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| Another New Locomotive https://www.rypn.org/forums/viewtopic.php?f=1&t=26765 |
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| Author: | david griner [ Sat Dec 06, 2008 11:37 am ] |
| Post subject: | Another New Locomotive |
Hello, Another new steam locomotive has been built from the rails up. This fine piece of work has come from the Meiningen Locomotive Shop in Germany. Yes, it's a German design, but steam is steam and this is a nice example. Apparently, the railway needs more motive power-----how great is that? Meiningen is one of the last complete steam builders and as can be seen on their site, it appears to be a quality shop. http://www.molli-bahn.de/Dampflokomotiv ... 295.0.html Respectfully, Dave Griner arizonamechanicalengineering.com |
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| Author: | Ron Travis [ Sat Dec 06, 2008 2:08 pm ] |
| Post subject: | Re: Another New Locomotive |
That sure is interesting work seeing all those parts being made and coming together. It is somewhat surprising to see a drafting board and track drafting machine in the photos. |
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| Author: | tomgears [ Sat Dec 06, 2008 10:18 pm ] |
| Post subject: | Re: Another New Locomotive |
Very good news. Newly produced steam will help keep steam going for generations. |
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| Author: | Ed Walters [ Sun Dec 07, 2008 5:31 pm ] |
| Post subject: | Re: Another New Locomotive |
Interesting to see that the cylinders are fabricated! Cheaper than making the patterns for casting, and presumably substantially lighter too. |
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| Author: | mjanssen [ Tue Dec 09, 2008 4:07 am ] |
| Post subject: | Re: Another New Locomotive |
This is the same shop that built the LNER Peppercorn Class A1 boiler a few years ago. I wonder if they could build a boiler for the PRR 1361? |
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| Author: | whodom [ Tue Dec 09, 2008 7:25 am ] |
| Post subject: | Re: Another New Locomotive |
mjanssen wrote: This is the same shop that built the LNER Peppercorn Class A1 boiler a few years ago. I wonder if they could build a boiler for the PRR 1361? I'm sure they could if someone could afford to pay for it. |
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| Author: | tomgears [ Tue Dec 09, 2008 9:10 am ] |
| Post subject: | Re: Another New Locomotive |
In England they have worked out a way that supporters pledge a monthly payment to support ongoing projects. Here in the states we ask for donations and have levels of support; $100 - trainman, $200 brakeman, $300 engineer, $500 trainmaster. I wonder how it would work if organizations here tried to get a larger number of people to pledge $20 per month instead of going for the big once a year donation. This would provide a steady source of funding and in theory if you were able to keep adding folks as you go along it would grow at a steady rate. This might be the way to take on a K-4 project... or maybe a B&O pacific instead. :-) |
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| Author: | Dave [ Tue Dec 09, 2008 11:29 am ] |
| Post subject: | Re: Another New Locomotive |
I would note that the German locomotive was purchased by an operating railroad as an asset to be used to generate revenues, not a non-profit, publicly funded "Let's replicate a lost class" project. Very different circumstances. Also, adaptation of modern production techniques in replicating an old design is a wonderful demonstration of how it has never been easier or better technologically do build a new steam locomotive than it is today - economically, maybe not so much......unless one is in the happy circumstances of the Mecklenburg narrow gage. FW&W could benefit from their fabricated cylinder / saddle production techniques for their one-off repair job, relative to creating patterns for just one use. Perhaps if they sent the busted casting to Meiningen a new replacement fabrication could be returned to be bolted on? dave |
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| Author: | wilkinsd [ Tue Dec 09, 2008 12:10 pm ] |
| Post subject: | Re: Another New Locomotive |
The use of modern fabrication techniques in steam locomotive production have interested me. I know the PRR used fabricated cylinders and cylinder saddles, but did any other U.S. railroad or builder use the technique? I remember reading that the Pennsy used a large oven to heat the completed cylinders and saddle to relieve stress. Do you have to still do this today? I always theorizied that if steam locomotive production continued in the U.S., that the then high-tech casting technology would have given way to welding and fabrication of the "large bits" of a locomotive, including frames and cylinders. |
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| Author: | jasonsobczynski [ Tue Dec 09, 2008 12:43 pm ] |
| Post subject: | Re: Another New Locomotive |
Yes Dave! A weldment cylinder would be the way to go, recommend they contact Wasatch Railroad Contractors. Dave Griner has already designed a weldment cylinder for a much larger locomotive though it was never built. In regards to other locomotives having weldment cylinders, if my rememberer is working...the santa fe applied a weldment cylinder with ?poppet? valve gear (experimenting with modern valve gear design)to one of their 4-8-4s. |
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| Author: | Dave [ Tue Dec 09, 2008 1:17 pm ] |
| Post subject: | Re: Another New Locomotive |
Meiningen has already replaced the old cast cylinders on the rest of this class with fabricated assemblies. The Australian version of N&W 611, the 3800 class, were built with fabricated cylinder saddles. Nothing truly new about it - just postdated our steam era. Based on what I have heard about fabricated complex assemblies, I do believe stress relieving through controlled heat cycling is a very good idea. It is being done in even simple weldments, like replacing a chunk of boiler shell now. It has also been done with castings - the only warm place at Glover's in January was next to the annealing oven when we were baking out a new truckload of unfinished castings from the Cordele foundry. I'd wager there are several vendors that could provide it - but I don't know who in this country has had the specific experience found at Meiningen. I have a few ideas who not to call........ dave |
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