1992 tube stock unit 91331 was spotted by a YouTuber with new internal modifications, running on test, but no motor traction changes as of yet. It was seen departing Tottenham Court Road.
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1992 stock Refurbishment?
- Thread starter c2c
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TT-ONR-NRN
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I wonder how real this is?
Because this unit (with PIS) sounds normal.
Not my video. Credit to the owner.
Dstock7080
Established Member
The trial interior fitted trains are not yet fitted with AC motors, the AC motor fitted trains don’t yet have the trial interior.
These will be married together in the next stage.
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py_megapixel
Established Member
It doesn't like it has much of an interior at all at the moment, what with half the panels and seats missing!
Dstock7080
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they need to test that the modifications actually work before refitting the panels and seats.
I bet punters still wanted to board
ScottGallagher
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Has a specific Barman moquette design been done for the central line refurbishment, the Piccadilly/Jubilee blue version never did sit well in the 92 stock against the red and grey interior.
Nym
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No doubt it will be, need to keep all the graphic designers in work while the rest of the workforce are out on their backside with pay cuts and conditions loss.
Goldfish62
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The Piccadilly line version isn't the standard version. It's quite a bit different.
I look forward to seeing the Central line version, although I'm not a Barman moquette fan.
Are those the same displays on the Northern 95 + Jubilee 96 units? Surprised they haven't gone for full screens like on Overground 710s.
Seen worse interiors in revenue service on Southeastern
They look like the ones from the 2009 stock (which also use the digital version of the TfL font)
There is a global semiconductor shortage. The integrated circuits that drive LCD panels are a lot more intricate and can be manufactured at a lot fewer locations, compared to older, simpler technology that can drive an LED matrix.
Mikey C
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Would the bigger screens, as with the 710s, fit a tube train anyway?
py_megapixel
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They're present in the mockup videos for the new Piccadilly Line stock. Central line trains have absolutely enormous windows, so covering a bit of the window would be no real issue and as someone mentioned a few posts back would probably be an advantage as it would keep it cooler in the summer!
357
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What's the power consumption difference between LED and LCD? I seem to remember they only found the extra power for these screens by converting the internal lighting to LED.
The light source in modern LCD panels is LED, so no great difference.
Older LCD panels used cold-cathode tubes (like flourescent strip lighting) which consumed more power, but still not nearly as much as incandescent bulbs.
Always figured they'd just do a Picadilly and take over one of the advertising poster spaces.
Nym
Established Member
Actually is quite a big difference in driving an LCD screen compared with a dot matrix indicator. It's not just the backlight that's the issue.
321over360
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Will be interesting to see a full complete train in due course, although not as clear to tell from the video, will the central line fleet have external viewable displays to show the destination of the train like on the 2009 and S Stock trains?
Dstock7080
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The displays aren’t double-sided, so no
321over360
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That's a shame
Dstock7080
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indeed and the rear
Railperf
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Is there still a plan to allow these to run at 100kph once remotored? I can't remember if new bogies were also required.
Dstock7080
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100kph is not in the current plan, new bogies are not being provided.
Once line voltage has increased to 750vDC and regenerative braking fully implemented then things may progress.
Railperf
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what are the planned timescales - if any - for that?
Dstock7080
Established Member
+500/-250 as on sub-surface