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Beatty 139

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Everything posted by Beatty 139

  1. After much tea and custard creams at our local G1 meet today, I had some positive feed back on works so far, even if the first comment was "what is it?" I was somewhat transfixed by a live steam Crosti boiler 9F that works as a real Crosti, I am told it should be running at Warley so it's one to look out for. Progress today has been to fit the cooling fan. The fan is powered by a miniature 6mm dia motor/gearbox I'm not sure it was worth it as you can hardly see with the roof in place. I have fitted the roof outer layer and fan grill so now its starting to look much more like a loco now.
  2. The time so far has largely been spent on the body, I would estimate the following Cad design about 25 hours.... largely in front of the TV ! Laser time about 2 1/2 hours Thinking time, research, staring into photos trying to get a clue about whats in the shadows at least another 20 hours but some of that is merged in with the Cad time Body erection so far about 25-30 hours Under frame so far about 6 hours. I have had the wheels machined for me to save time and I think the chassis will be a Mk1 with 3 interdependent traction motors wired in parallel it will be important to keep all wheels on the ground as if one take the load and one of the others slips that will draw more power and make her quite light on her feet, at the moment I have put about 1.5mm of lift into the center axle and I will see how that goes, but I can see me having to fully spring it to get the best from the performance. After washing up today (I had to or I would have been looking for another domestic chef!) I have just put a couple of hours into fitting the inner roof (I have found rowmark takes a tap very well and makes a good strong screw tread) and skinned (soaking it in boiling water makes it bend nicely), and blending it into the profile of the body. Its our local G1MRA area group meeting this afternoon so I will not make much more progress beyond drinking tea and eating biscuits. Body jobs left are to: Finish louvers and beading to LHS. Fit the outer roof, hatches fillers, fan grill etc. Vacuum form the auxiliary engine bonnet and fit with beading make up exhaust etc. Make up the lamp irons, handrails and vacuum pipes. Turn up buffers and fit. Make cooler fan and fit. Make up engine room interior and cabs (including battery box for under the engine base) Worst job.... Paint. On top of that will be to finish the frames and fit RC gear etc.... the list goes on
  3. No kit for this one, although another member of the G1MRA has asked, to write the instructions etc. To turn this into a commercial product would never be justifyed by the sales, and this is very much a project for my own personal pleasure. I could have my arm twisted to offer a set of parts as a scratch aid or even build one as a comission now the CAD files are created. It has however taught me a lot about building larger structures in Rowmark, I had a heart stopping moment earlier this week when I dropped it on the concrete floor, but to my supprise except for a small chip it survived, it's not something I intend to do often but it's good to know that the material is resilient like that.
  4. Today I have been largely thinking about the roof! The roof is something that have been bothering me for a while now, and it is one point where I going way off beam from Jason's 4mm D9. First job today was to make up the control cubical, this have served two functions I have put a couple of 4mm captive nuts in the base of it to form that ends fixing to the frames, secondly it will form one end to mount the roof from and again has had a couple of fixing holes to allow the roof to be screwed to the body, there is a purpose to this, I have had a miniature motor/gear box turn up form China and I want to power the cooling fan in the roof, this will be fixed to the body so the roof will the come off to access it, in most likeliness it wont be worth the effort or will break and never get looked at again. The roof frame has been built like a model aircraft wing, as the Rowmark is quite ductile I want to give it plenty of support to keep it true. I have laminated up the area around the fan duct out of 1.5mm layers. Then over clad with 0.5mm material the next job tomorrow will be to over clad the whole rood structure with a layer of 0.75mm material and flare it into the sides, the final roof finish will be another layer of 0.5mm to which the hatches etc will be fitted onto. The fan duct was cut out and that's been today's progress, much to my other half's dismay as D9 has come before washing up! I'm not sure I have said this yet but I only looked at this thread after seeing the D9 title and wondering if it was about the Midland Reds fantastic home build double deck buses of the 60's. we could do with the 7mm version now to finish the set as we have had 2mm, Jayson's 4mm one and my part but one in 10mm scales! Off to think about engine room details and cabs now!
  5. I should be stewarding on the G1MRA railway which for this year is Midsummer Norton I beleve. Even if it isn't running I will bring it along. As I am normally lurking on the tables with G1MRA books, and various part finished bits trying to convert a few folk to give G1 a try.
