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Class 172 pics
23:18, 14 February 2010:Report | Quote
40 in blue not LL
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I see there are now pics of 172's floating around the web.

These are the London Overground ones, and they look like a 170 (ooh there's a surprise) except they have gasket style windows instead of bonded, and obviously different bogies and transmission.

Not exactly riviting stuff but still better than the rancid old tat 150's that northern will no doubt get.

Oh and seat trim, I think somebody needs to tell London Overground thats its 2010 not 1975.


Number of edits: 3. Last edit: 23:30, 14 February 2010
13:23, 16 February 2010:Report | Quote
d.river
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yeah, the orange and brown trim/seating is terrible. we had all that in the early 80s on some london buses, district and jubille line stock.

who gets paid for this tat!



14:33, 16 February 2010:Report | Quote
XC_RPI
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Here's a link to the photo's i've for the benefit of those who have yet to see them http://rtranmer.fotopic.net/c1814556.html
15:16, 16 February 2010:Report | Quote
Paul Scott
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Originally posted by d.river:
yeah, the orange and brown trim/seating is terrible. we had all that in the early 80s on some london buses, district and jubille line stock.

who gets paid for this tat!



Probably the same guy who decided to put it in the 378s. I don't see why it is being discussed as though it's come as a surprise, it's the same style already in use on LO...

Paul
19:28, 16 February 2010:Report | Quote
craigie
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Quite ironic that you add to the discussion really
19:57, 16 February 2010:Report | Quote
40 in blue not LL
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As someone who was around to experience the complete shambles of regional railways in the late 80's with the railbus self changing gears saga and the doors on the 155's, lets hope these new gearboxes work.




Number of edits: 1. Last edit: 19:58, 16 February 2010
21:06, 13 April 2010:Report | Quote
Class 170
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http://londonreconnections.blogspot.com/2010/02/in-pictures-new-overground-class-172s.html
and
http://www.old-dalby.com/present.htm
These are all personal opinions
09:39, 15 June 2010:Report | Quote
wymondham
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For those who are interested her are a few "facts" about the 172's. This information is from a reliable source.
London Overground will have 8 two car units. Chiltern will have 4 two car units. Chiltern units will be 172101, 172102, 172103 & 172104.
All will be fitted with a Euro III MTU engine and ZF Ecomat gearbox, together with the B5005 series bogie (similar to class 220). Because of this bogie theywill not be able to operate on LUL lines as a tripcock beam cannot be fitted to this bogie.
20:15, 15 June 2010:Report | Quote
3141
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Chiltern units will be 172101, 172102, 172103 & 172104.
All will be fitted with a Euro III MTU engine and ZF Ecomat gearbox, together with the B5005 series bogie (similar to class 220). Because of this bogie theywill not be able to operate on LUL lines as a tripcock beam cannot be fitted to this bogie.


Assuming that the Chiltern units will be able to work in multiple with other Chiltern stock, could their 172s operate over LUL lines if the leading unit was was a 165 or a 168?
21:36, 15 June 2010:Report | Quote
Class 170
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Yes It said this was possible.
These are all personal opinions
14:59, 17 June 2010:Report | Quote
wymondham
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LUL will apparently only allow the Chiltern 172's over their lines if they are "boxed in", in case they have to turn back.
16:36, 23 June 2010:Report | Quote
Nikolas S Andersen
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As someone who was around to experience the complete shambles of regional railways in the late 80's with the railbus self changing gears saga and the doors on the 155's, lets hope these new gearboxes work.

Sad they got such a bad reputation here. From experience I can tell you that the ZF Ecomat 5-speed boxes work(ed) well in the DSB IC3 ("Flexliner") and ALSTOM LINT. And the acceleration felt a lot better than the hydraulics and was less noisy.

It was also used in the Siemens Regiosprinter and continental Desiro + Bombardier Talent. I wouldn't be too worried - the issues should be ironed out after over 20 years of service!
-------------
Try the IC3
02:48, 24 June 2010:Report | Quote
EddyHarris
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Looks like Chiltern will not be running the 172s anytime soon.

I hear from an internal source that the recent trials are a massive failure. This, I am told is due to Chiltern choosing a smaller (read as cheaper) engine for the new units and as a result they are underpowered for the task and unable to keep up with the stop start timetable they will be required to run, or even make full speed.

Also, there is the whole issue of the Met and Tripcocks.
08:55, 24 June 2010:Report | Quote
Paul Scott
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Originally posted by EddyHarris:
Looks like Chiltern will not be running the 172s anytime soon.

I hear from an internal source that the recent trials are a massive failure. This, I am told is due to Chiltern choosing a smaller (read as cheaper) engine for the new units and as a result they are underpowered for the task and unable to keep up with the stop start timetable they will be required to run, or even make full speed.

Also, there is the whole issue of the Met and Tripcocks.


There are problems with exhaust back pressure because the exhaust is split to run round the outside of the bogies, it is going to have to be re-routed through the passenger saloon 'like on 222s' according to Modern Railways. It isn't because 'Chiltern chose a low power engine', the problem applies to the whole class irrespective of TOC, but in LO's case, they are a low speed route so they may be able to introduce them pending modification.

Tripcocks won't normally be an issue as the trains are not planned to be used on the Met, they are for the main line stoppers in the Evergreen 3 timetable.

Paul
09:25, 26 June 2010:Report | Quote
Mark B!
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Epic Fail there....
10:08, 13 July 2010:Report | Quote
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According to a friend who works at LOROL the 172's for both LOROL and Chiltern had the wrong gearbox specified - the model fitted will not handle the maximum torque from the engine, so the engine has had to be "turned down".
Latest rumour from Chiltern is that they have cancelled their part of the 172 order anyway.
11:15, 13 July 2010:Report | Quote
Paul Scott
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So Chiltern will be ordering a completely new class of DMU to provide their requirement for 8 vehicles?

Yeah, that's a distinct possibility...

I reckon it's nothing more than an agreed delay.

Paul
09:03, 15 July 2010:Report | Quote
wymondham
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Or even maybe more class 67 hauled Mk3's?
12:02, 15 July 2010:Report | Quote
EddyHarris
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I hear it will be more 67s.
15:20, 15 July 2010:Report | Quote
Paul Scott
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There are two services going over to 67+Mk3+DVT in Dec 2010, an early Banbury to Marylebone and evening return, according to a new Track Access Application. This is specifically so that a single 165 or 168 can be released in sequence for GSMR fitting.

The 'Evergreen 3' mainline improvements appear to be delayed until May 2011, so there is plenty of time to rework the 172s, which aren't needed until that timetable starts.

Paul
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