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SRman

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SRman last won the day on March 14 2010

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  1. After a bit of digging, this is from a forum in the USA, someone had this useful information on setting the delay on a LokPilot: "To make units with the two different decoders" [LokSound and LokPilot] to "mu smoothly the non sound LokPilot decoder has Virtual Sound as a function on CV128. This tells the non sound unit to perform as if it was a sound decoder with sound enabled. So you must map CV128 to a function key of your choice and set a value between 0-225." He went on to say you need to set an arbitrary value initially, then adjust it until you get the result you need to match the LokSound decoder.
  2. In my case, yes. Mostly Lima Diesels / Electro-Diesels. I have heard of it being applied to wheels without the groove though, but the toothpick idea might prove too rigid, in which case, Rob's use of a brush might be a better idea to ensure a smooth and even coating.
  3. I agree with Rob. While I have only done a few locos with it, it works well (after a couple of first attempts that came out a bit lumpy). I use a toothpick to apply it, with the wheels of the loco hooked up to the power to turn them slowly. One of those aforementioned failed attempts was because I had them spinning too fast! The beauty of it is that only a very small amount of the Snot is required, and it can be easily scraped off if you aren't happy with the initial result.
  4. I was under the impression LokPilot v4 decoders have a CV that can add a delay to allow for running with a LokSound in a consist.
  5. Ahh, I see it now. I didn't recognise it in the photo, but now I know what I am looking for, it is obvious. Thanks for answering what was probably a silly question.
  6. Hi Richard. What speaker did you use and where did you mount that, please?
  7. Another small step in creating the class 123 DMU. This is the first fitting for the DMBS casting. A little trimming is still required, and the underframe will have to be drastically altered to allow the motor chassis to be fitted. P_20191112_220609_vHDR_Cropped by Jeffrey Lynn, on Flickr
  8. SRman

    Class 07 Diesel

    Adding to Mike's answer, to be fair to the 07s, they weren't the only ones to suffer hot boxes on longer trips. Their predecessors at Southampton Docks were the USA Dock Tanks (as produced in model form for Model Rail Magazine), and these also suffered hot boxes when taken on extended trips, either going to Eastleigh or on transfers to other sheds, as happened to a few later in their lives. With either type, when shunting in their 'home' territory around the dock lines, there was no problem as it was all short distance, low speed work.
  9. Hi Pete. Dd you remove the capacitors from the 31? I have a few TTS decoders in use, but I haven't investigated their abilities to alter BEMF settings. That could be worth a look. Also, there are CVs that alter the behaviour including the BEMF cutoff: CVs 150 to 154 (documented in the leaflet that comes with the decoder. Try CV 150 = 1 as a starter.
  10. If it is of any help, I received a news email from Train-Tech, and I quote a part of it here: "We are pleased to announce today that we have been developing a decoder especially for these new Dapol Servo signals which both powers them safely with a stabilised supply and controls two single arm signals or one twin head signal. It’s called the SC4, designed and made in Britain and is now available from stock priced at £40. Available to buy at the Great British Model Railway Show at the Motor Heritage Museum this weekend or Warley in two weeks time, or online from our webshop ... " I pass this on purely as I am also interested in the Dapol bracket signals, although I am awaiting the BR upper quadrant types. I have no connection with Train-Tech, other than as a satisfied customer.
  11. It's nice to see you back again. Nice work on those signals.
  12. The speaker enclosures should not be difficult to get as they are the same for 100 ohm or 4/8 ohm speakers. Many of my v3.5 fitted locos have two speakers in parallel (both sealed, of course). I agree that it is difficult to get speakers equivalent to the really good range available for the newer versions, but combinations of speakers can still improve things a bit. As an example, some of my diesels have a bass reflex or bass enhanced speaker together with a smaller round speaker (23 mm or 20 mm) to push the higher end. The main thing is not to exceed a volume of 50 (out of a possible 64 steps), otherwise you risk damaging the decoder amp. I have often found that I need less than half of that volume - around 20 to 25 - to get very reasonable results. The main snag with all of the above is that there isn't always room for larger speakers, particularly in steam locos. Some, like two of my Heljan class 33s, and a Heljan Hymek, started off with two 23 mm round speakers, one in the tanks, the other angled against the cab bulkhead at one end, with that second one having a severely cut down sound chamber to get it to fit within the body. Even that difference means the speakers behave differently and give slightly different tonal qualities that complement each other. Others, like a class 24 and a class 37 have a normal 20 x 40 mm oval speaker in the assigned space but fitted with a sealed sound chamber, plus a small 20 mm round speaker in the nose (class 37) or shoehorned into the body at the other end (class 24). As long as these decoders continue to work well, I see no reason to spend money replacing them with newer versions. Replacing the sound projects with bif's or Howes' ones is beneficial in many cases, though.
  13. Like Peter C (45568), I remember Bachmann indicating that they could do a U from the N tooling. For the variations, the first batch of U's were converted from River class 2-6-4 tank locos. These had lower running plates and deeper splashers than subsequent new builds, which had splashers so shallow they were barely visible. As such, I would guess that any manufacturer's tooling would probably not be able to deal with this variant as well as the later versions.
  14. The pickup method of transferring the power from the bogies to the PCB on the floor of the model is standard on many of Bachmann's DMUs and EMUs. If there is a problem with intermittent power, this is the most common location to investigate, in my experience. Only one model has given me cause to do something about this; a class 150 unit I fitted with sound. I ended up soldering some decoder wire between the vertical 'pins' on the bogies and the contacts on the PCB. That fixed the stuttering and intermittent losses of power for that model. I don't know why that particular unit suffered the problems more than any other with exactly the same mechanisms and power arrangements, it just did. It works perfectly now, though.
  15. I'm enjoying your build here, Chris. I have been building a 4 EPB from DC Kits but it keeps getting put on the back-burner, although the shells are built and it has couplings and a Replica Railways motorised chassis, so can, and has, run on my layout. Can I make one small suggestion, something I have done with mine: before you finally glue the roof on, taper the underside slightly to make the visible front edge slightly thinner. I always think the roof appears slightly too thick as it stands. If you have glued the roofs on already, it would still be possible to scrape the underside of the leading edge above the cab just a little. The thickness at the trailing ends doesn't matter as it matches up to the coach ends. The thought of doing all those door hinges and grab handles does my head in, which is one of the reasons I keep putting the EPB set back in its drawer!
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