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  1. Railperf

    Ex-LNER Mk4 sets for Grand Central (Blackpool - Euston)

    With a regular load of ten MK3's , The 90 is only around 15 seconds quicker from rest to seven miles than a 91 with its ten MK4's! Add extra -another minute minimum - if it is raining A 390 is almost a minute and a half quicker than the 90!
  2. Railperf

    Ex-LNER Mk4 sets for Grand Central (Blackpool - Euston)

    Lets put that into context. A Class 90 with a shorter load will accelerate faster than a Class 90 on load 10, but a Class 390 is no slouch either. So how much faster the short loco hauled set will accelerate to a given speed (in the dry) - may only give it a few seconds advantage to 100/110mph...
  3. Railperf

    EMU power distribution (inter-car connections)

    Does anyone know the power supply arrangement for Italian Railways ETR500. These are similar to TGV in that they have a 4,400kW power car at each end of the train. On certain lines I.E Diretissima - In DC mode, both power car pantographs are raised. On other DC lines, they seem to run on DC with...
  4. Railperf

    LHCS Mk3 disposals

    I think i saw 12098 and 12021 as part of a five car rake standing at Norwich Station sidings today. The other three coaches were a buffet and two firsts.
  5. Railperf

    Differences Between Various Sprinters Acceleration

    Isn't the Eversholt graph based on the 195 being in super power mode which is not often used by drivers?
  6. Railperf

    Class 801s emergency power pack

    What is the capacity of the fuel tank on an 801?
  7. Railperf

    Class 801s emergency power pack

    I would imagine any speed specified must be the minimum achievable. But i'm sure more than 45mph would be attainable downhill with a favourable tailwind.
  8. Railperf

    Question about Class 158 and Class 170

    Nope, not even missing the loco hauled stock either - apart from some visual variety. But those wanting a 158 and 156 fix can still travel on EMR 158s and 156s between Norwich Ely and Peterboro. As well as XC 170s between Stansted, Ely and Peterboro.
  9. Railperf

    GWR operating short 'HSTGTi' sets (see diagrams section for workings)

    Now that all the sets have been delivered, what is the planned service pattern - frequency. There seems to be two main diagrams. penzance to Plymouth and Newton Abbot, and Cardiff to Taunton. Certainly the Cardiff to Taunton was run by a mix of stock. IS it planned to join this up and run...
  10. Railperf

    Differences Between Various Sprinters Acceleration

    HST's hitting the bank at Bromsgrove doing 80mph are often doing around 60mph at the top of the 1 in 37.5 at Blackwell. The Voyager logs from around 2012/2013 show speeds of around 70mph being achievable at Blackwell - the days when higher engine outputs were the norm. From Blackwell, the...
  11. Railperf

    Question about Class 158 and Class 170

    They were comfy but underpowered. The 385's provide the performance such a service requires.
  12. Railperf

    Question about Class 158 and Class 170

    Only of real benefit where the line speed is continuously 100mph. if I recall correctly, Hull Trains 170's were averaging almost 90mph on some stretches because they could maintain 100mph for long distances. However, on routes with lower and mixed speeds, the 158's performance doesn't put them...
  13. Railperf

    GWR operating short 'HSTGTi' sets (see diagrams section for workings)

    Double the power acceleration wise - HST 2+4 offers apps 13.1hp/t at the rail versus 7.4 hp/t for a Class 158 (350hp version). Does not halve journey times though! Saves around 40 seconds to 1 minute on each station to station section - based on comparing 2+4 with Class 158 on the Aberdeen to...
  14. Railperf

    Differences Between Various Sprinters Acceleration

    That seems to be in line with our findings. But as each set can differ in regards to engine health - the majority of recordings suggest average engine outputs per set in the region of 535 to 545hp - meaning one or more engines might not be pushing out their full bhp. The figures I have for late...
  15. Railperf

    Differences Between Various Sprinters Acceleration

    I presume that trials were carried out - to determine if wear and tear could be reduced and reduce fuel consumption at a power setting that would still allow the timetable to be maintained - especially as 125mph running on MML had been introduced by then. And some of those 125mph sections are...
  16. Railperf

    Differences Between Various Sprinters Acceleration

    Starting from Acle eastbound - reasonably level there - 0 to 60mph in 158 seconds!!
  17. Railperf

    Differences Between Various Sprinters Acceleration

    Since between spring and summer 2015 it is understood the engine management chip was remapped to lower power levels. Our recordings of Class 222 performance over the period show a marked reduction on power from appx 560 hp +/- 8 to 10 hp at the rail to a current level of apps 540hp +/- 8 to...
  18. Railperf

    Greater Anglia Bombardier Aventras (Class 720): Technical discussion and introduction

    I would have though that the bulk of reliability issues on the Aventura platform have been identified and fixed on the 345/710 fleet, and therefore the 720's should almost be able to run out of the box - unless the fact that they have been sitting around for some time means certain mods have not...
  19. Railperf

    Differences Between Various Sprinters Acceleration

    Interested to note that a 2+6 HST formation has the closest power to weight ratio to a Class 222. The HST is apps 10,5hp/t at the rail compared to between 10.56 and 10.8 for a 222. The 222's seem to deliver appx 525 to 540 rail hp per engine. A 2+5 HST is much higher at 11.6 hp/t and the 2+4's...
  20. Railperf

    Differences Between Various Sprinters Acceleration

    Yes, the 153 i sampled between Norwich and Great Yarmouth -packed like Sardines on a sunny Saturday last May - was dreadfully slow, but it did have fair amount of extra weight to carry that day - having been drafted in to substitute for a missing 755/4.

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