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  1. LMS2968 liked Jamessquared's post in the thread Mallard's maximum speed.

    But required power doesn't scale linearly with speed - all else being equal, increasing speed by 125% (say 100mph to 125mph) requires considerably more than 125% more power. That's not quite true, is it? Whatever publicity value accrued, my...

    Jul 19, 2018 at 4:11 PM
  2. LMS2968 liked S.A.C. Martin's post in the thread Tornado.

    I note that Steam Railway have published an edited version of my original response (for which I am grateful for the opportunity to air my views). I note that David Ward has responded to Graeme Bunker - again. I am considering my response and...

    Jul 19, 2018 at 4:10 PM
  3. John Merry replied to the thread LE Movements, ECS and Test Runs 2018.

    Times on for BIL visit to wensleydale http://www.realtimetrains.co.uk/train/O22003/2018/07/20/advanced

    Jul 19, 2018 at 4:08 PM
  4. Kinghambranch liked Andy B's post in the thread Bodmin and Wenford General Discussion.

    Regarding 4270 (just returned to service this week after 9 months out for repairs) we find that the worst hunting starts once you’re up to line speed and then because we’re a flat line you’re on that point of needing very little regulator and so...

    Jul 19, 2018 at 4:07 PM
  5. Kinghambranch attached a file to the thread GWR Siphon G No 2983.

    The restoration of Siphon G No 2983 proceeds apace and is now almost complete. There are a few remaining jobs to undertake (including painting wheels and one bogie) and, with a vehicle like this which will remain outside and static for long...

    20180526-1-Siphon G Winchcombe.JPG 20180526-2- Siphon G Winchcombe.JPG Jul 19, 2018 at 4:04 PM
  6. 35B liked Jamessquared's post in the thread Mallard's maximum speed.

    But required power doesn't scale linearly with speed - all else being equal, increasing speed by 125% (say 100mph to 125mph) requires considerably more than 125% more power. That's not quite true, is it? Whatever publicity value accrued, my...

    Jul 19, 2018 at 3:57 PM
  7. NevilleKing liked Andy B's post in the thread Bodmin and Wenford General Discussion.

    Regarding 4270 (just returned to service this week after 9 months out for repairs) we find that the worst hunting starts once you’re up to line speed and then because we’re a flat line you’re on that point of needing very little regulator and so...

    Jul 19, 2018 at 3:57 PM
  8. Smokestack Lightning liked Spamcan81's post in the thread Mallard's maximum speed.

    That’s a bit like saying 500 mph in level flight for a piston powered aircraft is no great shakes because an SR-71 can do Mach 3, when in fact 500 for piston power is very good indeed for the technology involved. It’s comparing apples with oranges.

    Jul 19, 2018 at 3:48 PM
  9. oddsocks liked Spamcan81's post in the thread Mallard's maximum speed.

    I note that some of those who choose to denigrate Mallard's achievement and question the speed achieved have readily accepted CoT's speed record and are equally happy to accept 120+ for GWR light engine test runs. Double standards methinks....

    Jul 19, 2018 at 3:45 PM
  10. andalfi1 liked Jamessquared's post in the thread Mallard's maximum speed.

    But required power doesn't scale linearly with speed - all else being equal, increasing speed by 125% (say 100mph to 125mph) requires considerably more than 125% more power. That's not quite true, is it? Whatever publicity value accrued, my...

    Jul 19, 2018 at 3:43 PM
  11. Jamessquared replied to the thread Mallard's maximum speed.

    But required power doesn't scale linearly with speed - all else being equal, increasing speed by 125% (say 100mph to 125mph) requires considerably more than 125% more power. That's not quite true, is it? Whatever publicity value accrued, my...

    Jul 19, 2018 at 3:39 PM
  12. Gladiator 5076 replied to the thread Cathedrals Express/Steam Dreams to Poole 21/07/18.

    Do we assume this has a diesel behind the A4 and one on the rear as well? Which I guess will also occur for the DCE next week.

    Jul 19, 2018 at 3:39 PM
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