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David Holman

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David Holman last won the day on September 25 2013

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About David Holman

  • Rank
    Senior Member
  • Birthday June 18

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  • Biography
    Former primary headteacher.
    Active modeller for 30 years, last 20+ in 0 Gauge [Guild Member]. Several articles in Railway Modeller around layouts Hawkhurst & Cranbrook town [both 0n16.5], and Loose End and Eatonswell [standard gauge], plus one in Model Railway Journal on Wantage well tank.
    Long term interest in Irish Railways, for reasons can't explain, other than their obvious charm. Now working on 36.75mm, 7mm scale model of a Sligo, Leitrim & northern Counties railway proposed branch line

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  • Location
    SE England

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  • Interests
    Model Railways, bird watching, walking, most sports.

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  • Occupation
    Education advisor
  1. Failed loco

    As Eoin says, it could be mechanical. However, it could be electrical instead. Suggest you remove the body and check wiring from pick ups to motor. A loose wire anywhere would explain why the loco is dead... Poor, as opposed to none, running could be dirty wheels and/or pickups not touching the wheels. Alternatively, if you can hear the motor, then it might be part of the gear train is loose. Eg, the worm is not fixed to the motor spindle, or the main gear attached to the loco axle has come loose. Don't know anything about these locos, but on kit built locos the gears are held in place with grub screws and one of these may have come loose.
  2. Brighton show, 25% Irish Broad gauge

    Good to see that there IS interest out there. No wonder 21mm looks better than 4'1... For anyone doing 7mm scale, it really is no more difficult than 32mm gauge. Loco axle available, wagon/coach axles easily adaptable, C&L bullhead track only needs a 36.75mm gauge. Plus there are plenty of kits available too. With all the high quality RTR out there, it is no surprise folk stick with what they know, but there is even more satisfaction to be had in doing your own thing and being different. Well, I would say that, wouldn't I?
  3. Brighton show, 25% Irish Broad gauge

    Before anyone gets too disappointed, this was a small show, last weekend, with just eight layouts, however, two of them were Valencia Harbour and Arigna Town, which we also think represented two thirds of the broad gauge Irish layouts currently being exhibited. I'd love to be proved wrong but with Richard Chown no longer with us, it is likely Castle Rackrent will not be seen for a while, while Paul Green's S scale layout does not seem to go out at the moment. So that just leaves Ballyconnel Road as the third. So, tell me I'm wrong, because it would be great to see some more 5'3, in any scale!
  4. GSR Class 551 / J26 ECMbuild in 7mm

    By the way - is it the right gauge?
  5. David's Workbench

    Much to my surprise, the hornblocks and bearings arrived in the post on Monday, despite the website suggesting up to 21 days - so well done Dart Castings & the Postie. Any ideas of continuing with the cab of the railcar were therefore ditched in favouring the chassis completed & this is what I have been doing these past few days. Having made a rolling chassis that really did run well first time, there was more than a bit of trepidation in modifying it, but the hornblock/compensation system is very forgiving. Indeed, I could probably have left the front axle as it was, but decided to follow the instructions and cut four slots 6mm wide and 4mm above axle centre line in the frames. A small engineers' square and a scriber was all that was needed, along with a slitting disc in the mini drill to do the cutting - seemed a tad more subtle than the brute force of the Dremel... A bit of tidying up with files and I was then able to solder in new fixed bearings for the driven axle. The sliding hornblocks have to be made up from the etches supplied. Nothing daunting, just a couple of folds and a bit of solder. A bit more filing was needed to enable the bearings to slide freely, but they were soon ready to be fitted to the chassis. It was at this point that I found my hornblocks alignment axles were 3/16" diameter, but it was not too difficult to make some 1/8 ones out of some old standard gauge axles in the scrap box. The axle ends need tapering, so you can fit the coupling rods over them, to ensure they are properly aligned. Just a few rude words and with the help of a couple of hair grips, the hornblocks were soldered in place. All that was then needed was a pivot, to ensure the rear axle sits level. This was easily done by drilling a hole in the rear spacer & soldering a piece of 1mm wire along the centre line of the chassis, thereby giving it the characteristics of the three legged stool - ie it will always sit level on the track, regardless of imperfections, with obvious advantages for electrical pick up as well as running quality. However, while I know the above to be true, I am also a devout believer in the Law of Sod, so there was a certain amount of trepidation when re-assembling the wheels & rods, but all was indeed well. Course, it then needed dismantling again, so I could fit the motor/gearbox! A small Mashima & 40:1 gearbox was duly installed, along with pickups [0.3mm phosphor bronze wire], followed by a bit of test running, before it was all dismantle AGAIN, to enable painting. Hopefully that will be the last time I have to re-assemble it for a while! A bit more work has since been done on the cab, while the two sandboxes were filed up from some 80thou plastic, laminated to the required thickness. Finers crossed, I'll be able to make a start on the passenger section soon, though attention is back on Arigna Town at the moment, with a show at Brighton over the weekend - so a bit of TLC required on locos - wheel cleaning, pick ups, lubrication & the like. As for the latest photos, the bottle of meths is always close at hand in my workshop - purely for cleaning purposes of course!
  6. GSWR 52 Class GSR/CIE D17 4-4-0

