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My Workshop / Re: Zee's Shop Beginnings
« Last post by crueby on Today at 09:32:18 PM »
I am so bad at spelling I finally joined P.U.N.K.  For those not familiar it stands for People Who Can't Spell!

Thanks,

John


Perfect!!
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Vehicles & Models / Re: Chris' Build of a Lombard Hauler Engine
« Last post by Don1966 on Today at 09:27:06 PM »
Dog that is just to cool man. Did I say ....I........like........ :Love:



 :cheers:
Don
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My Workshop / Re: Zee's Shop Beginnings
« Last post by Walsheng on Today at 09:26:29 PM »
I am so bad at spelling I finally joined P.U.N.K.  For those not familiar it stands for People Who Can't Spell!

Thanks,

John
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From Kits/Castings / Re: Lane and Bodley 400hp Corliss
« Last post by sco on Today at 09:05:13 PM »
Thanks Kerrin and Vince.

Vince - they are not a spider but four pieces of setup shim that I have recycled from work.

Simon.
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Vehicles & Models / Re: Chris' Build of a Lombard Hauler Engine
« Last post by Dreeves on Today at 08:08:20 PM »
Chris, Very cool setup. I look forward to getting new up dates. keep up the good work

Dave
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Chatterbox / Re: How hot is for you
« Last post by Tennessee Whiskey on Today at 06:20:50 PM »
Rains and backlash from Cindy here. Raining to high Hell and back. Flash flooding and the whole nine yards. Tomorrow is supposed to be beautiful, if we make it through it

Cletus
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Chatterbox / Re: How hot is for you
« Last post by Doc on Today at 06:00:20 PM »
62f or about 16c here wind blwing about 30 t 40mph good day t work in the shop a little today!
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Vehicles & Models / Re: Chris' Build of a Lombard Hauler Engine
« Last post by crueby on Today at 05:11:24 PM »
The door hinges are done - most is made of some square bar stock, just the one piece that fits against the inside of the boiler shell had to be rounded on one side, using the rotary table on the mill.

Here are the end parts, one that is bolted to the door, the other that bolts to the boiler:

and in place with the horizontal members. Both ends can pivot, so the door can swing out then around to the side. This position is important, since it both gives the most access to the smoke box, and also will clear the angled support member that comes up from the front of the frame to the end of the smokebox.

And finally, the door swung closed:

All moves and fits well, so time to move on to the rest of the fittings and piping on the boiler...
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Chatterbox / Re: Talking Thermodynamics
« Last post by Dan Rowe on Today at 05:09:47 PM »
MJ and Andrew,
The book I mentioned by Ripper is the 4th edition. The main reason I mentioned it is the first edition of the book printed in 1899 was the first text to include a temperature-entropy chart. The introduction of the temperature-entropy chart was by Macfarlane Gray who read his paper at the meeting if the Institution of Mechanical Engineers in Paris July 1889.

As to starting a thread on Stephenson valve gear, I have one on the web already, unfortunately, it is behind a privacy screen on 7-8ths.info which is a 7/8" scale model RR forum. The good news is I have not built the Shay engine I did the study for and I will cover the topic here when I get to the engine.

I was on vacation for a few weeks and did not read some of this very carefully and I was not near my library. You determined that the usual steam pipe was too small for your design. The problem is the assumption of 2000 rpm. This is a very fast speed for a double acting engine. Most double acting steam engines are much slower. Locomotives run about 300 rpm and marine engines vary from about 120 rpm to around 750 rpm. The reason a double acting engine does not make a good choice for high rpm's is the piston pushes and pulls the con rod, if the bearings are not kept tight there will be a knock as the force changes direction. A single acting engine is much more suitable for high rpm's because the con rod force is always in the same direction. To get the same power out of a single acting engine compared to a double acting engine of the same bore and stroke, the single acting engine has to turn at twice the speed.

Dan
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My Workshop / Re: Zee's Shop Beginnings
« Last post by Tennessee Whiskey on Today at 05:04:28 PM »
Just typical Marv. Ranks right up there with Jesus and Congress  :lolb: :lolb:

Cletus
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