Titan Posted January 21, 2018 Share Posted January 21, 2018 I am of the opinion that for any problem there is an optimal solution that is the best compromise that the laws of physics will allow. Once you have that solution then it is going to be extremely difficult to improve upon it no matter how hard you try. The HST is one good example of that. The original mini is another. 2 Link to post Share on other sites More sharing options...
david.hill64 Posted January 21, 2018 Share Posted January 21, 2018 I am of the opinion that for any problem there is an optimal solution that is the best compromise that the laws of physics will allow. Once you have that solution then it is going to be extremely difficult to improve upon it no matter how hard you try. The HST is one good example of that. The original mini is another. Totally agree, but then you need to understand that there are laws of physics that control what is possible. 1 Link to post Share on other sites More sharing options...
Zomboid Posted January 21, 2018 Share Posted January 21, 2018 More interesting was the less than sparkling running, with a clear road, east of Didcot where there was a boost from the overhead. Passing Didcot on time to 10 seconds early into Reading with a downhill run was not exactly sparkling while the performance downhill east of Steventon was slower overall than the HST going uphill this morning! (the HST gained 4 minutes on P-P times in a similar distance over which the Class 800 gained only half a minute). It was on time and maintained that. I'm not sure that's grounds for criticism - only people in the cab will know if the driver was giving it everything. 2 Link to post Share on other sites More sharing options...
RMweb Gold The Stationmaster Posted January 21, 2018 RMweb Gold Share Posted January 21, 2018 It was on time and maintained that. I'm not sure that's grounds for criticism - only people in the cab will know if the driver was giving it everything. The noise it was making (not massive I'll grant you) and the way it was going made it pretty clear to me that the Driver was having a go, in fact he would have lost time if he hadn't. So it was what I would call 'hard running' (and that does not relate, entirely, to the ride). If it has been a similarly hard driven HST - as my experience yesterday showed - it would have made up minutes, but it didn't. Link to post Share on other sites More sharing options...
RMweb Gold RFS Posted January 21, 2018 RMweb Gold Share Posted January 21, 2018 On another topic, I saw this picture on the Railway Herald website of a class 800 easing into Worcester Shrub Hill past a fine gantry of GWR semaphores. Somewhat incongruous I thought, and it seems full-scale modernisation has some way to go yet ... http://www.railwayherald.co.uk/imagingcentre/view/499834/TW 5 Link to post Share on other sites More sharing options...
RMweb Premium Coryton Posted January 21, 2018 RMweb Premium Share Posted January 21, 2018 On another topic, I saw this picture on the Railway Herald website of a class 800 easing into Worcester Shrub Hill past a fine gantry of GWR semaphores. Somewhat incongruous I thought, and it seems full-scale modernisation has some way to go yet ... http://www.railwayherald.co.uk/imagingcentre/view/499834/TW Well, given that we have a railway where trains come straight off ERTMS onto semaphore signals, I'd say yes. 2 Link to post Share on other sites More sharing options...
St. Simon Posted January 21, 2018 Share Posted January 21, 2018 Well, given that we have a railway where trains come straight off ERTMS onto semaphore signals, I'd say yes. ERTMS is NOT fitted to any UK railways, ETCS is fitted to the Cambrian, but ETCS is not fitted anywhere on Western just yet, with only the Heathrow to Paddington being fitted in the next few years. Simon Link to post Share on other sites More sharing options...
RMweb Premium Coryton Posted January 21, 2018 RMweb Premium Share Posted January 21, 2018 ERTMS is NOT fitted to any UK railways, ETCS is fitted to the Cambrian, but ETCS is not fitted anywhere on Western just yet, with only the Heathrow to Paddington being fitted in the next few years. Interesting. It was of course the Cambrian I was referring to. There is a lot of information on the web describing the current system on the Cambrian as ERTMS, including documents by ASLEF and Arriva Trains Wales (who of course run the trains on that route). If it's a mis-nomer it's a widespread one. Link to post Share on other sites More sharing options...
St. Simon Posted January 21, 2018 Share Posted January 21, 2018 Interesting. It was of course the Cambrian I was referring to. There is a lot of information on the web describing the current system on the Cambrian as ERTMS, including documents by ASLEF and Arriva Trains Wales (who of course run the trains on that route). If it's a mis-nomer it's a widespread one. It is a very widespread mis-nomer, even those in the IRSE get it wrong! ERTMS refers to the whole system of GSM-R + ETCS + Rail Management Software in the control centre. Without this rail traffic management software, a line can't be said to be fitted with ERTMS, even if it has GSM-R and ETCS working. Network Rail has only just installed such software at Didcot, although ETCS isn't fully working yet. Simon Link to post Share on other sites More sharing options...
ess1uk Posted January 21, 2018 Share Posted January 21, 2018 And Romford ROC? It is a very widespread mis-nomer, even those in the IRSE get it wrong! ERTMS refers to the whole system of GSM-R + ETCS + Rail Management Software in the control centre. Without this rail traffic management software, a line can't be said to be fitted with ERTMS, even if it has GSM-R and ETCS working. Network Rail has only just installed such software at Didcot, although ETCS isn't fully working yet. Simon Link to post Share on other sites More sharing options...
RMweb Premium jjb1970 Posted January 21, 2018 RMweb Premium Share Posted January 21, 2018 Usually speed and acceleration is a function of power, add plenty of power and make it slippery in the aerodynamic department and it'll go fast. Add lightness for acceleration. Boost the turbo-pressure and add bigger coolers to crank that engine power up...... 2 Link to post Share on other sites More sharing options...