    ... and were you to ever get as far as a 7mm scale version, I would be very interested too. An utterly delightful loco.
  7. GSR Class 551 / J26 ECMbuild in 7mm

    Not surprised to see the model going together well, Eoin. Did my one using the Tyrconnel/Alphagraphix kit. A relatively simple affair [like me], seem to remember it only took about 40 hours start to finish - painting & weathering included. Runs extremely well, which still surprises me as the chassis was a single fold up etch, several levels below your workshop practice!
  8. Bantry Town Station 1950's

    Definitely worth space on the layout!
  9. David's Workbench

    Measure twice, cut once... It had all been going so well, but then the wheels arrived in the post from Slaters & upon fitting them, it soon became apparent that the chassis was sitting much higher than that of the 'Unit'. I'd taken the latter apart, so I could compare & contrast with 'the one I'd built earlier' & I found I'd drilled the bearing holes too low in the frames. So, a pox on my measuring then. A bit of head scratching [& not a little bad language] seemed to indicate two options - build a new set of frames, or investigate fitting new bearings in horn blocks, thereby adding springing or compensation. I'd done this a few years ago with a couple of Slater's Manning Wardle kits & it must be said, the locos ran superbly. However, the Slaters website only seems to have horn blocks for 3/16" axles, but the Railcar ones are 1/8". A bit more searching turned up some of the latter on the Dart Castings website. Seems they are intended for the Sharman 'flexichas' compensation system & given this is an 0-4-0 I'm working on, am hoping a fixed driven axle, with the other one able to 'rock' ought to be possible. Bearings and horn blocks are just £6. Shame postage is another £3 though! So, while waiting for these to arrive, I made a start on the bodywork for the tractor unit. A 'footplate' was cut from 80thou [2mm thick] plasticard, with a slot cut in the front, so I could let in the radiator casting I'd made for the Unit. Here, another unwanted issue presented itself. On the completed Unit, I'd put the distinctive 'side beams' level with the top of the buffer beam, when they should actually sit just above. Something else on the 'to do list' then. The cab bodywork has proved extremely challenging to get my head round, because it is made up of all sorts of different angles & levels. In itself, it is just a collection of plasticard rectangles, but working out what to cut when has caused a lot of thinking & several false starts. Using the completed Unit as a reference point has not been helpful either as its dimensions are not consistent with the 7mm Narrow Gauge Society drawings. Hence, am sticking to the latter, though the Alphagraphix card kit [which must be based on same] is helpful both as templates & for some of the inside cab detail. The 'dashboard', for example has simply been cut out & stuck in place. Same for the cab floor. Realised it was also necessary to paint the cab interior at this stage & that was done with acrylic brown, which of course dries quickly. The body work was built in layers, with a 40thou inner shell and 20thou outer shell to enable the tumblehome on the cab sides and make the bonnet sides appear separate. This work was only done up to the base of the windows, because it seemed to make sense [to me, at least] to make the upper glazed section separately & then fit the resin cast bonnet & roof sections around this. Only time will tell if this is success or not! However, while the Unit is not quite going to be the identical twin of the Railcar tractor unit, its chassis has enabled me to try the cab body on it & if the two will not be interchangeable like the real things, it is helping me carrying on building till the hornblocks arrive. Photos show progress thus far - the castings need quite a bit of fettling, while the bonnet needs a run of louvres on the long side, plus there is a fair bit of beading to add. Am just hoping I don't see any fresh errors when I go back to it...
  10. murrayec's Projects

    Fabulous. Each component is a jewel in its own right, so the ensemble really will be quite something.
  11. David's Workbench

