Train GraphicClick on the map to explore geographics
 
I need help
FAQ
Emergency
About .
Travel & transport from BBC stories as at 10:35 06 May 2024
- Starliner: Nasa to fly new craft to space station
- Train strikes: How May's disruption affects you
- Families' station safety plea as third woman hit
- Eurotunnel says no queues with new travel system
Read about the forum [here].
Register [here] - it's free.
What do I gain from registering? [here]
 18/05/24 - BRTA Westbury
22/05/24 - WWRUG / TransWilts update
02/06/24 - Summer Timetable starts
17/08/24 - Bus to Imber

On this day
6th May (2005)
DfT / SRA future service level discussion (*)

Train RunningCancelled
07:10 Penzance to London Paddington
08:35 Plymouth to London Paddington
09:18 London Paddington to Cardiff Central
11:32 London Paddington to Cheltenham Spa
11:50 Cardiff Central to London Paddington
11:52 London Paddington to Hereford
12:35 London Paddington to Exeter St Davids
13:50 London Paddington to Great Malvern
13:59 Cheltenham Spa to London Paddington
14:01 Severn Beach to Bristol Temple Meads
14:19 Westbury to Swindon
15:04 Bristol Temple Meads to Filton Abbey Wood
15:14 Swindon to Westbury
15:18 Hereford to London Paddington
15:42 Exeter St Davids to London Paddington
15:51 Filton Abbey Wood to Bristol Temple Meads
16:32 Great Malvern to London Paddington
19:33 London Paddington to Worcester Shrub Hill
19:47 Bristol Temple Meads to Frome
20:58 Frome to Westbury
21:16 Westbury to Swindon
21:28 Weymouth to Westbury
21:33 Westbury to Salisbury
21:35 Maidenhead to Marlow
22:02 Marlow to Maidenhead
22:28 London Paddington to Bristol Temple Meads
22:30 Swindon to Westbury
22:35 Maidenhead to Marlow
23:03 Marlow to Maidenhead
23:33 Reading to Gatwick Airport
23:50 Maidenhead to Marlow
07/05/24 00:17 Marlow to Maidenhead
07/05/24 04:45 Redhill to Gatwick Airport
07/05/24 05:11 Gatwick Airport to Reading
Short Run
07:33 Weymouth to Gloucester
08:15 Penzance to London Paddington
08:23 Southampton Central to Bristol Temple Meads
09:59 Cardiff Central to Taunton
10:41 Cardiff Central to London Paddington
10:52 Plymouth to Cardiff Central
11:10 Gloucester to Weymouth
12:10 Weston-Super-Mare to Severn Beach
13:11 Taunton to Cardiff Central
13:32 London Paddington to Cheltenham Spa
15:38 Bristol Temple Meads to Worcester Shrub Hill
15:59 Cheltenham Spa to London Paddington
16:58 London Paddington to Great Malvern
17:10 Gloucester to Weymouth
17:38 Bristol Temple Meads to Worcester Foregate Street
17:50 Gloucester to Salisbury
17:50 Penzance to London Paddington
17:55 Worcester Shrub Hill to Bristol Temple Meads
18:29 Warminster to Bristol Temple Meads
18:53 Worcester Foregate Street to Bristol Temple Meads
19:45 Great Malvern to London Paddington
19:50 Worcester Foregate Street to Bristol Temple Meads
20:06 Westbury to Cheltenham Spa
20:11 Salisbury to Bristol Temple Meads
21:00 Bristol Temple Meads to Worcester Shrub Hill
21:31 London Paddington to Cheltenham Spa
21:53 London Paddington to Worcester Shrub Hill
22:11 Salisbury to Bristol Temple Meads
23:42 Swindon to Cheltenham Spa
Delayed
05:40 Penzance to Cardiff Central
etc
PollsThere are no open or recent polls
Abbreviation pageAcronymns and abbreviations
Stn ComparatorStation Comparator
Rail newsNews Now - live rail news feed
Site Style 1 2 3 4
Next departures • Bristol Temple MeadsBath SpaChippenhamSwindonDidcot ParkwayReadingLondon PaddingtonMelksham
Exeter St DavidsTauntonWestburyTrowbridgeBristol ParkwayCardiff CentralOxfordCheltenham SpaBirmingham New Street
May 06, 2024, 10:37:59 *
Welcome, Guest. Please login or register.

