Of course yeah, should have really said they'll only be able to go to Aylesbury via High Wycombe.
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Class 172
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route:oxford
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Technically, can't they also get to Aylesbury via Oxford with a reversal at Calvert?
MCR247
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It looks like a normal 170 with no contour lines and the yellow goes too far back
route:oxford
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Yikes, should have put a warning on your post before submitting that link...
The seat material is very 70s. Not something to embrace after a late night. Hope that it's just bare bones material and the livery is for testing by Network Rail/RoSCo prior to full production.
The Planner
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The planned Evergreen 3 diagrams only have them on the journeys Ive said.
Helvellyn
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No, that's LOROL's seating pattern, and is being used on the Class 378s as well. The colours are reversed to highlight the priority seats.
Drsatan
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But unlike the 378s at least they have a proper seating layout (transverse 2+2 seats, as opposed to the longitudinal seating of the 378s), so fewer passengers will have to stand...
On the other hand, I'd have thought TfL would have specified longitudinal seating given that the 378s have them, or maybe TfL didn't have much control over the specification for the 172s.
On the other hand, I'd have thought TfL would have specified longitudinal seating given that the 378s have them, or maybe TfL didn't have much control over the specification for the 172s.
They'll do the job. Biggest change to 170s/171s I can see is the windows. They've gone kind of Siemens! The old Turbo/Electrostar stock had four down the centre, and they weren't as high as these ones. These new windows look almost square!
Voyager 2093
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Bring on the 172s wonder when the Chiltern Variants will start construction.
alex57601
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The windows also look like the ones that will be used on the NXEA Class 379s if the mock-up drawings from last year is anything to go by.
As for the livery and seating moquette, you will all find that this is LOROL-spec livery and moquette (as per the Class 378s), so the photos of the 172s provided in this thread are for LOROL.
dk1
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Suppose it matches the 378 style.
royaloak
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Are the 172s for Chiltern going to have Dellner or BSI couplings, it would make sense for them to have BSI as it would maintain the standard within their fleet.
route:oxford
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So if a 165 were attached to a 172, would it be acceptable to run on the joint lines?
Would the 165 have to be the lead vehicle?
Daimler
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Are the 168s tripcock-fitted, then?
MCR247
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Yeah, I think
--- old post above --- --- new post below ---
What would happen at Aylesbury when the set returns?
--- old post above --- --- new post below ---
What would happen at Aylesbury when the set returns?
Daimler
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route:oxford
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I imagine the lead vehicle would be taken off, run-around and re-attached.
Voyager 2093
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I think the 172s will have Tripcocks fitted, it makes sense to have them fitted don't believe what wikipedia says. Look at the 168s they weren't intended for use on the Aylesbury Line via Harrow they were built for the London to Birmingham/Kidderminster services and vice versa but they were fitted with Tripcocks just in case they needed to be used on the Aylesbury Line via Harrow and now there is at least one 168 diagram a day on the Aylesbury Line via Harrow. Or standing in for a failed 165 which has happened in the past.
But we never know until its officially confirmed.
But we never know until its officially confirmed.
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The Planner
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All the freight weaves itself between the bubble car on the Princes Risborough to Aylesbury section.
RPM
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Yes, 168s are tripcock fitted, as is the water jet unit 960301.
The rumour doing the rounds at Aylesbury is that the 172s can't be tripcock fitted because the lightwieght bogie design doesn't have anywhere the tripcock could be mounted on.
In theory there's no reason a 172 couldn't work over the Met provided it was coupled to a leading 165 or 168 but I doubt it will happen very often.
Access to Aylesbury Depot can be achieved via Princes Risborough, the same way the Wrexham sets use to get there now.
The rumour doing the rounds at Aylesbury is that the 172s can't be tripcock fitted because the lightwieght bogie design doesn't have anywhere the tripcock could be mounted on.
In theory there's no reason a 172 couldn't work over the Met provided it was coupled to a leading 165 or 168 but I doubt it will happen very often.
Access to Aylesbury Depot can be achieved via Princes Risborough, the same way the Wrexham sets use to get there now.
The reasoning behind them having standard seating would most likely be that (in the grand scheme of things) the units aren't intended to be on the GOBLIN for too long.
If any proposed/planned/pie in the sky electrification infill on the line happens, they can just be given back to the ROSCO and cascaded.
If they had the interior of the 378, it could limit there future deployment.
Crossforth
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Excuse my ignorance but what is a tripcock?
ailsa
Member
It's a device fitted to the train that applies the brakes if it hits a raised 'treadle' on the track. The treadle is fitted at signals, and raised at red, on London Underground lines.
asylumxl
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Edit: Nevermind guy below posted it in better English.
As I understand it, a tripcock is a device used by London Underground to stop trains passing signals at danger. It is a plate that it struck by a raised peice of metal when a signal is passed at danger. The piece of metal is held up by a spring, and held down by the force from a motor when it is safe to pass.
If you need more certainty or more specifics, there is at least one LU apprentice on here and I think a couple of LU drivers.
If you need more certainty or more specifics, there is at least one LU apprentice on here and I think a couple of LU drivers.
90019
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Source?
You got a source for that? It goes against everything we know about them.
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