    A good day's work? One of the advantages of being a serial layout builder is that I frequently go where the muse takes me. A bit of a butterfly mind one would say & maybe a dustbin one too... Anyway, after tidying up the workbench following recent efforts with Fintonagh's baseboards & infrastructure, I decided to have a go at something new. Actually, not quite true, as I'm always plotting what might be the best way to move my projects forward & CVR Railcar No1 has been working its way up my mental list for some time. Indeed, I'd hoped to buy a set of etchings from Worsley Works at Expo Narrow Gauge a week or so ago, but sadly the redoubtable Alan Doherty seemed to have everything but, while the website suggests it may not be available for a while. So, a scratch build then. Not too much of a problem [hopefully!], as I've built several of the beasts over the years, starting with a 4mm scale Taurgem kit of a pair of Colonel Stephens railcars & then going through various 7mm narrow gauge versions including a 'rail-lorry' made from a Corgi Lipton's tea van, then a Waggon & Mashcinbau BR railbus [just before the Heljan one came out], before finally doing the SLNCR railbus and Walker railcar for Arigna. I've got the 7mmNG Society drawing, a range of photos in books and ones I took myself at Cultra, plus the Alphagraphix card kit and even some bits left over from the CVR 'Unit' I made from Worsley etches earlier this year. On the latter, knowing I was going to do the Railcar at some point, I made my own castings for the roof and bonnet sections, so I've got a fair bit to get me started. The plan is that the chassis of the tractor unit will be in nickel silver, while most of the rest will be plasticard, with seats cast from resin. So, this morning, I delved into my 'nickel silver' box [there's a brass one too], to see what bits were available. There was [just] enough 30 thou sheet for the frame sides, while frets I'd kept from the two SLNCR 'small tank' kits yielded material for frame spacers and coupling rods. I follow what I believe is the standard practice for making a simple chassis. Two pairs of 'blanks' were cut, one for frame sides, the other for the coupling rods. I'll confess to being a bit of a heathen here, preferring to use a reinforced slitting disc in the Dremel to a coping saw any day.Each pair was soldered together, then the rods were clamped & soldered to the frame sides, so I could drill for the rods and axle holes through all four pieces. This then means the axles and coupling rods line up perfectly - not always a gimme where kits are concerned, I've found - though newer ones [probably drawn on computer] are much more accurate these days. Once drilled, each pair of rods and frame sides were separated & filed to shape. Finally, all four pieces were separated, then I cut for frame spacers so I could assemble the frames, using one eighth stainless steel rod through the bearings to ensure everything was nice and square. Finally, for today, I added small brass washers to the rods to beef up the bosses, plus some fluted brass strip to make them thicker and the correct profile. All this took getting on for five hours and the pictures below don't seem to amount to much, but [fingers crossed], once the wheels arrive, I should have a working chassis in fairly good time after. Watch this space!
  12. Clogher Valley Project

    This year's Uckfield was utterly superb - probably the best ever and must rank as the best 'small' show anywhere in the country. Arun Quay, Denton Brook [remote controlled 7mm scale lorries & working cranes], Bridport and Trever Nunn's latest S gauge project very much the highlights, but there were no average layouts & any one of them could have been a best in show contender anywhere else. For me, it was also a reminder that in a year's time, Fintonagh is booked to make its debut there & I have but one baseboard completed, no fiddle yard, no legs or fascias, plus just two locos, two coaches and four wagons. Time to get things going! As the photos show, have paired the two boards and been working on the area around the join, together with the back scene on the second board, plus the road surface. The latter is card, painted with gloss grey & covered with talc. The fiddle yard is coming along and just needs the turntable top cutting. It is fairly simple being a 6mm birch ply box, with a 9mm MDF top and more on the latter forming the train turntable. With just five tracks, there will be none of the complications of Arigna's sliding/rotating jobbie & is a lot lighter too. The sub-structure of the layout is now the Mark 4 version [!]. Mark 1 was using Arigna's original trestles & beams, with higher cross supports, but proved far too unstable, so Mark 2 was 1.2m trestles, but these seemed also less than stable. Mark 3 was simply an idea taken from Iain Rice's Cameo Layouts book & was going to involve short [50cm] internal legs, mounted on standard trestle tables at shows. However, thinking about it, these can be less than ideal in some, so ditched that in favour of another Rice idea. This uses two Screwfix height adjustable steel trestles. At just £25 each, they are a bit of a bargain & can hold up to 250kg, so my layout ought not to tax them. Have made two 3m folding beams from 30mm x 12mm softwood. The picture is from maestro Rice's book, but my set up is a straight copy. Will post some of my own pics later, including the fascia/pelmet arrangement which will make the layout fully enclosed.
  13. David's Workbench

    Slaters corrugated plastic sheet, Popye. It is quite thin, so possible to bend to the arc of a roof. I wrap it round plastic water pipe first. Prefer Wills [4mm] corrugated asbestos sheet for buildings though, as it replicated the 8'x2' sections of the real thing.
  14. David's Workbench

    The wagons are now almost complete, with 4/6 having couplings fitted this afternoon. Am kicking myself for not buying some more Kadees at ExpoNG last weekend... Painting was initially straightforward, Halfords grey primer being both under and top coat. Like many Irish vehicles, under frames are the same colour as bodywork, though get fairly dirty of course, so it was the usual Martyn Welch weathering mix [Humbrol 133 & 53] brush painted. Lettering came next, hand done, using a white gel pen. One of these days I will get round to acquiring a proper bow pen, but for now I find that the gel works ok as long as you don't look too close... The corrugated roofs got the same author's treatment, this time running a dilute weathering mix into the grooves and [once dry] dry brushing Humbrol 64 [light grey] to highlight the ridges. Bodywork then got an even more dilute mix of the weathering colour, then after an hour or so, once it was dry, but not fully 'set', I got to work with weathering powders. I find this works well in terms of the powders not needing to be sealed with varnish as they are fixed by the paint.
  15. Hornby class M7 to Irish GSR calss 279

    Welcome back - always good to see folk being creative.
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