Login with username, password and session length
Forgotten your username or password? - get a reminder
Most recently liked subjects
[219] Okehampton-Tavistock. Discussion on reopening and potential us...
[157] Server load - 5th May 2024
[72] New station at Ashley Down, Bristol
[62] Champion to Westbury
[32] OTD - 6 May 1994 Euro Tunnel official opening
[23] Problems with the Night Riviera sleeper - December 2014 onward...
 
News: A forum for passengers ... with input from rail professionals welcomed too
 
   Home   Help Search Calendar Login Register  
Pages: 1 2 3 [4]
  Print  
Author Topic: Marlow line electrification  (Read 38299 times)
IndustryInsider
Data Manager
Hero Member
******
Posts: 10125


View Profile
« Reply #45 on: June 20, 2016, 10:12:45 »

The Thames would also get in the way of any new formation.  Certainly not worth the cost of modifications just to electrify it.  If a cheap way of squeezing a 3-car 60m EMU (Electric Multiple Unit) can't be found then best to keep it as a diesel route until (if ever) the line through to High Wycombe gets reinstated.

If a business case can be built for an all-day half hourly service using two units then electrify to Bourne End and run the Donkey as a diesel service connecting at Bourne End into the electric.  That's a big 'if' though.
Logged

To view my GWML (Great Western Main Line) Electrification cab video 'before and after' video comparison, as well as other videos of the new layout at Reading and 'before and after' comparisons of the Cotswold Line Redoubling scheme, see: http://www.dailymotion.com/user/IndustryInsider/
Noggin
Hero Member
*****
Posts: 519


View Profile
« Reply #46 on: June 20, 2016, 10:34:05 »

A four car unit cannot get onto the Bourne End to Marlow branch via platform 1, the distance from points to buffers is too short.   

The problem isn't really difficulty in electrifying the route, it is that there are no suitably short EMUs (Electric Multiple Unit) that can fit the existing track layout, and a bespoke rolling stock solution is highly unlikely.   

If there was a short AC EMU, then they'd surely electrify.  An AC/battery EMU possibly couldn't fit all the equipment needed in a short train, so doesn't help.

So it is easier to carry on with short DMUs (Diesel Multiple Unit), and kick the rolling stock problem into the long grass.

Paul

Thanks, thought that might be the case.

I seem to recall someone mentioning a problem with electrifying Bourne End in that it would restrict the local sailing club's access to the river, aluminium masts and 25kV electrification not being particularly safe in close confinement. I believe that one of the members was a prominent QC who reckoned they had enough historical paperwork to make NR» (Network Rail - home page)'s life very difficult indeed. 
Logged
Electric train
Transport Scholar
Hero Member
******
Posts: 4364


The future is 25000 Volts AC 750V DC has its place


View Profile
« Reply #47 on: June 21, 2016, 07:16:23 »


I seem to recall someone mentioning a problem with electrifying Bourne End in that it would restrict the local sailing club's access to the river, aluminium masts and 25kV electrification not being particularly safe in close confinement. I believe that one of the members was a prominent QC who reckoned they had enough historical paperwork to make NR» (Network Rail - home page)'s life very difficult indeed. 

Errrrrrrrrrrrrrrr how!!!! 

QC's might understand the Law of the land and sail a dinghy but it would seem they do not have any understanding of the laws of Physics or Electrical Engineering.

Good grief if their dinghy masts and sails got that close to the live OLE (Overhead Line Equipment, more often "OHLE") it would be struck by a train not to mention have sliced a gouge into the steel work of the bridge.

And these guys are supposed to be intelligent!  its more to do with being a NIMBY
Logged

Starship just experienced what we call a rapid unscheduled disassembly, or a RUD, during ascent,”
grahame
Administrator
Hero Member
*****
Posts: 40875



View Profile WWW Email
« Reply #48 on: June 21, 2016, 08:18:20 »


I seem to recall someone mentioning a problem with electrifying Bourne End in that it would restrict the local sailing club's access to the river, aluminium masts and 25kV electrification not being particularly safe in close confinement. I believe that one of the members was a prominent QC who reckoned they had enough historical paperwork to make NR» (Network Rail - home page)'s life very difficult indeed. 

