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Post by Ed Hume on Apr 17, 2014 9:17:14 GMT -5
New Shay
Cylinder cock Plug Connecting Shafts (7) and (8) in Figure 22-9 on page 210.
Kozo's length values seem to be 2mm short for both shafts. I compute theoretical lengths of 22.65 and 32.65 mm. I think most folks would make the parts based on actual measurements so the drawing values are not so important.
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Post by daveb1 on Apr 18, 2014 8:22:55 GMT -5
Thanks Ed, that's good to know. I'm almost there. Are you building the new shay?
Dave
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Post by Ed Hume on Apr 18, 2014 10:02:29 GMT -5
Yes, indeed, I am working on the drain cocks now. It has been over five years. I am scaling the model as 3ft NG for gauge 1 (45mm) track. I have posted over 500 photos of the build on flickr plus another album on making the boiler. www.flickr.com/photos/edhume3/sets/72157614192042835/
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Post by Ed Hume on May 5, 2014 9:55:55 GMT -5
New Shay
Cylinder Drain Cocks Plug Shaft (6), Fig 22-9 on page 210. The drawing shows the pin hole as perpendicular to the tab base that the rods are soldered to. The drawing of Fig 22-18 on page 213 correctly shows that the pin hole is aligned with the tab base.
I chose to drill this hole before assembly as I did not see a good way to hold part (6) assembled to the drain cock.
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Post by pkastagehand on Feb 18, 2015 19:50:10 GMT -5
I'm not sure if this is a mistake or just me misunderstanding the relationships. Just made the exhaust nozzle. When I tried it in the "tee" it only goes in part way. Started looking at book and find the bottom of the nozzle is 13/32 to the shoulder. The "tee" is only threaded 5/16 deep. So apparently the nozzle does not fit all the way down to its shoulder but only goes in as far as the thread engagement allows (5/16"). Is this right?
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Post by silversanjuan on Feb 19, 2015 9:53:46 GMT -5
I don't have the book in front of me right now. But if I recall correctly, the nozzle goes through the block at the bottom of the smokebox and then into the tee. That will make up for the difference in length of the threads on the nozzle and depth of the hole in the tee.
Todd
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Post by pkastagehand on Feb 21, 2015 19:22:17 GMT -5
I don't have the book in front of me right now. But if I recall correctly, the nozzle goes through the block at the bottom of the smokebox and then into the tee. That will make up for the difference in length of the threads on the nozzle and depth of the hole in the tee. Todd Doh!! I was trying it direct because I have the smoke box off at the moment. Makes sense. I'll have to test it with smoke box back in place. Thanks! I figured it would be something simple I missed. Paul
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