  6. Just had some positive news. Steve Foster has just sent me a photo of the 3 completed traction motors and driving motors that he has custom made for this project. The wheels are by Walsall model industries as are the pony truck ones, they kindly posted the wheels out directly to Steve for me so he has completed them before I have even collected the balance of the order for the rest. I think the chance of getting D9 running by Warley has moved a step closer although I have got a bit behind this week with finishing the body, but I have had a few hours CAD work on the detail for the frames such as springing equalization and axle boxes.
  7. Some times the best laid plans go wrong, my delivery of material was due today and as usual the delivery got missed I then spent 2 hours in the depot while they tried to find my parcel, only to get it with two large foot prints on the box, not bad for a package with fragile sheet material printed on the box about 10 times! Not much more progress only cut one side of the final 0.5mm overlays and dropped them on as well as stuffing a load of 1/32 brass rivets into the overlay frame sides. I think it's really starting to look some think like now, hopefully by this Friday the body will be largely complete, leaving the frames and the roof to think about.
  8. Once marked out glued together, I first centre punched each hole, to make sure the tip of the drill went true, piloted all hole a one size under the 3/16 bearings size with a drop of WD 40 as a lubricant to stop the aluminumin picking up, once that was done running the pillar drill nice and fast opened up the bearing holes to size, followed by the others, after cleaning the burrs off then cut the frames to profile, the top face having been cut square on a proxxon table saw before pairing the frames up to make a nice square edge avoiding the deformation where the alloy had been cropped from a sheet. Using a fairly corse pericing saw blade with a little bees wax for lubricant on the blade, the aluminium does need a bit of lubricant as it's soft and clogs the teath, the edges were then draw filed. The superglue loses it's hold when warmed so then I had two matched frames.
  9. It's all of intrest, in the case of D9 Armstrong Whitworth they didn't have anything to follow so were writing there own book on how to make a diesel locomotive. It's such shame so little has survived. What you say BR(W) makes sense for main line British loco as unlike the AW locos they have no inlet cowling on the roof to guide the air into the fan. Getting back to the AW Universal, D9's roof is going to have to be a best guess and my model will be much like JCL's as I don't think anything better is going to come to light about AW cooling
  10. Thanks for that, it's really a bit of light relief in-between building my next G1 live steam, and developing new stuff for my Woodbury Models brand. I was so taken by Jason's post that I wanted to give it a go, and have something unique that suits my intrest in pioneer locomotives, a chap has built LMS 10000 & 10001 in G1 it could be an intresting day if we have them running as well as the AW Universal at the same time. Although something keeps telling me the Fell diesel should come next! It's a Shame more people don't give G1 a go as it's a great scale to model in and no more expensive than 0 Gauge if you scratch build, plenty of friendly people and clubs with tracks to run on, it just needs a bit more of a push towards railway modelling at times, as it is very much the mixing point between railway modelling and model engineering.
  11. Well I haven't been just thinking about fans, and the motor for it hasn't turned up yet so that's still for another day. so other than applying the 10 thou plasikard louvers leaving them over night then scraping them back to 30 degree tapper I have started to form the cab domes The domes have been formed from 1.5mm sections layered up to form the outline of the profile. I have put a first layer of filler in and cleaned it back and I am reasonably happy with the shape of the domes. Its also been time to think about making the Universal move, wheels are in the process of being machined then they are going to the chap who makes up the traction motor units (3 like the real one). The first thing I have done is cut a 3mm aluminum plate to fit the bottom of the loco end to end this will the the structural bed plate for the loco and should also provide a good heat sink for the speed controller. Onto this plate will be screwed 4 10mm x 1.5 aluminum angle sections, including at the rear of the buffer beams. The outside faces of the frames shall be in 1.5mm Rowmark but for structural strength as they have to carry the bearings for the wheel sets etc, the inner frame layer has been cut from 1.5mm aluminum. I cheated a little cutting these out instead of riveting them together to cut them as a pair, they were 'super glued' then just warmed to split them apart after. I have made the inner frame about 0.5mm less than the outer ones so they don't look too thick when overlaid, save measuring they had a quick coat of rattle can black then dropped onto the laser to mark them out. I then drilled and pierced them out as normal. My new stock of Rowmark is due Monday so that should see the outside beading going on the body.
  12. Thanks for that Baz, do you have an indercation as to what loco that drawing is for? The BR ones were built 1955-56 as HC 898-902/938-942 and were 204 HP as the cover of your book, the triangular gauge panel is intriguing as it looks like something that you can just make out through a window in one of the photos. The general controls are very similar to the second batch of BR Hudswells D2511-19. Out of interest does your book have any infomation about controls at the rear of the cab? Many thanks again for posting.
