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Edwin_m

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Everything posted by Edwin_m

  1. Doesn't look like anything more than an 08 would be able to shunt around. Do they plan to derail it on those traps then practice putting it back on again? I'm not convinced that buffer stop is set up correctly. Shouldn't the running rails should continue back alongside the two inner rails, because the stop slides along all four if hit by a train. Otherwise the retardation will reduce as it falls off the end of the running rails, the opposite of what is wanted.
  2. If you are using all the function wires already then there is no need to change any CVs apart from the ones you need to make your functions operate on the right buttons. Simply add the resistor in parallel with, or instead of, whatever is between the blue wire and any of the function wires, whichever is easiest to get at. However you have to remove the resistor when you finish programming and put it back if you ever want to program again. Also do not leave the function with the resistor turned on for more than a second or so or the resistor will overheat. I think the FL2 decoder mentioned by BromsMods has a special circuit to avoid this problem. However it also only has two functions.
  3. Worth looking at Zimo for a quality decoder. They can be found a little cheaper than the Lenz equivalents, have more features and most importantly offer excellent motor control with little need to adjust CVs.
  4. The ones I have seen are similar to Gareth's pic of Newark - white line at the edge as usual, tactiles immediately behind the platform edging and sometimes a yellow line behind the tactiles. Distance from the tactiles to the platform edge depends on the size of the edging slabs.
  5. It should work if you connect the 100 ohm resistor between the blue wire and one of the function wires you aren't using for the lights. Either remove it when you finish or, if you want to leave it in place, you need to change the CVs so that function wire is NEVER activated.
  6. Limpley Stoke I think, pretty much midway between Bathampton and Avoncliff. In which case I'll revise my first guess to be the gated crossing a few hundred metres towards Bath, where the wotsit valley Titfield line used to come in. Sorry getting late and my brain is closing down, nearly typed Bradley Stoke there!
  7. It is most likely that you are having the problem described in the thread on the DCC questions forum here about the Farish 150. Sorry I can't link to this at present as the link button appears to be more than this primitive mobile connection can cope with! Ignore any solutions relating to the motor circuit as the FL4 doesn't have one.
  8. I think it would make the layout a lot more interesting if you could extend the double track part into the hidden area so your station becomes a place where a double track becomes single and you can hide a train on the hidden part of the double track. As you have it now, if you put two trains on the loop then one must always be waiting in the station while the other goes round. With a hidden double track a train can wait out of sight instead, which is much more like the real situation with a station of this type - most of the time there will be no train there at all! I would also not try to bend the platforms round into the curved section. You have enough platform for a 3-car train on the straight bit, which is as long as you can fit in the hidden sidings. With the radius you have to use there will be a huge gap between the train and the curved platform.
  9. In Germany you probably find nobody can understand the announcement until they get to the important verb at the end...
  10. I decided that as the blobs would be about 0.5mm apart I'd just go with a plastic strip and paint it beige. But then again I'm not a very good modeller...
  11. How about pulling the wardrobe out a couple of inches and putting a single track tunnel behind it?
  12. Lots more info and pics of what is left here. Incidentally the Cross-River Tram, proposed over the years but most recently canned by Boris, would have run on the surface along Kingsway. I've always thought it was a shame that the London Transport Museum couldn't somehow incorporate probably the two largest pieces of disused underground infrastructure, Kingsway Tunnel and the Aldwych branch, both of which are a stone's throw from Covent Garden.
  13. Shiver me timbers, he's obscured that milepost. Pure guess: somewhere near Avoncliff?
  14. I've noticed there is a signalbox of some sort, in fact when I saw it this time I was able to impress my son by telling him we were about to go into a tunnel! As you say you don't get a good look at it, especially not from "the cushions", and I'd just assumed it was the former Wickwar signalbox retained for some obscure railway purpose or sold off.
  15. 00 gauge controllers will work for N gauge, however you may find that the lowest possible speed with the controller is a bit fast on an N gauge loco. N gauge controllers tend to have a bit more resistance so they are better suited to a motor that draws less current. A lot of people use settrack for their very tight curves and flexitrack for the rest, because as Kris has said it is often difficult to keep a constant radius on flexitrack. On more gentle curves this doesn't matter. Farish recommend 12" minimum radius for several of their locos, though I'm not sure about the 170. I'd suggest you stretch to 12" minimum if you can. The Farish 170 is a smooth and quiet runner, however it doesn't have lights or close coupling and the chassis fills all of one of the coaches so it is not possible to model the interior. The Farish 150 and Dapol 156 just launched are much better models than the 170 or the 158 (but the 156 is also much more expensive and hard to find). There are threads on both these units in the "old" RMWeb forum.
  16. Yes that all sounds right to me.
  17. Good stuff Michael, I seem to recall the trains were pretty rare when we reviewed it, which is why we had to ask NR for details rather than organising ourselves a field trip. There are river bridges at both ends of the terminal so extending it in either direction would be difficult. Otherwise they would probably have built it longer in the first place! But, as you have noticed, this space constraint makes it smaller and more operaitionally interesting for the modeller.
  18. My information comes from someone in the local Network Rail freight team. I think he did say that the freight could shunt back on the up main as you have seen. But if an up train was due it would have to go across to wait in Claydon loop - but it would then propel back from there to Barham. I agree that it would run round at Claydon to return north after leaving Barham. This was part of an investigation into remodelling the yard to include a run-round precisely to reduce the length of time the freight train blocks the main lines. I'm not involved in this any more but I doubt it will happen because it would need at least one new river bridge and taking a lot of land, and as the freight train is once a day maximum you would only gain a handful of main line paths. According to the Quail it is 45 chains from Claydon crossing (south of south end of loop) to Barham crossover/ground frame, I make this to be 2970'. I don't have access to the plans but it's clear from the aerial photography that the distance between the north end of Claydon loop and the turnout access to Barham is about the same as the length of the loop itself. So the propelling distance is less than twice that if the train had stopped on the up main.
