Lisa
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Post by Lisa on Dec 11, 2018 6:21:45 GMT
Another idea for something different, how about a Chinese C2 0-8-0? Originally 750mm (or 2'6"?) gauge, there's a group at the Ffestiniog rebuilding one to 2' gauge (or 1'11½"?), so if built 'as preserved' you'd have the same scale as your other models. They'd probably be able to help with drawings too. c2project.org/
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Post by suctionhose on Dec 11, 2018 6:45:20 GMT
If Chinese happens to be your taste:
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Lisa
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Post by Lisa on Dec 11, 2018 6:53:54 GMT
I guess that's what happens when you have half a loco and half a traction engine in your scrapheap.
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mbrown
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Post by mbrown on Dec 11, 2018 7:45:12 GMT
Yes, those Chinese 0-8-0s are very interesting. The boiler looks to be nicely proportioned and the big piston valve cylinders would be fun to make. The wheels look like shirt buttons so they'd be going around at a fair luck at normal track speeds!
I didn't know there was one in this country - and, as you say, that may be the place to enquire about drawings. I believe there were quite a number of variants - some, I think, we're built in Finland and sent Russia after the War.
I must look up the basic dimensions and see how they pan out.
Good suggestion!
Malcolm
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Post by delaplume on Dec 11, 2018 10:15:23 GMT
Hello everyone, Just in case you missed the link in Lisa's post here it is again---well worth a look.... Apparently it's been here since 2007 !!}---------- c2project.org/ ----
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dscott
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Post by dscott on Dec 12, 2018 23:33:38 GMT
Of course anything Chinese and SHE gets me excited! And I know several of the C2 boys and translating Girl who negotiated her sale very successfully. I saw her in 2009. They do in fact have all the drawings on a CD rom and they are very interesting. Lily made me spend a week playing with the 4 in steam last Spring at a Local Railway near her Hometown. They are a basic East European design and possibly were one of the most copied models making its way into and over Russia and down into China for use in Logging and Coal mines. The Boston Lodge one is a 1988 model so is quite young. I have masses of photos of various ones showing parts and in use. I did a quick look over as a possible model and in fact would possibly come out well in 2 1/2 inch gauge??? YES as in 3 1/2 inch she comes out the same size as a 5" Castle! They are narrow gauge!! The other advantage of these is they are basically BASHED OUT and a quick blast with drills and a file would see parts made quickly! Pound shop paint sprayed on a damp misty day would get a perfect livery! David and Lily.
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Post by niels on Dec 13, 2018 5:05:51 GMT
requirements: 1. a decent size to pull more than one passenger. 2. a reasonably sized boiler with a decent grate area to make steam easily. 3. vacuum brakes (Lyn and the BMR loco have these and once you've stopped your train with a little handle in the cab you don't want to go back to hauling a lever on the driving trolley...) 4. Preferably not too much repetition work. I've not yet got into computer design or CNC. (No 4-8-2x2-8-4 Garretts for example!) 5. Most important - availability of fairly detailed drawings. Malcolm A timeless good design and about 15-20 kg adhessive
Four out of five possible is quite good
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mbrown
Elder Statesman
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Post by mbrown on Dec 13, 2018 10:54:43 GMT
Thanks David - I laughed at the idea of modelling a clapped out loco authentically! What a great excuse for slightly slack coupling rods and not-quite-square plate work! And given my trials and tribulations with painting and lining the BMR loco, your suggestion for an authentic finish has a certain attraction.
Neils - I do have the drawings for the DHR B Class (and some did have vacuum brakes in the 1960s). But in 1.25" to 1' scale it turns out as quite fiddly. Push the scale up to 1.5" to 1' and it all falls into place - but that is mid way between 2.5" and 3.5" gauge... I did wonder about 1.5" scale on 2.5" track - but that would play havoc with the well tank and, head on, it would look like it was walking a tightrope.
Still on the list of possibles, though.
Malcolm
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Post by niels on Dec 16, 2018 17:09:23 GMT
Hello Malcolm LBSC did not build models, but small locomotives. When something full size did not please his eyes he changed it. Example the Webb compound Jeanie Deans and some pacifics. I have often dreamed of improving the DHR class Bs and have given up again. Saving weigth somewhere and convert it to more boiler and cylinder power was the way to go. The whole outside frame,cranks and separate water tanks could have been made 130 yars ago as inside well tank -frame and the cylinders could have been a saturated two cylinder compound arrangement. Your Bagnall,Lyn and Burma engines were made from good drawing material I presume .Did You 3D CAD model it first or did You go from drawings to model?
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mbrown
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Post by mbrown on Dec 16, 2018 18:43:54 GMT
Hi Niels,
No computers were harmed (or used!) in the construction of my locos! The nearest I got was asking a friend to use his valve gear programme to help me finalise the proportions of the Walschaerts gear on the BMR loco. But, unlike LBSC, I don't object to the term "model" as I am trying to reproduce a miniature version of a prototype.
