Train GraphicClick on the map to explore geographics
 
I need help
FAQ
Emergency
About
Waterloo Campaign
Travel & transport from BBC stories as at 23:55 18 Aug 2022
- Owami Davies: Missing nurse could be dazed and confused on trains
* Covid pass app working again, says NHS Digital, after disruption
- Ambulance pressures: Thousands of taxis sent following 999 calls
- First Native American woman to travel to space
- Train strikes: Passengers face disruption as rail services hit
Read about the forum [here].
Register [here] - it's free.
What do I gain from registering? [here]
 tomorrow - Imber bus day
15/09/22 - RailFuture conference, Leeds
22/09/22 - World Car Free Day
21/10/22 - TWSW General Meeting

On this day
19th Aug (1970)
Merehead Rail Terminal opened (*)

Train RunningNo cancellations or delays
PollsOpen and recent polls
Open to 22/08 05:23 What is suppressing your train use?
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
August 19, 2022, 12:09:56 am *
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
[257] Charging a higher fare because you're diverting trains - is th...
[102] Insurance and registration for cyclists?
[60] Realtime Trains sneaks through the Channel Tunnel?
[46] RMT strike action Summer 2022
[41] The last bus from Melksham to Bath
[27] E-Scooters and parks
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 36580 times)
IndustryInsider
Data Manager
Hero Member
******
Posts: 9339


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

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: 412


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

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: 3814


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


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


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

Neither a wise man nor a brave man lies down on the tracks of history to wait for the train of the future to run over him.     
Dwight D. Eisenhower
grahame
Administrator
Hero Member
*****
Posts: 36661



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


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, Vice Chair of Melksham Rail User Group, and on the board of TravelWatch SouthWest.
Electric train
Transport Scholar
Hero Member
******
Posts: 3814


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


View Profile
« Reply #49 on: June 21, 2016, 03:08:00 pm »


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

Neither a wise man nor a brave man lies down on the tracks of history to wait for the train of the future to run over him.     
Dwight D. Eisenhower
Noggin
Hero Member
*****
Posts: 412


View Profile
« Reply #50 on: June 21, 2016, 03:56:01 pm »


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: 6381


View Profile
« Reply #51 on: June 21, 2016, 04:44:26 pm »

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, 07:37:25 pm »

...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: 36661



View Profile WWW Email
« Reply #53 on: June 21, 2016, 08:32:15 pm »

...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, Vice Chair of Melksham Rail User Group, and on the board of TravelWatch SouthWest.
stuving
Transport Scholar
Hero Member
******
Posts: 6381


View Profile
« Reply #54 on: June 21, 2016, 08:35:54 pm »

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: 17836


I am not railway staff


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

... 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 a customer 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). Forum hosted by Well House Consultants

Jump to top of pageJump to Forum Home Page