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Geordie Exile

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Posts posted by Geordie Exile

  1. 16 hours ago, Mallard60022 said:

    I used Mains Copper wiring for my Power BUS 24 x 10 roundy roundy with some 4 track parts and a set of 7 storage sidings. One NCE supply with no booster and it can handle two running Loco's and a few others sat in various places. I  use a DC BUS for my Point Motor Power but they are all linked to the Track as are Two 6 inlet Frog Juicers.

    No issues with power drop.

    Phil

     

    14 hours ago, Donw said:

    Voltage drop per amp per metre

     

    1 sq mm   44mV

    1.5 sqmm 29mV

    2.5 sq mm 18mv

     

    with a feed in the middle you would have no more than 5metres from the source  so at 1A 1.5mm cable 145mV however  a 2mm loco is more likely to be drawing 0.25A   so even if two locos running the draw would only be 0.5A

     

    So i would suggest a voltage drop of say 75mV out of 12v would be negligeable . In fact the voltage may be less that that most of the time so say the loco is running on 7.5 volts ambling along 75mV  is a 1% drop between the middle where it gets full power and the extremes where it gets the 1% drop. Would you notice a 1% drop in speed?

     

    Don

     

     

    12 hours ago, bécasse said:

    You already have convincing replies on the voltage drop (or, more realistically, effective lack of resistance drop) on your proposed circular layout, but it might be worth adding one final statistic. The resistance of 1,5mm2 copper wire is all of 11,5 ohms per kilometre.

     

    10 hours ago, Compound2632 said:

     

    Again, giving a voltage drop of 14 mV over 5 m at 0.25A .

     

    Fantastic, thank you all.  I'll drop this off my list of things that concern me, and go back to worrying about turnout operation, frog juicing, track bed composition, automatic decoupling etc etc etc 😁

     

    Richard

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  2. I'm blessed with a loft that will allow me a circular layout some 7.0m x 5.5m (ish).  The thought of a DMU trundling endlessly around a loop while I play with a specific bit of the layout pleases me no end.  However, does a loop of 25m mean that the resistance of the rails, or the 1.5mm cable I'm planning to use as a bus, will reduce the current so much that at the furthest point from the DC controller the said DMU will simply grind to a halt?  I know that DCC will give me a higher voltage, but I'm trying to avoid the expense and complexities of DCC.

  3. I'd ordered a bunch of track for Fenwick Pit, so knew I had to get on with my contribution to the FCAG's layout, namely a couple of huts.  The first is a scratch-built brick hut: other members suggested that the warm glow of a stove would enhance it (it was snowing, a lot, while I was building it) so, yeah, OK.

     

    image.png.6cdc42213eb68b9b53ecafba7bd9c511.png

    Oof, that downpipe's a bit chunky.  Never mind.

     

    The second is a grounded wagon, courtesy of Shop 2 (2-580) but bashed about a bit:

    image.png.2e4809b139185783a1377dd77665d4b7.pngimage.png.af579d056b746f6c48b7f5348bfe2e58.png

     

    And my track arrived today, so it's time to get serious with actually building my own layout.  (Hmm, I think I've said that more than once...)

     

     

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  4. I'm mulling over how best to combine a lever for wire-in-tube turnout operation with a polarity switch for the frog. Before I reinvent the wheel, does such a thing already exist somewhere, or does someone have a working design they'd be willing to share?

     

    Cheers, Richard.

  5. 1 hour ago, Caley Jim said:

    Hi Richard.  My  reading of the map is that the red rectangle was the exchange sidings as they lead off the (dashed) line to East Holywell.  The ones in the blue rectangle come of the (solid black) line marked as 'Mineral railway'.  Also, there are not enough of the latter to be practicable as exchange sidings.  Loaded wagons have to be brought from the pit by the colliery loco and parked to be collected by the main line loco.  at the same time empties have to be left and collected.  This needs a number of sidings which were usually parallel.  Either that or all exchange took place at East Holywell.

     

    No harm in a bit of compression.  My exchange sidings are designed around 575mm long trains (roughly 13 wagons and a van) which, along with 125mm for the loco, are the longest my cassettes can take.

