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HAB

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  • Website URL
    http://www.blockpostsoftware.co.uk

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  • Location
    East Midlands
  • Interests
    P4, Signalling, Track, Southern EMUs

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  1. If you lose the injector or or suffer any other low-water situation from whatever cause - and there are many - and drop a plug, you need the rake and the clinker shovel, you need them fast and you don't [email protected] about making use of them! If you hang about scratching your head and fail to get the fire out in time, the dropped crown which is likely to result will kill you, your driver and possibly many others. THAT is the reason such things are always carried!! Trick question - how many "Ducheses" suffered a dropped firebox crown? Answer - there were three incidents of
  2. Interesting development! Could you put a vernier on the gauge and tell us what it measures please? I would be interested to know the shrinkage allowance needed. Based on this piece, how long do you reckon it would take to print (say) a metre's worth of chairs and sleepers? Good luck! Best Wishes, Howard
  3. "A pictorial Record of Southern Signals" by the late George Pryer, (OPC) has scale drawings of Drayton on page 116 and Bedhampton (strictly a "Brighton" design) on page 115. As far as I am aware, the kit you refer to was based on the former. The drawings were done by my good friend Graham Bowring from on-site measurements. Although long out of print, copies are often available on-line. Hope that helps, Howard.
  4. Absolutely nothing to do with DCC, nor the train detection, nor anything else to do with the layout itself - it is purely the control logic for the Electric Locks on the lever frame. There have been earlier posts explaining how the DCC is set-up and wired. the 25-way connectors illustrated are the means of interfacing the various elements together using 25-way cables (lots of them!). this enables them to be built tested and mantained on the bench. Cheers.
  5. Hello Dave, Well, all it does is provide the control logic for the Electric Locks on the lever frame. All the functionality that we think the Midland and the Ell of a Mess Railways provided (such as Rotary and Controlled Block instruments, interlocking to Leeds West SB, Track Circuit locks) are provided. But we have added a few extra controls beyond that. The main reason is that the Midland and LMS employed highly intellegent, well trained, and highly experienced signalmen. We employ ... average Model Railways Operators and - lets just say - they (that is "we") need all the help
  6. Here is one I did about quarter of a century years ago:- Same spec apart from the DCC stuff. I think mine was the very first to be built from the kit as I discovered an error in the design of the equalising beams and Martin was horrified when I told him about it. But he was very quick to get out a fix. I also discovered that the Mainline 57xx body fits the chassis perfectly - including the little cutouts for the tightlock couplings fixings! So for a while, I think I was running the only Mainline pannier with working inside motion! The kit went togethe
  7. We will be at Railex, Aylesbury, next year - which counts as "West" for the likes of us lot! Beyond that, we are booked up until the end of 2021 and all the events are more to the north. PS, not sure about a headboard, but we will try to display a notice in Colin's memory.
  8. Just to mention that Colin's 4-SUB will be at the Epsom Exhibition this weekend on my Minories layout - details here:- https://www.epsom-ewell.gov.uk/visitors/whats-on/event/epsom-model-railway-show-2019 Look forward to seeing RMwebbers there!
  9. Just to mention that Minories will be appearing at the Epsom Exhibition this weekend - details here:- https://www.epsom-ewell.gov.uk/visitors/whats-on/event/epsom-model-railway-show-2019 Look forward to seeing RMwebbers there!
  10. When I first saw this photo, I assumed (given that the auxilliary switch panel has no locking) that the Laird had casually pulled off a random selection of signals simply to demonstrate the working of the LEDs on the repeater panel. I should however, have known better, and I now see that he has carefully selected the maximum possible number of parallel movements as follows:- - North Arrival to Platform 2 (signal 37, could also have had distants 34,35) - South Arrival to Platform 4 (signals 3,8 could also have had distants 1,2) - North Departure, Shunt to Pla
  11. Just a couple of further photos of progress on the electric locks. Here is the current pile of work in progress:- Here is one showing the mechanical assembly only to illustrate how alternate locks "point" upwards or downwards to achieve 10mm pitch to enable adjacent levers to be locked. This job was quite a design challenge because of the number of constraints (size, robustness, ease of assembly, availability of suitable off the shelf bits, maintainability etc) but most of all becuase they need to be pretty well 100% dependable - if a lock can
  12. Hello Dave, I think you are too kind! I have a golden rule in this as in all modelling - just copy what the real thing did because the people who really understood this stuff have solved every possible problem years ago. There are a few challenges in this particular job but mostly it comes down to lots and lots of quite simple bits - the challenge being to be efficient enough in the use of space to fit it all in. If there is any clever bit in what I have done, then it lies in the design of the etches and, truth to tell, I was a bit surprised at just how well they worked. Ev
  13. Personally, I would build the layout first!! There is more detail on page 36, but here is a copy of one of those photos showing the test frame:- The locks are made using custom-designed etches, home-made PCBs and utilise standard Omron power relays, slightly over-voltaged to provide the umph. They come in various varieties to give the different kinds of lock we need. (combinations of Normal, Reverse, and "Backlock" positions). It has to be said that providing an electrically operated physical lock on levers as small as these (10mm pitch) is by no means easy - part
  14. Excellent photo from the Laird! I think your track is a lot better alingned than the real thing would have been! Not sure the locking would be any easier for a mimic Mike and of course, it is the locking, not the frame which adds the value:- we already have a bank of unlocked switches as you can see in the photo, and they are pretty hard work especialy when the Timetable/Control are putting you under a lot of pressure to run four trains at once! To me, the 'lectrical stuff on these mechanical frames is the most difficult bit - here is the first stage for the Wellington
  15. Hello Ian, Almost all of the points had economical FPLs, however, lever 11 is indeed an FPL (on crossover 9) and was probably necessary as 9 has three facing "ends". We discussed if the lever should stand (ie lock) Normal or Reversed - different railways used different practices and some railways changed their standard from time to time. On the Midland, standing Normal seems to have been the general (but perhaps not exclusive) practice. However, in this case - being the only FPL in the frame - and given that we do not know what the reality was, we had to think about it. There i
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