  13. Work with a chap who when he first qualified as an electrical Enginner moved over to Canada for a few years on CN before coming back to the UK so I asked him how did the cooling work, from his memory it blows in from the top and out through the sides. It's one of the little details we don't think about much as modellers! Back to work lunch over!
  14. I should say that I will make the fan boss, coned but not protruding above the roof line like most AW locos, I do Agree with Bernard, if it was a pattern that AW had in the foundry I doubt they would change it. What they would change is the pitch angle of the blades as that is what sets the performance. It could be that AW cooling systems air path went sides to roof and the notes on the drawings about filters are a red herring but then I guess they had no convention to work to and were inventing the wheel as such! It's a shame that no set of instruction manuals have turned up in some distant railways office as that would offer so much more insight into the practices, I haven't even ever seen a cab interior photo anywhere that you would have expected promoting how improved driving conditions were so it's all guess work for me! I added porthole windows into the bulkhead doors just on a guess they would have had some sort of vision panel, but who knows!
  15. Hi OzzyO AW had a thing about filtration of the air, so under the fan there is a filter bank under the fan in the case of the universal, I presume the idea was to keep the elements clear from build up on them. If you make them work the otherway round any dust, brake dust etc would get dragged straight into the cooler group elements and they would soon block.
  16. Many thanks again Michael for that, I did notice the cab front images had Buxton certificated switch gear and that it had the 'pointed' roof but I think the general layout would be similar and the images have the rear bunker fuel tank as per the BR batch, I had already come to the conclusion that the BR ones had the handbrake stand to the rear of the cab so, unless something better comes to light my model will be based largely on the layout of equipment as per the photos, but with more normal switchgear and conduits.
  17. The fan shape is an question that I have given quite a lot of thought on, and I have some insite on with my professional job as a HVAC design engineer. AW were designing most of it's loco for harsh environments, so to achieve the heat disapation from the cooler groups would have required either larger surface area, or greater airflow, even with the larger loading gauges the cooler groups from studying the images don't get significantly larger, so they must have gone for the increases air flow. There is then the trade off that with that greater air flow comes increased restance so the pressure increases, add to this filtration as crops up time and time again and the obscration factor for both the filters and cooling elements and with an Axial fan you start coming up with some big numbers for input power and the design ends up like a jet engine the compressor section of which is an Axial fan, and which the AW locos for export all look like they have jet engine poking out of the roof. So going back to D9 we have a loco designed for home Market operating in modest climate and a 800 HP power unit two cooler groups of very generous size for the duty (look at a BR class 73 similar HP but a cooler group half the size) if we say we need dissipate the waste heat from 400hp (each side) go and compare that against a modern lorry tractor unit, D9 is massive in comparison, so that takes us back to air flow required, low volume air flow, low resistance through the radiator elements, lower pressures needed less HP to drive the fan, simpler unit especially when we consider it's 5' diameter, back to how the designers would have thought simple bladed axial fan, something that were much more used to for the UK, we can see that D9 had no inlet guidance cowl on the roof so I suspect the fan boss would be the same it wouldn't need to be for the air flow duty and pressures it had to accheve
  18. Just to let the group know I have had the samples come in 1mm 1.5mm and 2mm birch ply AB/B grade interior glue and the difference in cutting is remakable compared with normal thin ply, it cuts with much less power and faster, for example the 2mm cuts cleanly and completely at the same kind of setting I have to use for 0.8mm ply, and the cut has little edge burning that you can run your fingers along with no 'soot' transfer, much like normal laser ply that is normally only avaliable 4mm upwards. Hope this infomation is of use to the group.
  19. Huge is a relative term and for G1 it's quite a modest sized loco, but it does fill the loading gauge so should have a presence. I have a interwar period LNER goods set that I normally run with my live steam J27 the Universal should look well on them. I am going to have a go at having it running for Warley show, but I might not get it done due to the delivery on the traction motors. Back onto the issue of size I don't think I could go back down the scales now but you do find yourself worrying about things that are passed over in the smaller scales because they are there, it's a hard choice to decide what leave out sometimes.