Errrrrrrrrrrrrrrr how!!!! 

QC's might understand the Law of the land and sail a dinghy but it would seem they do not have any understanding of the laws of Physics or Electrical Engineering.

Good grief if their dinghy masts and sails got that close to the live OLE (Overhead Line Equipment, more often "OHLE") it would be struck by a train not to mention have sliced a gouge into the steel work of the bridge.

And these guys are supposed to be intelligent!  its more to do with being a NIMBY

I suspect that a concern might be towing sailing boats over the level crossing(s) when there isn't a train around.

Of course, level crossing are frowned upon these days, so if the objectors would care to finance the elevation of the railway along that stretch, with the crossings turned into under bridges, the risk of a mast catching the 25kV would be pretty well eliminated - and indeed the crossing would be safer, and open at all times rather than inconsiderately blocked when "The Electric Donkey" passes.

Please note tongue in cheek as I suggested this!
Logged

Coffee Shop Admin, Acting Chair of Melksham Rail User Group, Option 24/7 Melksham Rep
Electric train
Transport Scholar
Hero Member
******
Posts: 4364


The future is 25000 Volts AC 750V DC has its place


View Profile
« Reply #49 on: June 21, 2016, 15:08:00 »


I seem to recall someone mentioning a problem with electrifying Bourne End in that it would restrict the local sailing club's access to the river, aluminium masts and 25kV electrification not being particularly safe in close confinement. I believe that one of the members was a prominent QC who reckoned they had enough historical paperwork to make NR» (Network Rail - home page)'s life very difficult indeed. 

Errrrrrrrrrrrrrrr how!!!! 

QC's might understand the Law of the land and sail a dinghy but it would seem they do not have any understanding of the laws of Physics or Electrical Engineering.

Good grief if their dinghy masts and sails got that close to the live OLE (Overhead Line Equipment, more often "OHLE") it would be struck by a train not to mention have sliced a gouge into the steel work of the bridge.

And these guys are supposed to be intelligent!  its more to do with being a NIMBY

I suspect that a concern might be towing sailing boats over the level crossing(s) when there isn't a train around.

Of course, level crossing are frowned upon these days, so if the objectors would care to finance the elevation of the railway along that stretch, with the crossings turned into under bridges, the risk of a mast catching the 25kV would be pretty well eliminated - and indeed the crossing would be safer, and open at all times rather than inconsiderately blocked when "The Electric Donkey" passes.

Please note tongue in cheek as I suggested this!

Unstep the mast is the simple answer any good seaman is capable of doing that most basic of tasks
Logged

Starship just experienced what we call a rapid unscheduled disassembly, or a RUD, during ascent,”
Noggin
Hero Member
*****
Posts: 519


View Profile
« Reply #50 on: June 21, 2016, 15:56:01 »


I seem to recall someone mentioning a problem with electrifying Bourne End in that it would restrict the local sailing club's access to the river, aluminium masts and 25kV electrification not being particularly safe in close confinement. I believe that one of the members was a prominent QC who reckoned they had enough historical paperwork to make NR» (Network Rail - home page)'s life very difficult indeed. 

Errrrrrrrrrrrrrrr how!!!! 

QC's might understand the Law of the land and sail a dinghy but it would seem they do not have any understanding of the laws of Physics or Electrical Engineering.

Good grief if their dinghy masts and sails got that close to the live OLE (Overhead Line Equipment, more often "OHLE") it would be struck by a train not to mention have sliced a gouge into the steel work of the bridge.

And these guys are supposed to be intelligent!  its more to do with being a NIMBY

I suspect that a concern might be towing sailing boats over the level crossing(s) when there isn't a train around.

Of course, level crossing are frowned upon these days, so if the objectors would care to finance the elevation of the railway along that stretch, with the crossings turned into under bridges, the risk of a mast catching the 25kV would be pretty well eliminated - and indeed the crossing would be safer, and open at all times rather than inconsiderately blocked when "The Electric Donkey" passes.

