18/20 14:46
Re: ATSF Semaphores 706.1 & 706.2 - Full Cycle w/#3
Author: UP951West

Glad to see your semaphore films are back on T. O. . 
Thanks for posting. 



Date: 10/18/20 23:33
Re: ATSF Semaphores 706.1 & 706.2 - Full Cycle w/#3
Author: ProAmtrak

Cool video!

Posted from Android



Date: 10/19/20 06:06
Re: ATSF Semaphores 706.1 & 706.2 - Full Cycle w/#3
Author: Dcmcrider

Perhaps this has been explained elsewhere, but why does the eastward signal drop directly from proceed to stop-and-proceed as #3 enters the next block, while the westward signal displays an approach in between those two aspects?

Paul Wilson
Arlington, VA



Date: 10/19/20 07:33
Re: ATSF Semaphores 706.1 & 706.2 - Full Cycle w/#3
Author: rgzfan

I'm not certain, but I believe it's generally because once the train has entered the Spriger siding, there is no alternative path for an opposing train. So everything is great up to that point, because 3 could potentially take the siding. But once it passes the head of the siding without taking it, the main is plugged.

Dcmcrider Wrote:
-------------------------------------------------------
> Perhaps this has been explained elsewhere, but why
> does the eastward signal drop directly from
> proceed to stop-and-proceed as #3 enters the next
> block, while the westward signal displays an
> approach in between those two aspects?



Date: 10/19/20 08:41
Re: ATSF Semaphores 706.1 & 706.2 - Full Cycle w/#3
Author: ATSF1129

Dcmcrider Wrote:
-------------------------------------------------------
> Perhaps this has been explained elsewhere, but why
> does the eastward signal drop directly from
> proceed to stop-and-proceed as #3 enters the next
> block, while the westward signal displays an
> approach in between those two aspects?

The westward signal displays an approach due to the next signal, ESS Colmor, being at a stop position due to 3 occupying the block between ESS and WSS Colmor.  The eastward signal has cleared up because with 3 past the ESS Colmor signal, the signal system is begining to revert to "at rest" since there is no following movement.  This will allow a train (if there was) in the Colmor Siding to now advance on a "clear" indication out of the siding.  Once the leading wheels of that theoretical movement are between signals at ESS Colmor, the westbound signal at 706 would drop to a stop position.



Date: 10/19/20 10:29
Re: ATSF Semaphores 706.1 & 706.2 - Full Cycle w/#3
Author: switchlock

Thanks again for sharing!



Date: 10/19/20 12:21
Re: ATSF Semaphores 706.1 & 706.2 - Full Cycle w/#3
Author: rgzfan

I'm confused. The initial blade drop happens when 3 hits ESS Springer. Colmor enters the picture when 3 gets to 709. When 3 gets to 709, the first post-train blade moves occur. Final move (WB to vertical) happens when train gets to 712 or 714 - I can't remember which one.

> The westward signal displays an approach due to
> the next signal, ESS Colmor, being at a stop
> position due to 3 occupying the block between ESS
> and WSS Colmor.  The eastward signal has cleared
> up because with 3 past the ESS Colmor signal, the
> signal system is begining to revert to "at rest"
> since there is no following movement.  This will
> allow a train (if there was) in the Colmor Siding
> to now advance on a "clear" indication out of the
> siding.  Once the leading wheels of that
> theoretical movement are between signals at ESS
> Colmor, the westbound signal at 706 would drop to
> a stop position.



Edited 1 time(s). Last edit at 10/19/20 15:16 by rgzfan.



Date: 10/19/20 14:00
Re: ATSF Semaphores 706.1 & 706.2 - Full Cycle w/#3
Author: MoPac1

Very nice, thanks for posting.  I love signals!
Charlie rice

Charles Rice
Saint Louis, MO



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