  20. What with a funeral and the G1MRA AGM this week I haven't had a lot of chance to make much progress this week on the 'Universal' I have made up the inner frame for the auxiliary engine bonnet, and also made up the 0.5mm overlay for that cab end. I started cutting the louvers out from 10thou plastikard on the cameo and putting these in place, i have stated thinning them down on the top edges to a proper profile, I am sure that by the time I do them all it will have driven me to drink! At the AGM I manage to source the wheel castings for drivers and bogie wheels, so they will be a turning job over the next week or so, and I have sourced the traction motors and radio equipment, some nice lost wax LNER loco lamps, I was hoping to get some lost wax buffers but the trader who used to do them has ceased trading so that will be another turning job, a nice distraction from scraping louvers to profile! I think this weeks main aim will be to make up the formers for the dome cab ends and main roof supports, I have ordered a low speed geared motor for the cooler group fan so I am hoping the slow boat form china will bring it soon so I can work it in to the loco.
  21. Many Thanks Michael, that's just fantastic I understand the first batch of BR locos were W/N 898-902 so 903 stands a good chance of being close, out of all the Industrial diesels I have worked on and driven at various presavation sites over the years I have never driven or even been in a traditional HC I just love the steam regulator !!! Out of interest do you have the key for the various items?
  22. I though I would ask the question of the ever knowledgeable RMWeb folks, before I set off to trail around the UK looking at locos. As I have the current project on the bench heading to completion rapidly I want to gather the information to finish another one of my half built loco, I started a BR Hudswell Clarke 0-6-0 as per Birkenhead docks some time ago. As these have no vac brakes I presume the cabs are purely industrial except maybe for a DSD treadle. The other issue I have is the arrangement of the equipment/fillers on the top of the bonnet, I know that Birkenhead was equipped with high level filling lines for these locos as they were not fitted for ground level filling as per other BR classes. but non of the images or drawings I have make it clear how this was laid out, again I would presume this was as the industrial version as I am sure if BR had gone through it's usual specifications low level fillers would have been provided. Has anyone got any better ideas or even photos? The curse of large scale modelling in G1 is you can see all the detail! I know this is the Industrial section and I am asking about BR locos but I think the 10 Hudswell's were the closest BR ever came to ordering a 'stock' industrial loco as they were not even fitted with electric marker lights just extra lamp irons! Any assistance appreciated. Andy
  23. Thanks Jason The only reason it's making quick progress is thanks to you doing the thinking first on how to make the assembly. The jobs for this evening is to cut the bonnet nose internal formers out and fix them in place. Having now got my copy of the AW book back and carefully studying the photos in it you can make out quite a few changes to D9 over her short working career, I think that my model will reflect the loco towards the ends of it's days with the LNER with clasp brakes on the pony truck, steps on the cab ends and recessed louvre panel on the body side where the exhausters were modified, just a shame we have no clear roof photos.
  24. Hi Sorry for any confusion. I first ran my parts through my laser cutter in MDF to check that I had everything right, 1mm and 1.5mm MDF are a lot cheaper then Rowmark and Troply, and I wanted to check everything. Rowmark and Troply are trade names for basically the same thing they are modified acrylics that will cut in the laser cutter and behave more like HIPS the main issue is that Rowmark ADA isn't made in any thickness lower than 0.75mm where Troply is available down to 0.5mm As this is a G1 (10mm/1ft scale) project there is quite a bit of 'beef' in its construction so its all so far built in 1.5, 1.0 and 0.75mm materials all too thick for the Cameo cutter so these sections are all laser cut. The outer detailing will be in 0.5mm Troply which will again be laser cut, as its a right pain to cut with a knife and is very tough, but thinner detail will be cut from HIPS (plastikard) in 10 & 20 thou on the cameo cutter as this is the best way with styrene to give the 'depth' to the side construction that becomes more obvious in the larger scales. Hope that clears up everything about the construction so far.
  25. Some projects capture the imagination, I'm sure my customers will understand that when they come to collect stuff next Saturday and find that I ran out of time to get them finished, but the 'Universal' hasn't honestly taken that much time so far except on the CAD side of things and as I only have one laser cutter I guess its not wasting time if I am working on the files while its doing its stuff. So as of last night I now have a basic shell of my gone large D9. So far so good I think, the laminated sides have worked fine and give the model so weight and robustness. Next job to finish the bonnet ends and that cab to see how it all looks, I just about have enough 0.5mm Troply left in odds and sods of off cuts to make that up, but then the cupboard will be bare until my next order arrives.
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