     

    Jim

    Hi Jim

     

    You're probably right, and I've a couple of photos which seem to confirm it.  I've also photos (early '70s) which seem to show the blue area as more populated by sidings than the (mid '60s) map shows.  Doesn't really matter, as - to quote a great modeller - "It's your model, so make it how you want it" 😁

     

    R

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  6. Eek.  Just done some measuring (that 200m scale on the map is useful) and it turns out that the length of track I'd planned on replicating is about 2000ft which would be 4m just for the exchange sidings with a nice approach from the east and that "Y" at the west.  Think I'll be compressing that somewhat.

  7. Well then!  I found my modelling mojo: it was buried under a long list of things to do in real life, but as most of those are outdoor jobs and it's currently -7 in our part of the Highlands, they can wait. 

     

    I've ordered a bunch of 9mm (how appropriate!) ply and planed timber to make a start on elements of the baseboard.  I promised myself I wouldn't get too complicated for the first attempt, and this was confirmed when I blew the dust off my two-year-old test track and saw just how badly I'd laid it.  So, here's the plan for the first bit:

    image.png.7b0917e74f73a6fb09f25d9869bf7156.png

    (probably copyright National Library of Scotland, so I'd better credit them)

     

    The pit itself sits at the top of the map (the orange rectangle), but I'm going to start with the exchange sidings.  I'm pretty certain they sat in the blue rectangle, and weren't much more complex than is shown in the map.  However, the red rectangle gives me a set of sidings, lots of straight lines, some fairly simple pointwork, a nice headshunt and the possibility of a couple of non-descript and out-of-commission buildings , so in my version those will become the exchange sidings.  The lines originally served Church Pit ("Mine (Dis)" on the map), later the Abbey Shot Factory (which used the pit shaft as the drop rather than a shot tower) and then, well, I don't know after that.  I could have it all wrong and they actually were the exchange sidings.

     

    It'll all be good practice, as it'll feature actual track and scenery, plus wiring, plus (semi-)automatic uncoupling.  Time for a shopping list...

     

     

    • Like 1
  8. 2 hours ago, tom s said:

    20240110_130521.jpg?ex=65b10b29&is=659e9

    The top of the assembly is angled so just pulling it down by the sideframes will unclip it from the chassis, and nothing is hardwired between the two

    Thanks, Tom. I guess the design has changed since (my version of) Getting Started was published. I'll give that approach a go.

     

    Update: @tom s It worked! It took quite a terrifying amount of tugging to remove the bogies, but I've got my first 2mmFS loco going backwards and forwards on my (appallingly laid) test track. Thank you! R.

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  9. Hi All

     

    I'm making my first attempt to re-wheel a loco, having bought a brand new Farish Class 24.  The instructions in the Association's "Getting Started..." handbook are pretty clear, but I've fallen at the first hurdle.  I think I've found the clip on the cosmetic bogie frame, but no amount of pressure and twisting seems to be budging it.  

     

    image.png.3257f5be4eebb50704bf87d31cf4c96b.png

     

    As you can see, I'm already starting to chew this up.  I'm pressing it in the direction of the red arrow, while trying to lift in the direction of the blue arrow.  Before I mess it up completely, has anyone done this recently, and advise on what I should actually be doing?

     

    Cheers, Richard.

  10. 13 hours ago, Trewisin said:

    Hi Richard firstly I hope you had a reasoable Christmas and you are now looking forward to (Hogmany)  the New Year

    Time has flown i take it that you are still in the land of hibernation as to regards  modelling.

    Look forward to hearind from you soon, best regards.Ray

    Hi Ray

     

    Thanks for the good wishes.  I've just blown the dust off my RMWeb login for the first time in months, and here's a lovely greeting from yourself 🙂.  Given the enforced idleness that the Highland weather has brought, I thought I'd dip in and make an appeal for a J94 chassis which might reignite my modelling.  Hope you're well.

     

    Richard

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  11. I don't suppose anybody's got a spare J94 chassis conversion kit they don't want?  I'm willing to pay real actual money for it.  It's been TOS from Shop 3 for forever, and I've bought all the other stuff I need.  I can't really progress my doesn't-exist-yet layout without a working loco to test turnouts etc, and my modelling mojo is withering as a result.