RMweb Gold BoD Posted January 21, 2018 RMweb Gold Share Posted January 21, 2018 On another topic, I saw this picture on the Railway Herald website of a class 800 easing into Worcester Shrub Hill past a fine gantry of GWR semaphores. Somewhat incongruous I thought, and it seems full-scale modernisation has some way to go yet ... http://www.railwayherald.co.uk/imagingcentre/view/499834/TW A thing of great beauty. The semaphores, that is. 1 Link to post Share on other sites More sharing options...
ess1uk Posted January 22, 2018 Share Posted January 22, 2018 A Gwr green 5 car IET has just passed through Peterborough station heading south. Didn’t see what number Link to post Share on other sites More sharing options...
RMweb Gold The Stationmaster Posted January 22, 2018 RMweb Gold Share Posted January 22, 2018 It is a very widespread mis-nomer, even those in the IRSE get it wrong! ERTMS refers to the whole system of GSM-R + ETCS + Rail Management Software in the control centre. Without this rail traffic management software, a line can't be said to be fitted with ERTMS, even if it has GSM-R and ETCS working. Network Rail has only just installed such software at Didcot, although ETCS isn't fully working yet. Simon Oh dear - best tell RSSB and NR because that means the Rule Book is wrong 1 Link to post Share on other sites More sharing options...
RMweb Premium Coryton Posted January 22, 2018 RMweb Premium Share Posted January 22, 2018 A Gwr green 5 car IET has just passed through Peterborough station heading south. Didn’t see what number Sounds as if it's a bit lost... Link to post Share on other sites More sharing options...
RMweb Gold 4630 Posted January 22, 2018 RMweb Gold Share Posted January 22, 2018 A Gwr green 5 car IET has just passed through Peterborough station heading south. Didn’t see what number Reported on another forum as 800028. Link to post Share on other sites More sharing options...
RMweb Premium rab Posted January 22, 2018 RMweb Premium Share Posted January 22, 2018 Sounds as if it's a bit lost... GWR - Goes Where Required 1 Link to post Share on other sites More sharing options...
Geoff Endacott Posted January 22, 2018 Share Posted January 22, 2018 It was on a delivery run to North Pole Depot. It's the highest numbered 800/0 to come south so far. Geoff Endacott 1 Link to post Share on other sites More sharing options...
royaloak Posted January 22, 2018 Share Posted January 22, 2018 It was on time and maintained that. I'm not sure that's grounds for criticism - only people in the cab will know if the driver was giving it everything. I am hearing rumours that the power handle on the 802s is going to be labelled ON and OFF and not bother with any intermediate notches because they are superfluous. Link to post Share on other sites More sharing options...
Ken.W Posted January 23, 2018 Share Posted January 23, 2018 Sounds as if it's a bit lost... Best place for them, from what I hear Link to post Share on other sites More sharing options...
jamesg Posted January 23, 2018 Share Posted January 23, 2018 GWR - Goes Where Required Or 'Great Way Round'. 800008 was on the Cotswold line yesterday, though another diagram which I expected to be 800 operated turned out to be a HST, so it looks as though they're interchangeable with HSTs to some extent at the moment. 1P29 Worcester Foregate Street to London Paddington was operated by 43187 and 43174; it was 800006 on Friday. Link to post Share on other sites More sharing options...
RMweb Gold 4630 Posted January 24, 2018 RMweb Gold Share Posted January 24, 2018 Test running of IETs into Leeds commenced on 23rd January 2018, with a second run on 24th January. Here is GWR liveried 800003 Queen Victoria leading sister 800004 Isambard Kingdom Brunel into Leeds with 5X61, 14.55 Doncaster IEP Depot to Leeds on 24th January. Both sets later departed as 5X62, 15.54 Leeds to London Kings Cross. 5 Link to post Share on other sites More sharing options...
RMweb Premium jjb1970 Posted January 24, 2018 RMweb Premium Share Posted January 24, 2018 I am hearing rumours that the power handle on the 802s is going to be labelled ON and OFF and not bother with any intermediate notches because they are superfluous. Funnily enough that'd match some analysis of engine load profiles I've seen for locomotive engines. Link to post Share on other sites More sharing options...
DavidB Posted January 24, 2018 Share Posted January 24, 2018 I am hearing rumours that the power handle on the 802s is going to be labelled ON and OFF and not bother with any intermediate notches because they are superfluous. Which is of course exactly the same binary driving that caused the radiator issues with the HSTs in the mid-80s, with coolant top-ups required en route in high summer. What goes around, comes around. Link to post Share on other sites More sharing options...
caradoc Posted January 24, 2018 Share Posted January 24, 2018 Test running of IETs into Leeds commenced on 23rd January 2018, with a second run on 24th January. Here is GWR liveried 800003 Queen Victoria leading sister 800004 Isambard Kingdom Brunel into Leeds with 5X61, 14.55 Doncaster IEP Depot to Leeds on 24th January. 800003 Leeds 24012018 - DSCF1696 RMWeb.jpg 800003 Leeds 24012018 - DSCF1701 RMWeb.jpg Both sets later departed as 5X62, 15.54 Leeds to London Kings Cross. That's a kind of reminder of the days when the Western Region's named 47s sometimes ended up a long way from home ! 3 Link to post Share on other sites More sharing options...
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