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Grovenor

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  1. Grovenor
    I would put 1 and 7 on the same lever, they form a crossover between the up and down. Other than that You are there I think. Crossover 4 and point 8 could be arranged with 8 as part of the crosover but its Hobson's choice really as either version could give the larger collision risk depending on the traffic pattern.
  2. Grovenor
    Are we talking 4mm or 2mm? I thought Peter was asking about 2mm, but Ben's looks like 4mm to me. I have a 4mm one part built but it comes without the gate operating mechanism which I have found basic drawings that show it but have yet to build. IMHO a significant omission.
  3. Grovenor
    Its the availability of that top speed that spurs on the racers, the topic here is not the majority of accidents its the street racing idiots.
  4. Grovenor
    Yes, but the top speed of cars could be regulated and enforced, at least to some degree. There is no way to regulate the IQ of potential drivers.
  5. Grovenor
    Y'all do your best now to discourage people from visiting. It's still going to be a good show and worth a visit.
  6. Grovenor
    Since this museum exhibit relates to the Israel/Palestine railways then the UK conventions on signal arm placement may not be relevant anyway. Railways with predominently single line and crossing loops tended to do what suited them.
  7. Grovenor
    See https://www.scalefour.org/forum/viewtopic.php?f=26&t=767
  8. Grovenor
    Having a lock in the tray and not connected to any bar is a common technique, but your latest version is OK too. You are not exactly short of space in this example.
  9. Grovenor
    That looks OK now.
  10. Grovenor
    Seperating is fine, but no need to duplicate, which would make demonstrating harder. Do each lock seperately then you will have 6 bars rather than the 3 possible.
  11. Grovenor
    Well, that's not how I thought I described it, but it nearly does the job. However, if you pull 3 and then pull 5, 3 should be held reverse but it isn't so can be moved back to normal.
  12. Grovenor
    Quite a bit of excess locking in that dog chart. The bottom 2 bars are fine, 1 and 4 lock 3 and 2 and 5 released by 3. So your double ended dogs for 1 locks 2 and 4 locks 5 are redundant as its already covered via 3.. The top two bars can be combined into one, giving 1 or 2 locks 4 and 5, and 4 or 5 locks 1 and 2. just 3 bars in total.
  13. Grovenor
    So, you quote half my post, contradict me with "No its not" then continue in some detail to explain why I'm correct if you read all my post. A pity we don't have a signalling plan of the area and which points were run through.
  14. Grovenor
    Sectional route release, TORR or not is a hazard in any area where shunt moves occur and thus a train/loco may reverse in section, and the route releasing should be designed with that in mind.
  15. Grovenor
    Found them, https://clarkrailworks.com/ Scrolling down the page reveals a lot of DJH kits at sale prices but it looks rather like a sell off. I didn't see any indication that they are making any more.
  16. Grovenor
    I believe that when fibreglass was used for boiler lagging it was referred to as a mattress.
  17. Grovenor
    I the whistle on that.
  18. Grovenor
    So all our attacks on the Houthi have achieved so far is an increase in the list of ships that are at risk of attack.
  19. Grovenor
    Just the sort of publicity that was needed before Rishi made his cancellation decision, a bit late now. But maybe if we get more of the same the message will get through to the next government.
  20. Grovenor
    Has the meaning of "deck" changed recently? I don't see any deck in the video just support girders.
  21. Grovenor
    Googling found this paragraph for me from an Irish railway standard, so maybe I'm 1Hz out. 🙂 It also came up with this video,
  22. Grovenor
    No, I meant 3Hz. Not sure of the frequency range now but I think it was in the region of 300 to 600Hz. £Hz spacing would need 318Hz bandwidth. The Track circuits were around the 300Hz mark and had to avoid all the harmonics of 50Hz plus or minus a bit. The tuned reeds had a very tight resonance frequency which allowed for the close channel spacing. Mostly this is from memory as I no longer have my reference material.
  23. Grovenor
    Rotate your photo in something like Microsoft Paint and save it in its new orientation, then upload that file. Its workerd for me anyway.
  24. Grovenor
    The tuned reed system was FDM, not TDM. Every one of the 106 channels required a transmitter reed unit and a reciever reed unit, I think the channels were 3Hz apart. There was also a related reed track circuit system which had a much restricted range of frequencies as it had to avoid any frequency that might be produced by a traction package working on the line.
  25. Grovenor
    The servicing yard already has land cleared for it at Euston, no need for another place. 🤨
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