     

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  12. OK, shopping list revised.  I've dropped the quartering tool and will go with the quartering by hand/eye/coupling rod approach.  I'm back to the recommended crankpin options, and I've doubled the number of axle steels (three and a bit to check/keep the whole thing aligned once it's out of the jig, and a bit for the lay shaft that I'd forgotten about).

     

    I know if I'd wanted 'easy' railway modelling I'd have stuck with n-gauge, but we don't half make this complicated for ourselves.  Is it time for a "you will also need..." list on the Association website that ties in with the various chassis etches?

     

    image.png.90d24307d906475e3f191d16af533279.png

     

    All I need now is for the J94 chassis to come back into stock...

     

    Thanks as ever to the giants on whose shoulders I'm trying to stand!

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  13. Thanks, gentlemen. 

    16 hours ago, Klaus ojo said:

    You are aware that the etch 3-640 is including a jig for the assembly of the chassis? Not the kind of the 3-270 but useful.

    Take 3 of the axles  (if you don´t already have): The loco has 3 axles and the etched jig has holes for 3 as well. ;-)  Having one surplus is ot wrong.

     

    I've been watching @Nick Mitchell's fab video's on the Association website, and the 3-270 jigs seemed a useful addition once the chassis no longer fits in the etched jig.  The axles should help check alignment (a la Nick's video) rather than form any part of the model.  (At least, that's what I had thought: wheel + muff + wheel should do, shouldn't it?)

     

    18 hours ago, Izzy said:

    Seriously I'd use 3-126  0.5mm crankpins with 3-129 0.6mm washers on the front with Mk5's.

     

    15 hours ago, Nigelcliffe said:

    Use the parts designed for the wheels,

    Using the bits I'm supposed to use is definitely my preference - I'd rather end up doing as little botching as I can get away with.

     

    Revised shopping list to follow...

  14. Hi All

     

    I've searched the forum and to my surprise can't find a thread already asking these questions.  If it's just me looking but not seeing, please point me in the right direction.  If it's not all in one place, I thought a thread might be useful to other conversion beginners like me.

     

    I've found the list of things I'll need on the Association website, but have ended up with more questions than answers.  I'll go through the "Required Parts List" (found here) item-by-item with my questions/comments, and would really appreciate your help.

     

    Required Parts List

    Chassis etch

    • 3-640 (Farish Austerity/LNER J94: Etched N/S)
    • Currently TOS from Shop 3 😒

    Motor

    • 3-241 (12V Coreless: 6 x 15mm: 0.8mm shaft)

    Association frame spacer PCB

    • 3-156 (Frame Spacer: 150mm long x 6.4mm wide x 1.6mm: PCB)
    • or???
    • 3-157 (Frame Spacer: 150mm long x 7.0mm wide x 1.6mm: PCB)
    • For future reference, how will I know?

    Loco wheels (see table below)

    • 3-006 (Mk5: 8.5mm)

    6 x crankpins

    • 3-125 (Flanged: 0.5mm dia: 0.75mm Base for Mk6 and later Wheels: Turned Brass)
    • or???
    • 3-126 (Long: 0.5mm dia: Turned Brass)
    • I assume it's the latter, as the only 8.5mm wheels I can find are Mk5, which - obviously? - predates "Mk6 and later"

    Crankpin washers

    • 3-127 (0.6mm Bore: Etched N/S)

    30:1 worm set with 1.5mm bore worm.

    • Is this 3-352 (Gearbox Block: 100DP 30:1: Machined Brass)? If so, the instructions PDF (here) for this refers to additional parts which I guess covers the "1.5mm bore worm" and the next two items (gear and axle muffs).
    • 3-361 (Worm: 100DP: 1.5mm Bore: Acetal)

    Gear muffs

    • 3-101 (Muff: 1/8" OD: Imperial Gears: Acetal)

    Axle muffs

    • 3-100 (Muff: 1/8" OD: Ungeared Wheels: Acetal)

    Spur gears as appropriate (see the arrangement diagram for the specific loco)

    • Where do I find this diagram?  Is it an Association thing? 