  19. I use RR&Co without having any point detection, though I haven't run it enough to tell whether it is reliable. You may be able to do something clever with combining detection for a whole route's worth of points into a single RS16 input and then somehow use this in the route proving in RR&Co.
  20. Birmingham-Bristol line speed upgrades perchance? I travelled that way this week too, with my son on the way to and from my parents in Wiltshire. He commented on how rocky the cutting was after Wickwar, and we looked out at the sharp curve at Westerleigh so I'm kicking myself for not getting that one!
  21. I'm not familiar with the LS150 but I'm pretty sure that the RS16 doesn't have similar flexibility in setting its address. To make use of it I think you will need to renumber all the turnouts you want to detect to be in a single block of eight, ending with a multiple of four (eg 1-8 or 25-32), and with no other turnouts numbered within the same block of 8. You then take the address of the fourth turnout in the block, divide it by 4, and this is the address to put into the RS8 (1 or 7 in my examples above). If you use a separate microswitch then you should be fine if you wire up as per the diagrams in the RS16 manual or in the separate circuits leaflet also on the LDT website. I found that using normal 50Hz AC in the detection circuit wouldn't work - I think the detector is picks up each AC cycle as a change of state and therefore clogs up the RS bus with event reports. DCC current is supposed to work but I ended up using smoothed DC. I'm not surprised the RS16 won't work from the LS150 outputs, as I believe the LS150 is powered off AC so probably supplies AC or unsmoothed DC to the point motor. Also if you were to detect the outputs of the LS150 you would only be proving that the decoder has operated - the microswitch also confirms that the point has moved across.
  22. The train arrives from the north into the Down Goods Loop then propels back across both mains into the terminal. I believe the train must then be split due to the length of the sidings within the terminal. When unloading is complete it crosses back to the Down Goods Loop and runs round via the Down Main before departing northwards.
  23. A couple of extra points. If you use the 100 ohm resistor option, beware that 12 volts across 100 ohms is dissipating 1.44 watts. Most resistors are rated at 0.25 watts, so you either need a high power resistor or to make sure that 12 volts is not put across it for any length of time. Sometimes the easiest way is to remove the resistor when programming is complete. However if you leave it in place, if it is on the motor circuit make sure that the maximum speed CV is set to zero so the motor circuit is never used in normal running. You can do the same trick with a spare function wire on a function-only decoder but you need to change the function mapping so no function can accidentally activate that wire. In either case the resistor will still be used during programming, but only for very short periods so there shouldn't be enough heat build-up to cause a problem. On the subject of the Bachmann 6-pin decoder it has been reported on another forum that these don't work in DC mode.
  24. I've programmed and used a RS-16 for detecting track occupancy via a Lenz LB101 but haven't used it for point detection. Hence my understanding may not be complete but I believe the following to be true. You need to understand that each accessory decoder has a decoder address similar to that of a loco decoder. This is NOT the same number as the turnout number used to operate a turnout via the handset! Each address has eight bits, and for a turnout decoder these are normal and reverse for four consecutive turnouts. For my Lenz system, turnout decoder number 1 controls turnouts 1 to 4, number 2 controls 5 to 8 and so on. A further complication is that some DCC systems count from zero rather than one, which changes the above numbering, and I believe the Lenz can be reconfigured to do this. If you have changed this setting then the numbering I suggest here will also change (and I'm not sure how). The RS-16 is given an address on the RS bus by pressing its push switch and throwing the turnout with the number the same as the desired RS bus address. As above, unless the number is 1 it is not the number of any of the turnouts that you wish to feed back through that module! The first eight inputs of the RS16 will then be the eight bits of the address it is given and the rest will be the eight bits of the address one more than the start address. Hence if you hit the RS16 button then F-7-65 on the LH100 you will be setting the RS16 to addresses 65 and 66 and F-6-65 will look at the first eight inputs. You should see a letter "b" on the display - if you just get the number and a dash then the LH100 can't see the device on the RS bus so it is either not connected or hasn't programmed. If this is OK and you pass a current between one of the first eight terminals and the common on the RS-16 then the bit number you just operated should appear on the handset. From your post it sounds as if you have got this far. F-6-66 should then display the other eight bits. 65 and 66 are just examples here, you can use any number up to 127 I think. Lenz reserves module addresses 1 to 63 for turnout feedback and addresses from 65 upwards for general purpose feedback. As I understand it, if a feedback device has the same module address as a turnout decoder, then the system assumes that it is providing feedback for the four turnouts connected to that decoder. Hence if you program your RS16 to address 1 it will provide feedback for the first and second turnout decoders, which should be turnouts 1 to 8. This is the part I haven't tried myself, so I suggest you experiment rather than taking my post as gospel! I think this rather inflexible arrangement is all you are allowed - each RS16 can only detect eight consecutively-numbered turnouts, and if a RS16 is set up in this way then any of these eight that are actually used must be wired back to the same RS16 for feedback.
  25. Your original layout looks fine for modern era (by which I assume you mean 1980s Cambridge power box!). At that time any concerns with facing points had disappeared, but pointwork was put on the straight where possible and used simple combinations of standard components. If traffic departs the way it came in then a run-round is needed, either within the yard or using the loop and the main line. The latter would obviously block the main line for a certain period so might not be allowed. Barham north of Ipswich shows yet another arrangement of loop and freight terminal, though rather constrained by the site.
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