Building My 2.5" 20 Ton Shay

Where users can chronicle their builds. Start one thread and continue to add on to it.

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Soot n' Cinders
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Re: Building My 2.5" 20 Ton Shay

Post by Soot n' Cinders » Thu Jul 26, 2018 10:03 pm

Its a hefty little shay for sure! I can only imagine how big the Ulin West Side Lumber shays are...
-Tristan

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-2.5" scale Class A 20 Ton Shay

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littleevan99
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Re: Building My 2.5" 20 Ton Shay

Post by littleevan99 » Thu Jul 26, 2018 11:07 pm

There’s a guy at the Golden Gate Live Steamers with a model of a 70 ton Shay in 2.5” scale, and it’s huge.
1.5" scale CliShay
2.5" 20 ton Shay under construction
YouTube: http://www.youtube.com/user/littleevan99

rkcarguy
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Re: Building My 2.5" 20 Ton Shay

Post by rkcarguy » Fri Jul 27, 2018 4:50 pm

I'm building a switcher in 2" scale. A couple weeks ago I wasn't really imagining the ultimate size of it until I cut the frame rails for it and they are 77" long, plus 4" on each end for the bulkheads and steps.
You've got to be looking at a 10' plus locomotive in 2-1/2" scale?

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FLSTEAM
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Re: Building My 2.5" 20 Ton Shay

Post by FLSTEAM » Fri Jul 27, 2018 7:20 pm

Actually the build is a little over 7 ft. over the running boards.

John B.
http://www.ngshay.com/
Shay drawings and castings

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littleevan99
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Re: Building My 2.5" 20 Ton Shay

Post by littleevan99 » Thu Aug 30, 2018 12:23 pm

It's been over a month since I have posted anything, and here's what I've gotten accomplished:

1: I got the frame rails all welded, ground, and machined to spec. Didn't count the number of 3/16" holes I had to drill, but it was a lot! Only pucker inducing moment was tapping the engine mounting holes in the frame, as the tap did not want to go through the holes without some considerable force even with Moly Dee.
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2: I managed to get the truss brackets finished, and those were a fun little project trying to get the angles to come out right, and then blending it all together on the belt sander, and with some emery cloth to clean up the little imperfections.
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3: Finally, I got the truss rod brackets for the frames all machined, and those were about as boring as wheels to machine. Each bracket had about .150" extra on the backs that had to be face off, and I didn't want to get the cast iron dust all over the mill so I had to turn them on the old lathe in the back of the shop that's been cutting cast its whole life. Needless to say they all turned out looking good, and that's what mattered the most.
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Well, that about sums up this months progress. Now I also have been tinkering with different stack designs that differ from John's diamond stack in the plans. So far I have scaled up a drawing from Narrow Gauge & Shortline Gazette that was for a 27 ton Class B Shay with the same boiler diameter as the Shay from the same magazine that John based his around. It's a tapered stack, and I'm sort of sure on how to make it, but it's going to take a huge chunk of steel to machine it as I have no castings for it. Another possibility is a Radley & Hunter, and I've seen over on Tristan's thread where he made a 2.5" scale mock up. I have the drawings for that from the State RR Museum, and that's anothe option if I so choose. The easiest one would be the tapered stack as it is just a big chunk of steel that needs to be wittled down. Either way that is a long time away before I need to decide.
1.5" scale CliShay
2.5" 20 ton Shay under construction
YouTube: http://www.youtube.com/user/littleevan99

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littleevan99
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Re: Building My 2.5" 20 Ton Shay

Post by littleevan99 » Fri Oct 12, 2018 12:14 am

Work, school, and the occasional train meet means working on the Shay's a little difficult! In the last month I've only made a few parts, and started on some others. So here's what I've got:
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These are the pilot beam brackets, and they were a quick afternoon project a few weekends ago.
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These are the brake beams for the Shay, and they were another project that didn't take too long to do. I'm really happy with how they turned out even if they aren't readily seen down in between the frame.

Aside from that I've been working on the queen posts, and I have the plates that mount to the frame finished. All that's left is to add the rod to it with the seat for the truss rod.
1.5" scale CliShay
2.5" 20 ton Shay under construction
YouTube: http://www.youtube.com/user/littleevan99

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Donhost4449
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Re: Building My 2.5" 20 Ton Shay

Post by Donhost4449 » Fri Oct 12, 2018 9:58 am

Nice to see the progress - thanks for sharing.

~Chris
Building a Fitchburg Northern (build log): www.chaski.org/homemachinist/viewtopic.php?f=45&t=107249

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Glenn Brooks
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Re: Building My 2.5" 20 Ton Shay

Post by Glenn Brooks » Fri Oct 12, 2018 7:19 pm

Hi, nice work! What size materials did you select for the frame?

Thanks
Glenn
Moderator - Grand Scale Forum

Motive power : 1902 A.S.Campbell 4-4-0 American - 12 5/8" gauge, 1955 Ottaway 4-4-0 American 12" gauge

Ahaha, Retirement: the good life - drifting endlessly on a Sea of projects....

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littleevan99
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Re: Building My 2.5" 20 Ton Shay

Post by littleevan99 » Sat Oct 13, 2018 12:24 am

The frame is made from 2” x 1/2” channel thats was welded back to back to look like I beam.
1.5" scale CliShay
2.5" 20 ton Shay under construction
YouTube: http://www.youtube.com/user/littleevan99

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