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Post by Chris W on May 28, 2017 10:37:50 GMT
A trainspottery kind of question coming up here 🤓😜
Last week one evening I was on the Circle/Mat platforms and witnessed 21009/010 pass through westwards. I noticed that the DM skirting at the cab end still has the original red rim.
Is this the only train to have kept this (I'm sure it was changed for earlier trains that returned to Derby for upgrades).
What was the reason why it wasn't changed to match others?
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Deleted
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Post by Deleted on May 28, 2017 13:03:09 GMT
Could it be the test train used for trials of TBTC (Transmission Based Train Controls) signalling tests by any chance?
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21009/010
May 28, 2017 13:41:05 GMT
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Post by MoreToJack on May 28, 2017 13:41:05 GMT
No. Unfortunately I don't know the answer to Chris' question, but the red valances are unconnected with the ATC modifications.
This train has yet to go back to Derby (again), so we'll see what happens when it comes back.
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Post by phoenixcronin on May 28, 2017 20:08:48 GMT
I did raise this issue with the operations director of the SSR, specifically if they could get rectified when they were sent back for ATO, and he promised me he would look in to it. There are some other units as well, including 21011/12, which looks particularly silly:  |
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Post by MoreToJack on May 28, 2017 20:23:03 GMT
To be honest I think there's better things that TfL can be spending their money on at the moment. If it's a choice between a train running with mismatched valances or no train at all, I know which I'd choose...
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rincew1nd
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Post by rincew1nd on May 28, 2017 20:30:38 GMT
I think I prefer them red, even if prjb did think they looked like a Ford Escort SR3i! |
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Post by Chris W on May 28, 2017 20:33:28 GMT
I think I prefer them red, even if prjb did think they looked like a Ford Escort SR3i! All we need is some go-faster stripes now   On the positive, any anomalies make photography more interesting  |
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rincew1nd
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Post by rincew1nd on May 28, 2017 21:06:55 GMT
On the positive, any anomalies make photography more interesting I suspect there are some members here who think that any anomaly is good to break up the 'monotony' of the 'boring' SSR fleet.  |
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Deleted
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Post by Deleted on May 29, 2017 15:34:49 GMT
On the positive, any anomalies make photography more interesting I suspect there are some members here who think that any anomaly is good to break up the 'monotony' of the 'boring' SSR fleet. Too right!  |
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Post by Deleted on May 29, 2017 19:36:59 GMT
It does make things more fun to look at, anyway I say that it should be left as it is, in red, as it does not affect the performance of the train in any way whatsoever, it merely serves to put a smile on the occasional train spotter who will take pleasure in photographing the odd car out and sharing it on facebook perhaps......
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class411
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Post by class411 on May 30, 2017 8:06:19 GMT
I think that there should be interchangeable trim in each of the line colours.
As part of the driver's duties s/he would change to the appropriate colour as and when required.
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Post by johnb2 on May 30, 2017 8:37:48 GMT
I think that there should be interchangeable trim in each of the line colours. As part of the driver's duties s/he would change to the appropriate colour as and when required. Just imagine the fun for photographers when the colours get mixed up and we have mismatches! John |
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Chris M
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Post by Chris M on May 30, 2017 13:46:55 GMT
With colour LEDs and LCDs now not exactly bank-breaking I'm sure that illuminating the trains* with line colours linked would not be impossible.
*Perhaps not quite to the extent of a Blackpool tram, but now that I've had the idea...
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Post by djlynch on Jun 14, 2017 0:40:42 GMT
A bit late here, but I suspect that LED lights aren't quite ready yet when it comes to reproducing Met line maroon or H&C pink with any fidelity, especially at the kinds of brightness required for exterior use. However, RGB primary red and magenta could work if LU were willing to compromise on their line branding a bit.
And at least if my smartphone is any indication, LCDs still aren't ready for any application where they have to be seen in direct sunlight.
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Post by countryman on Jun 14, 2017 8:38:43 GMT
A bit late here, but I suspect that LED lights aren't quite ready yet when it comes to reproducing Met line maroon or H&C pink with any fidelity, especially at the kinds of brightness required for exterior use. However, RGB primary red and magenta could work if LU were willing to compromise on their line branding a bit. And at least if my smartphone is any indication, LCDs still aren't ready for any application where they have to be seen in direct sunlight. I have seen multicoloured destination displays on buses somewhere on the continent, but at present I can't remember where. So the technology is available to do it in sunlight, but I don't know what the technology is! |
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rincew1nd
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21009/010
Jun 14, 2017 9:33:23 GMT
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Post by rincew1nd on Jun 14, 2017 9:33:23 GMT
Sheffield Trams have them.
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cso
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Post by cso on Jun 14, 2017 11:31:04 GMT
Sheffield Trams have much bigger displays than the S-Stock though... but they do show Purple, Blue and Yellow.
I was always amused by taking a tram to Halfway...
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Post by djlynch on Jun 14, 2017 14:39:34 GMT
The newer New York rolling stock have multicoloured in-car LED displays that look like they're about the same size and "pixel" density as the S stock's single-colour exterior displays. The ones there can only show red, yellow, or green but I suspect that the technology has come far enough in the 20 years since those were designed to make blue possible.
My previous point is that I'm yet to see them do anything other than the basic colours (and white) you get by mixing red, green, and blue in equal parts, which I suspect would be a bigger issue for the branding department than the passengers who want to be able to quickly identify whether the train they see is the one they want to get on.
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21009/010
Jun 14, 2017 17:33:06 GMT
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Post by Deleted on Jun 14, 2017 17:33:06 GMT
It's not true white you get from a LED they do have a blue tinge to them and it's very noticeable when they are in clusters
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Post by countryman on Jun 14, 2017 18:16:11 GMT
It's not true white you get from a LED they do have a blue tinge to them and it's very noticeable when they are in clusters Not necessarily. Most car Daylight Running Lights are LED and are pure white without a blue tinge. |
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rincew1nd
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Post by rincew1nd on Jun 14, 2017 18:53:09 GMT
It's not true white you get from a LED they do have a blue tinge to them and it's very noticeable when they are in clusters Not necessarily. Most car Daylight Running Lights are LED and are pure white without a blue tinge. I think it depends on how closely you look. At the risk of sounding like Father Ted, I think they are very very very light blue.  |
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Post by suncloud on Jun 15, 2017 8:40:54 GMT
There are definitely LED arrays that will be capable of making a near-perfect match for nearly any colour. Metropolitan Maroon would be one of the more challenging Underground colours to match.
LED arrays as used in higher end entertainment fixtures can have up to 7 or 8 different colours of emitters to enable them to make this range of saturated colours without compromising 'tints'. These arrays are fairly expensive and power hungry (i.e 150-200w Max Power) Cheaper RGB LED sources/arrays don't normally light evenly and as observed can tend towards blue.
You can get White LED sources which can be warmer or cooler, i.e. to roughly match incandescent, or fluorescent or daylight/HMI light sources (although won't change colour temperature when fading as an incandescent lamp would). So whether one source is 'white' or 'very very very light blue' depends on what your perspective on what white light is...
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