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Post by Ruston92 on Dec 26, 2013 23:24:44 GMT
Enough about boilers! They bore me. I want cogs and other mechanical parts to be posted. Much more interesting than a glorified kettle.
Merry Christmas! (a bit belated but who cares)
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Post by wdiannes on Dec 27, 2013 0:22:36 GMT
LOL! I am working on that ruston921! Started patterns for the foundry.
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Post by wdiannes on Dec 27, 2013 17:59:00 GMT
Beyond boilers ..... Started on the patterns for the flywheel, idler gear, and wheels. Having never had a mill before, I find more and more ways to make things easier using a mill. When I last made spoked patterns, the space between each spoke had to be cut out by hand. Now it is far easier just to do it on the mill with the rotary table. A couple of patterns awaiting final sanding, paint, and varnish.
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Post by Roger on Dec 28, 2013 19:02:25 GMT
Having never had a mill before, I find more and more ways to make things easier using a mill. When I last made spoked patterns, the space between each spoke had to be cut out by hand. Now it is far easier just to do it on the mill with the rotary table. Presumably you'll cut the gears that way too if you've not already done those. You may find the attached utility useful in creating the list of angles for the teeth if you choose to do it that way. Attachments:AngleDivider.exe (1.37 MB)
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Post by Deleted on Dec 28, 2013 22:25:43 GMT
Hi matey----------- This has just been rejected by my Kaspersky Security.
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Post by Roger on Dec 28, 2013 23:26:32 GMT
Hi matey----------- This has just been rejected by my Kaspersky Security. That's probably because it's an executable so it's seen as potentially dangerous. I've just changed the extension from .exe to .oxe so it won't be seen as a threat. You will need to go to Folder Options on the View tab and uncheck the 'Hide extensions for known file types' so you can see the extension and then change it to .exe Attachments:AngleDivider.oxe (1.37 MB)
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Post by Deleted on Dec 28, 2013 23:33:10 GMT
I'll give that a try then..........Would a Dentist recommend it, do you think ??-------
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Post by Roger on Dec 29, 2013 0:05:59 GMT
I'll give that a try then..........Would a Dentist recommend it, do you think ??------- Possibly, if you want nice evenly spaced teeth for a perfectly geometric smile. Hollywood awaits....
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pault
Elder Statesman
Posts: 1,500
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Post by pault on Dec 29, 2013 10:32:52 GMT
Hi Dianne, Personally I would have put a bit of steel plate on the rotary table would save having a casting done, and you could be painting the finished artical now. I guess you could say casting these bits is a bit like the predecessor to laser cutting, Puts fingers in ears and takes cover
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shooter
Part of the e-furniture
If it 'aint broke....don't fix it!
Posts: 252
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Post by shooter on Dec 29, 2013 10:43:51 GMT
Ye gods pault, you sure know how to start the new year with a bang.;-)
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steam4ian
Elder Statesman
One good turn deserves another
Posts: 2,069
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Post by steam4ian on Dec 29, 2013 11:32:36 GMT
Paul
Dianne's mill looks like s Sieg X2, cutting the wooden patterns may be the limit of its capability.
Ian
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Post by wdiannes on Dec 29, 2013 13:31:18 GMT
Oh Ian, that's not nice! It is a Sieg X2 and it does very well for itself.
I considered having some of these parts laser cut in steel - have done it before and they did a wonderful job - but it isn't cheap. There are also 4 gears to cut and I would rather cut gears in cast iron than in steel.
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Post by Roger on Dec 29, 2013 15:22:05 GMT
Oh Ian, that's not nice! It is a Sieg X2 and it does very well for itself. I considered having some of these parts laser cut in steel - have done it before and they did a wonderful job - but it isn't cheap. There are also 4 gears to cut and I would rather cut gears in cast iron than in steel. I agree, it's going to be a whole lot easier cutting the gears in Cast Iron. It's worth getting them cast, just for that. They will also probably run more smoothly too.
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Post by wdiannes on Jan 2, 2014 15:08:39 GMT
I finally tracked down the club's test pump yesterday and got the plumbing sorted to connect it to the Trevithick boiler and did the hydrostatic this morning. No problem at all with 200 PSIG! I took it to 250 for awhile - also solid - and would have gone to 300 but didn't want to over-tax the club's test gauge. Even at 250 it is solid as a rock and you'd never know it was under pressure. I am happy Next step is to get the boiler cleaned up (pickled) and the next test for the boiler will be the steam test but that will have to wait until the water glass, hand pump, and some other parts come in. Back to making patterns I guess
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Post by Roger on Jan 2, 2014 15:19:31 GMT
Excellent! This is such an interesting project. I know it won't appeal to a lot of club members who's interest is in weekend passenger hauling, but I think this is of enormous historical interest. You could possible argue that it's the most important locomotive development of all. The leap from lumbering engines that were constructed as part of a house to this is truly vast.
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Post by wdiannes on Jan 2, 2014 15:45:04 GMT
I just finished reading Trevithick's biography and it is truly amazing all the innovations he came up with! If it hadn't been for his quick temper and if he had more "people skills", he would have changed the face of industry even more than he did.
I found it particularly interesting that the Coalbrookdale locomotive may have been so poorly documented because Trevithick faced so much criticism from 'the established authorities' for using "strong steam" and very shortly before testing the Coalbrookdale locomotive there had been an explosion of a "strong steam" boiler in another part of the country. Trevithick may well have chosen to be secretive about this locomotive to avoid further criticism.
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Post by Roger on Jan 2, 2014 16:32:11 GMT
I must get a copy of that, it sounds very interesting. Poor people skills seem to be inherent in a lot of characters who changed the world, and I suppose being out of step and dogmatic in their own beliefs is the only way that change ever happens. Just see the resistance to small steps like metric threads and CNC machine tools here and then imagine what it must be like to be truly radical! Most big advances are necessarily at the cutting edge of the day's technology and understanding, so failures and unreliability are always paraded as reasons for staying with old technology. Remember how unreliable electronic ignition and fuel injection was when it first came out. The same goes for the first transistors and integrated circuits. If you can just about make something work once, it can be made to work reliably almost all of the time with development.
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uuu
Elder Statesman
your message here...
Posts: 2,838
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Post by uuu on Jan 2, 2014 17:46:06 GMT
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Post by Deleted on Jan 2, 2014 18:20:45 GMT
Well done, DIANNE !!------- Now lets see, "Quick temper" and "Poor people skills"....... Sounds like I'm heading in the right direction then ??...That's right STRIPLAR, once a basic fundamental has been proven to be viable then it's only a matter of time before it has become an every-day item...given the will and the money !!.........3D Printing is the classic case for the immediate future I think ??......Yes, I'd like a copy also.. What's the ISBN please, Dianne ?? Might be something available via AMAZON
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Post by wdiannes on Jan 2, 2014 18:28:38 GMT
"Richard Trevithick, Giant of Steam" by Anthony Burton, Aurum Press, 2002. ISBN 1 85410 878 6
I got my copy through Amazon but from a U.K. seller and had to wait about 6 weeks for it.
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