All my locos have been built from drawings of the prototype. The Bagnall was done from a small drawing in the history of the Cliffe Hill Mineral Railway. I chose it because I could work in some parts I already had, like a set of cylinders from LBSC's 2.5"g Netta. I based the boiler design on Boxhill and took the valve gear from LBSC's Purley Grange - everything else was made from the little drawing "by eye". For Lyn, I had a copy of the Erecting Diagram which gave me all the important dimensions. I was getting more confident by this time, so apart from much-modified Virginia cylinders and Virginia valve gear taken direct from LBSC, everything else was made from the drawing or interpreted from the numerous photos of the original that I collected.
For the BMR loco, I had the full works General Arrangement from the North British archive. I blew it up on a copier to 1.25" to 1' and made several copies of various sections of the GA on A3 sheets. I also had a pipe diagram for the later version of the class, which was helpful in getting various details right. In the absence of photos, other than the broadside works photo, everything was made to the GA drawing. I try to build as close to the prototype as is consistent with operating needs and within the scope of my workshop and abilities. Most of my work is old fashioned files and fitting really!
Incidentally, I chose the BMR loco having looked carefully at the Darjeeling C Class Pacifics - I had the drawings for them but (a) no vacuum brake and (b) the ashpan arrangement is very shallow and I couldn't see how to make the grate drop without dismantling the trailing truck. One day I saw a picture of the BMR loco which, for a moment, I mistook for the Darjeeling Pacific, and all my design parameters fell into place.
I want the next loco to be at least as close to a prototype as the others, so either really detailed drawings, or a good-enough drawing plus loads of photos, are an absolute necessity. I have a full set of drawings for the SAR NG15 2-8-2 - but I am rather intimidated by the size and complexity of it, hence my request for other ideas!
Malcolm
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weary
Part of the e-furniture
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Post by weary on Dec 31, 2018 12:02:41 GMT
Hello,
Comments in other threads suggest that you have perhaps decided on your next build. So, .................. ...... what is it going to be? Or, are you going to keep teasing us?
Looking forward in anticipation of another fantastic loco'.
Happy New Year.
Regards, Phil.
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mbrown
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Post by mbrown on Dec 31, 2018 18:39:22 GMT
Hi Phil,
Have decided on a Continental European style of design but still havering between three possibilities....
1.
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mbrown
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Post by mbrown on Dec 31, 2018 18:49:05 GMT
Ooops pressed the wrong key....
Three possibilities -
1) Henschel 2-8-2 - the SAR NG15. On the plus side, I have full drawings. Against, it's a very big beast with some very complicated bits like the rear frame/ashpan arrangement and the Krauss Helmhotz pony truck. No point starting if you're not going to include that sort of detail - but it's not straightforward.
2) Henschel Heersfeldbahn 0-6-0 Tender-Tank loco - WW2 military railways. I have a semi-decent, but not detailed, drawing and there are several preserved examples. A chunky little engine - maybe a bit small. Currently the favourite, I think.
3) Orenstein & Koppel 0-8-0 tender loco from the Mecklenburg-Pommeranian railway No. 99 3462. Now preserved and working. A real little beauty and very continental - but no proper drawings are known to exist so it would be a case of travelling to E Germany and measuring up the real thing.
All have piston valves which I am keen to try for the first time. 1) and some versions of 2) had vacuum brakes. 3) was, at one time, earmarked for the Vale of Rheidol before they went over to air brakes, so a bit of poetic license would allow me to fit vacuum. Each would have different challenges, so the key question may be whether I can get better drawings of 2) and 3) or whether I bite a very large bullet and go for 1).
Choices, choices - but as I enjoy the research as much as the building, I will go on gathering information for a bit longer before making a decision and starting o cut metal.
Happy New Year!
Malcolm
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timb
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Post by timb on Jan 4, 2019 17:54:16 GMT
Hi Malcolm
If you were looking continental then this Royal Bavarian Railways Pt2/3 might tick some boxes.....
Tim
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mesb
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Post by mesb on Nov 18, 2019 0:56:43 GMT
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mbrown
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Post by mbrown on Nov 18, 2019 9:33:43 GMT
Way back in the 1980s George Barlow used to bring Tom Glazebrook's superb Fayette, as illustrated in LBSC's Live Steam Book, to 2.5"gauge rallies. It remained in unpainted brass just as shown in Curly's pre-War articles. I was lucky enough to drive it on several occasions and it ran like the proverbial sewing machine.
But my next prototype is now decided - No.3 in the above list. I went out to Weisswasser near the Polish border back in June and spent a couple of days measuring her up and photographing her. Inevitably, there are some dimensions I missed, so a return visit sometime may be on the cards- the guys at the Waldeisenbahn Muskau were very hospitable.
I am now working on some drawings, assembling materials, and hope to start cutting metal soon - beginning with fabricated piston valve cylinders.... I'll do a thread to show progress in due course.
Malcolm
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