    0.3mm brass or nickel silver rod

    • I'd have headed straight to Eileen's Emporium for this, but I understand we've lost this wonderful asset.  Any favourite alternatives (in terms of supplier or indeed material)?

     

    The Milled Gearbox Block instructions refer to a "30T 100DP Skew Gear".  Is this 3-367 (Skew Cut Gear: 100DP: 30T: 1/8" Bore: Brass). Should it be included in the Required Parts List?

     

    I'd very much appreciate any pointers.  If we end up with lots of separate answers, that's fine: I'll combine them all into a final post and who knows, another newbie like me might stumble upon it.  I've even included "Farish", "J94" and "Austerity" in the thread title to make it nicely searchable 😁

     

    Richard

     

     

    image.png

    • Like 3
  15. It was good to catch up with FCAG stalwarts (and hobnob with the Chairman himself) at Perth Model Railway Show a couple of weeks back.  Bits of Fenwick Pit were dusted off and were seen lurking on the 2mmSA stand.  Not just dusted, actually.  Soon after filling a couple of the wagons with faux-coal using a water-based glue, they got boxed up for a couple of years.  On re-opening the box, something with tendrils (and possibly sentience) had grown out them.  Took a bit of cleaning off, and I swear I heard it complain as I did.

     

    A particularly pleasing moment was coupling up the steel hopper in the foreground (a Bob Jones etch) with one of James Batchelor's wagons, and seeing the DGs actually work, including uncoupling. First time they'd been over a magnet, and it was very gratifying.  I'd been havering about sticking with DGs having seen Electras in action at the FCAG mini-meet a couple of months ago, but I'm happy to use the DGs now I know mine actually do what they're supposed to do.

     

    image.png.a571be6ce3cdc6ebca62ad7b74d1a7e6.png

     

    And it's time to bite the bullet, and start to build an actual locomotive chassis.  I've had the lack of a working loco nagging at me since the nascent Fenwick Pit went into boxes two years ago.  I'm sure there's a thread in this forum that'll tell me where to start. Probably...

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  16. 3 hours ago, Trewisin said:

    Hi Richard nice to see your back in the land of locos .It looks like you bought a railway room with a house or did your other half have eyes on it as well.

    I take it you have now retired and this will be your next line of work ?

    Look forward to your adventure with Fenwick ,rgds Ray

    Not retired yet Ray - a couple of years to go at least.  But no longer having a croft gives us both a huge amount more spare time.  Move date set for two weeks from today.  Unboxing of toys will be some time after that, as the room itself needs a fair bit of prep, and I imagine the rest of the house will take at least some of my time!

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  17. Fenwick Pit will be coming out of enforced hibernation this year. We've sold the croft, and bought a new train room that also comes with a house, which is handy. I guess it'll be another couple of months before I unbox everything, but in the meantime, I can plan. 

     

    And it is the perfect train room. 20230103_135349.jpg.5ccc3101b92d57e47c8b0f25f028160f.jpg

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  18. 48 minutes ago, queensquare said:

    I didnt take many DJLC pictures either but here is Port Jubilee which I particularly liked. I intend to shamelessly rob ideas from this one - and move it several hundred miles south!!

     

    Jerry

     

    IMG_7674.thumb.JPG.b31fcda5fef9f26a556c2cb8ed7b930d.JPG

    IMG_7676.thumb.JPG.e0951286960a87842b5b2621fc64af20.JPG

    IMG_7673.thumb.JPG.f217b79624050b6854cee0bae8b66579.JPG

    IMG_7672.thumb.JPG.56ccf939754078bb39aac0402fdc2921.JPG

    This one was still in its box when I was there: it's a thing of beauty.  It does encourage me to make a much smaller layout than I originally planned before moving on to bigger things.  If I remember rightly this was in the same room as CF, although my aspirations are more towards this end of the spectrum.

    • Like 1
  19. Gosh, I hadn't realised how long it is since I packed up the nascent Fenwick Pit as we put the house/croft on the market.  And in those boxes it still lies, along with my modelling mojo.  Seriously considering a visit to Derby to see if I can regain said mojo by osmosis.  And there are so many RMWeb things to catch up on too.  Well, it's officially summer in the Highlands, so that'll guarantee rain for some time, which'll give me the opportunity I crave...

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