Please note tongue in cheek as I suggested this!

Yes, sorry, I should have been clearer, level crossing and storage of boats in the narrow strip between the railway and the riverbank was the cause for concern, not the river crossing. 
Logged
stuving
Transport Scholar
Hero Member
******
Posts: 7173


View Profile
« Reply #51 on: June 21, 2016, 16:44:26 »

Yes, sorry, I should have been clearer, level crossing and storage of boats in the narrow strip between the railway and the riverbank was the cause for concern, not the river crossing. 

Plus, of course, that's on the Marlow branch properly so-called - it wouldn't affect electrifying to Bourne End.
Logged
dviner
Full Member
***
Posts: 82


View Profile
« Reply #52 on: June 21, 2016, 19:37:25 »

...with the crossings turned into under bridges, the risk of a mast catching the 25kV would be pretty well eliminated - and indeed the crossing would be safer, and open at all times rather than inconsiderately blocked when "The Electric Donkey" passes.

If the Bourne End > Marlow level crossings were replaced with under bridges, they'd require submarines during the winter...

 Wink
Logged
grahame
Administrator
Hero Member
*****
Posts: 40875



View Profile WWW Email
« Reply #53 on: June 21, 2016, 20:32:15 »

...with the crossings turned into under bridges, the risk of a mast catching the 25kV would be pretty well eliminated - and indeed the crossing would be safer, and open at all times rather than inconsiderately blocked when "The Electric Donkey" passes.

If the Bourne End > Marlow level crossings were replaced with under bridges, they'd require submarines during the winter...

 Wink

Hmmm ... I meant the road going under the rails.  "under" for a road user = "over" for the train.
Logged

Coffee Shop Admin, Acting Chair of Melksham Rail User Group, Option 24/7 Melksham Rep
stuving
Transport Scholar
Hero Member
******
Posts: 7173


View Profile
« Reply #54 on: June 21, 2016, 20:35:54 »

Hmmm ... I meant the road going under the rails.  "under" for a road user = "over" for the train.

Exactly - they'd be road-going submarines.
Logged
Chris from Nailsea
Administrator
Hero Member
*****
Posts: 17905


I am not railway staff


View Profile Email
« Reply #55 on: June 22, 2016, 01:41:21 »

... as distinct from canal-going submarines (from the Daily Mail):



 Wink Cheesy Grin


Logged

William Huskisson MP (Member of Parliament) was the first person to be killed by a train while crossing the tracks, in 1830.  Many more have died in the same way since then.  Don't take a chance: stop, look, listen.

"Level crossings are safe, unless they are used in an unsafe manner."  Discuss.
Do you have something you would like to add to this thread, or would you like to raise a new question at the Coffee Shop? Please [register] (it is free) if you have not done so before, or login (at the top of this page) if you already have an account - we would love to read what you have to say!

You can find out more about how this forum works [here] - that will link you to a copy of the forum agreement that you can read before you join, and tell you very much more about how we operate. We are an independent forum, provided and run by customers of Great Western Railway, for customers of Great Western Railway and we welcome railway professionals as members too, in either a personal or official capacity. Views expressed in posts are not necessarily the views of the operators of the forum.

As well as posting messages onto existing threads, and starting new subjects, members can communicate with each other through personal messages if they wish. And once members have made a certain number of posts, they will automatically be admitted to the "frequent posters club", where subjects not-for-public-domain are discussed; anything from the occasional rant to meetups we may be having ...

 
Pages: 1 2 3 [4]
  Print  
 
Jump to:  

Powered by MySQL Powered by PHP Powered by SMF 1.1.2 | SMF © 2006-2007, Simple Machines LLC Valid XHTML 1.0! Valid CSS!
This forum is provided by customers of Great Western Railway (formerly First Great Western), and the views expressed are those of the individual posters concerned. Visit www.gwr.com for the official Great Western Railway website. Please contact the administrators of this site if you feel that the content provided by one of our posters contravenes our posting rules (email link to report). Forum hosted by Well House Consultants

Jump to top of pageJump to Forum Home Page