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| Scratch building O scale rolling stock. - Scratchbuilding. - More Practical Help - Your Model Railway Club | ||||||||||
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MaxSouthOz Admin 
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Thanks, Terry. ____________________ Max Port Elderley |
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Ed Full Member 
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Looks great Max  , but must be a very fiddly job with all the small bits of styrene.Just wondering if you would have ever considered doing something similar in HO, or is it even possible in the smaller scales. Ed ____________________ Engineers just love to change things |
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MaxSouthOz Admin
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It's not too bad, Ed. I haven't tried any scratch building vehicles in HO - only buildings. This is a confluence of several situations. I started building in Ow5 because I got interested in a 1:50 boat and I thought a 1:48 layout would be good ( http://yourmodelrailway.net/view_topic.php?id=14066&forum_id=21 ), which you know about. Then I realised that being one subject away from my Master Modeller, I could scratch build 8 pieces of rolling stock to qualifiy - and populate my new layout at the same time. Otherwise I wouldn't have done it, but I'm quite glad that I have. ____________________ Max Port Elderley |
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Ed Full Member
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All I can say is well done Max, and you must have a lot of patience Ed ____________________ Engineers just love to change things |
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BCDR Moderator 
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Hi Max, I had a look at post 20 before my posting my message. I see the air reservoirs upper left, what looks like the AB valve box in the middle, the brake cylinder would normally be to the side of the AB valve and almost in line with the hand brake chain to which it is connected via the vertical actuator lever (not always in line, as usual probably as many variations to the design as builders). Are you following a specific prototype with a combined AB valve/brake cylinder or is this a generic representation? I'm in the middle of a project on railroad air braking systems, hence the questions. The plumbing on hopper cars is open to view, unlike regular boxcars where it's often pretty much out of sight, with in many cases the only obvious items being the hand wheel/gearbox and retainer valve. Nigel ____________________ ©Nigel C. Phillips |
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BCDR Moderator
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Hi max, I thought a couple of photo's for those who may be wondering what the brake component arrangement actually looks like (in HO) would be of interest. I had some photos to hand of one of my Kadee covered hoppers, mid-1950's design (Pullman Standard I think). Four major components (from right to left): air cylinder (containing 2 reservoirs, one for emergency use); control valve (in this case an AB design); brake cylinder and vertical actuator lever; manual brake wheel and gearbox (connected to the bottom of the vertical actuator lever). One other item that is quite noticeable is the air line for the brakes that runs along the side of the body. Not sure I would want to scratch build this in HO, although all the brake parts are available in brass or white metal. Nigel    ____________________ ©Nigel C. Phillips |
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MaxSouthOz Admin
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Thanks, Ed. Thanks, Nigel. Good reference photos. ____________________ Max Port Elderley |
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MaxSouthOz Admin
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There are lots of little differences from the Atlas HO model I'm copying - much less detail, as well. Thanks to your photos Nigel, I can add a lot of this stuff. I'm not looking forward to airbrushing it.  ____________________ Max Port Elderley |
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MaxSouthOz Admin
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I've printed and laminated your photos, Nigel. Can you tell me, please - looking from the brake wheel end of the model, does the brake pipe run along the right or left side? Thanks ____________________ Max Port Elderley |
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BCDR Moderator
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Hi Max, All the way along one side, the cross-over is made under the platform. Brake rod runs down the middle. Should have some more photos, I will send when found. Nigel ____________________ ©Nigel C. Phillips |
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MaxSouthOz Admin
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Ah, but which side, Nigel? If I'm standing at the brake wheel end, facing the wagon, is it on the right or left? I really appreciate these photos. The Atlas HO wagon I'm copying doesn't have the detail that yours has. I've fabricated the operating cylinder and the rest of the detail should be straight forward. The ladder rungs are different, as well. I'll post up a photo as soon as I'm able. Thanks, again. ____________________ Max Port Elderley |
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MaxSouthOz Admin
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OK I've removed all of the steps so I can gain access, and fitted the new brake gear. Notice that it has the new series larger brake cylinder.    ____________________ Max Port Elderley |
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MaxSouthOz Admin
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. . . and one from the end. ____________________ Max Port Elderley |
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Petermac Moderator 
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Never mind "I've fitted new brake gear" - how did you make it Max ? It looks a complex structure. Oh and yes, it looks great. ____________________ 'Petermac |
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Spurno Owner/Webmaster. 
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Petermac wrote: Never mind "I've fitted new brake gear" - how did you make it Max ? It looks a complex structure. My thoughts exactly,how did you make it.Great work by the way Max. ____________________ Regards Alan Born beside the mighty GWR. |
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MaxSouthOz Admin
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Thanks, guys. It's a bit fraudulent, actually. I just copied Nigel's excellent photos. The booster is a piece of 5/16" styrene tube. It should have been 1/4" but I didn't notice it until I'd glued it in. It's a bit over scale. The "pipes" are 1/16" brass rod and the "hose" is 1 mm solder. The tapered cone and both tank ends are made from Knead It. It's a two pack polymer putty which sets hard, but which you can drill. I had to cut the steps away to get them in. I've rebuilt them, but I haven't had time to take another photo. Once the couplers arrive, I can add the cut lever and the MU hose. I seem to spend my life waiting for stuff. Anyway, I've started to build the roof. Photos in due course. Cheers ____________________ Max Port Elderley |
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BCDR Moderator
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Hi Max, That looks much better. More photo's of the hopper braking system below. It's no wonder these models cost $40 or more new. The trucks are off to show the details, I'm waiting for replacements (they are the sprung ones, new ones will be unsprung). I have a Bowser hopper model (from a kit) which has no brake piping or lever detailing, just the reservoir, AB valve and air brake cylinder, $15.00. Detail is expensive. On the roundtoit list (probably 50 cents of material and my time is free). Nigel Re what side? B end is on the right, airline pipe is at the bottom. Crossover is at the A end. Chains on end of brake levers would on the prototype link up with the brake shoe levers in the truck. Not modeled for obvious reasons in HO, you could probably do it in O. Just noticed the bottom left trap door frame needs a repair. I cut the levers from styrene sheet when adding brake gear to models that don't have it, and use staples for the guide bars. I believe the loops on the ends of the outside frame are for salvage lifting.  B end. Lever from air brake piston with connecting rod which runs through the bolster to the brake mechanism levers.  T'other end (the A end) showing airline pipe cross over above the coupler gear box.  A end from the top.  B end showing air brake lever running though bolster.  ____________________ ©Nigel C. Phillips |
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ZeldaTheSwordsman Madman 
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Max, your hopper looks excellent. Can't wait to see it completed. I bet ya even with the new supplier you'll have the roof and paint done before the couplers show up though. ____________________ My workbench, AKA an exercise in insanity 
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MaxSouthOz Admin
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Thanks, Nigel. That's very helpful. Thanks, Brendan. I've ordered them from P&D Hobby Shop, where I got my drive train parts for my Weaver GP 38. http://www.pdhobbyshop.com ____________________ Max Port Elderley |
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MaxSouthOz Admin
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Not up to Nigel's standard, but I reckon I'll pass.  I notice that P&D have debited my card, so the couplers are on their way. ____________________ Max Port Elderley |
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| This is topic ID = 14158 Current time is 12:51 am | Page: 1 2 3 4 5 6 7 8 ... |
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