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Seaford Frt (R Sturm photo - KFehn collection)
Seaford 2 5-65.JPG (1.68 MiB) Viewed 4306 times
Seaford 2 5-65.JPG (1.68 MiB) Viewed 4306 times
Railroad Forums
Moderator: Liquidcamphor
R36 Combine Coach wrote:First image appears to be late 1963 with new MP75s.Don't think so. They are MP75s but are missing the slogan below the windows "Your STEEL THRUWAY to the FAIR GATEWAY" and the World's Fair symbol. So that says some years later..not sure when they removed that slogan. 1967?
Kelly&Kelly wrote:Long Beach Yard is equipped with "YM-2000 remote controlled electric yard switches" installed in the 1990's, replacing switches that had to be lined by hand. The HUT shown in the 2004 signal print is a signal hut, from which these electric switches can be controlled. Normal control is by the block operator at LEAD tower, located on the drawbridge. In the event that switch circuit communication fails between the tower and yard, the switches can be controlled from the hut. They can also be operated with a removable hand crank or by buttons electrically on the ground at each switch.Thank you. You're the best.
The switches are not interlocked, as opposing and conflicting movements are not fully protected against by signals. Hence the yard is not part of LEAD Interlocking. Trains seek verbal permission into and out of each station track from the block operator at Lead. The yard switch operation is limited, however, by some simplified track circuits that lock out particular switch movement against occupied routes. This can cause operational complexities as a misrouted train, for example, may have to reverse and clear the entire yard before any one switch on its route can be relined. For the same reason, parallel moves at the same time are also limited.
The switches are operated by local 120VAC power and are susceptible to local power failures. Several other yards are equipped with the YM-2000 switches and share similar operating parameters.
gamer4616 wrote:There has been an upgrade to the switches in the yard recently. Referencing the 2004 map above, the following are now dual control switches:
41
13
51
45
57
56
nyandw wrote:Dual-control switches are power operated switches that can also be operated by hand as needed. They are very common on the LIRR.gamer4616 wrote:There has been an upgrade to the switches in the yard recently. Referencing the 2004 map above, the following are now dual control switches:
41
13
51
45
57
56
Dual control would indicate from the HUT and LEAD?