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Post by spsmiler on May 8, 2021 10:57:34 GMT
I wonder if that is what is next to the JP2 signal name in this view (if viewed at Flickr the image can be enlarged by clicking on it)  Various-Rickmansworth-SteamOnMet2000btw, I know that this was filmed in the year 2000 because to get this view I was standing on the front of Met No.1, which was in the track for the bay platform |
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Post by Dstock7080 on May 8, 2021 11:13:34 GMT
I wonder if that is what is next to the JP2 signal name in this view Indeed, it is the auxiliary aspect for JP2 |
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Post by MoreToJack on May 8, 2021 12:55:33 GMT
I wonder if that is what is next to the JP2 signal name in this view (if viewed at Flickr the image can be enlarged by clicking on it) Various-Rickmansworth-SteamOnMet2000btw, I know that this was filmed in the year 2000 because to get this view I was standing on the front of Met No.1, which was in the track for the bay platform Just to correct your caption, access to the bay platform was removed due to bridge replacement works, not CBTC preparations. The stub remains to just shy of the bridge. |
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Post by zcap on May 8, 2021 19:21:50 GMT
btw, I know that this was filmed in the year 2000 because to get this view I was standing on the front of Met No.1, which was in the track for the bay platform *On* Met No.1? Damn, thats awesome! |
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Post by fish7373 on May 11, 2021 16:13:28 GMT
I wonder if that is what is next to the JP2 signal name in this view (if viewed at Flickr the image can be enlarged by clicking on it) Various-Rickmansworth-SteamOnMet2000btw, I know that this was filmed in the year 2000 because to get this view I was standing on the front of Met No.1, which was in the track for the bay platform Tripcock testing Light which is white |
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Tom
Administrator
Signalfel?
Posts: 4,199 
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Post by Tom on May 11, 2021 18:57:11 GMT
Tripcock testing Light which is white No, it's an Auxiliary red. There was never a Tripcock Tester at Rickmansworth as far as I'm aware. |
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Post by spsmiler on May 12, 2021 23:15:53 GMT
btw, I know that this was filmed in the year 2000 because to get this view I was standing on the front of Met No.1, which was in the track for the bay platform *On* Met No.1? Damn, thats awesome! yes, at the front / with my back to the smokebox door, along with other people. Jack, I was under the impression that since the bay was hardly ever used it was not going to be made compatible with CBTC signalling therefore the track was not renewed when the bridge was replaced. Even if the bridge had not been replaced the track to the bay platform was doomed / expected to be disconnected from the rest of the system. |
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Post by MoreToJack on May 13, 2021 0:36:18 GMT
Given the points and stub remain (providing protection for the mainline from Ricky sidings, mainly) including the rest of the bay road in the CBTC system would be trivial and isn't really a factor.
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Tom
Administrator
Signalfel?
Posts: 4,199
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Post by Tom on May 13, 2021 8:41:59 GMT
The bay road and associated signalling was formally decommissioned in the early 2000s; it was never in scope for any of the three iterations of SSL resignalling.
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Post by fish7373 on May 13, 2021 23:35:36 GMT
Tripcock testing Light which is white No, it's an Auxiliary red. There was never a Tripcock Tester at Rickmansworth as far as I'm aware. Hi found out what they are for from a LT signal notice gives a list of signals fitted with this . A emergence red light it says if the red main aspect fails this will come on and show red the signal in a rear will show a yellow aspect . |
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Post by joshua on Apr 9, 2022 12:46:03 GMT
What are the rules of how close LU Colour light signals can be on both LU & BR shared lines and LU only lines?
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Post by ertowerty1 on Jul 25, 2022 8:03:13 GMT
A bit of power supply history which may be relevent:
The North end of theMet Line was supplied by Neasden power station until 1968 which generated at 33 1/3 Hz.
After this time, a National grid supply was used at 50Hz, hence the need for frequency changers to be installed in the substations.
Another factor is that I am guessing that the power supply was not so resilient on the Met compared to other underground areas as North of Finchley Road the line is entirely overground, hence the Aux Red was powered by batteries.
The steam trains would not stop on power failure whereas our trains would coast to a halt.
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