12" working railroad

Discuss park gauge trains and large scale miniature railways having track gauges from 8" to 24" gauge and designed at scales of 2" to the foot or greater - whether modeled for personal use, or purpose built for amusement park operation or private railroading.

Moderators: Glenn Brooks, Harold_V

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Topics may include: antique park gauge train restoration, preservation, and history; building new grand scale equipment from scratch; large scale miniature railway construction, maintenance, and safe operation; fallen flags; track, gauge, and equipment standards; grand scale vendor offerings; and, compiling an on-line motive power roster.
rkcarguy
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Location: Wa State

Re: 12" working railroad

Post by rkcarguy » Mon May 06, 2019 9:41 pm

Just need to tap the holes in the ends of the tanks and bottom(condensate drains) 1/8 NPT and this fabrication is finally done.
mufflerairtanks.jpg

rkcarguy
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Location: Wa State

Re: 12" working railroad

Post by rkcarguy » Thu May 09, 2019 3:32 pm

I got the angles finished (I don't know what they are called), with some detail and mounted them.
Attachments
S12pilot1.jpg
S12pilot2.jpg

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NP317
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Re: 12" working railroad

Post by NP317 » Thu May 09, 2019 10:38 pm

Footboards?
~RN

rkcarguy
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Location: Wa State

Re: 12" working railroad

Post by rkcarguy » Fri May 10, 2019 10:09 am

Yeah I guess so. I did my own thing here compared to a fabricated/bolted frame S12. The bolted seam is usually further up the pilot, but would have required a large lap seam or to have the lower steps bolt onto this part of the pilot. This way I can remove the angles and repair and repaint them, or replace them entirely if I find a way to make 1/6th scale grating :)

rkcarguy
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Location: Wa State

Re: 12" working railroad

Post by rkcarguy » Mon May 13, 2019 10:07 pm

The wheels aren't going to turn themselves, so I figured it was time to get started on them.
The laser cut wheel blanks are pretty accurate, I was able to chuck them up on the outside and just finish ream the last .015" out of the hole with a .998" reamer with no noticeable wobble. These are the 6-5/8" diameter blanks for my riding car.
lathe1.jpg
Then I grabbed a chunk of 3" round stock from the rem shelf to use for my hub for turning wheels. This lathe is a beast, I took ~3/16" depths of cut whittling that end down closer to 1" and then drilled and power tapped the hole 5/8" NC.
Next it will go in the mill for a drive dog bolt hole, and then when I am ready to turn the wheels I will turn the hub to the final diameter and not remove it from the chuck so everything spins true.
lathe2.jpg

Glenn Brooks
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Re: 12" working railroad

Post by Glenn Brooks » Tue May 14, 2019 12:39 am

Nice set up. If the rest of us were so fortunate!
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....

rkcarguy
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Location: Wa State

Re: 12" working railroad

Post by rkcarguy » Tue May 14, 2019 12:47 am

It's not mine obviously, perks of my workplace :D

rkcarguy
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Location: Wa State

Re: 12" working railroad

Post by rkcarguy » Thu May 16, 2019 2:02 am

I made a fixture from a bolt and a scrap of flat stock for drilling a drive bolt hole in my wheels so they don't spin on the hub.
wheelfixture1.jpg

rkcarguy
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Re: 12" working railroad

Post by rkcarguy » Mon May 20, 2019 10:33 pm

I turned 8 wheels tonight for the riding car. Not completely though, I will press them onto the axles and then turn the tapers after that.
Pics coming if they ever send to my email....

rkcarguy
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Location: Wa State

Re: 12" working railroad

Post by rkcarguy » Tue May 21, 2019 12:36 pm

Here are some pictures. Loving the power on this lathe. 1 cut for the 6-1/2" overall diameter, 2 roughing passes and one finish pass for the 6" wheel surface. Less than 10 minutes each once I get all the dials setup.
Next step I'm going to turn the recess in the face of each wheel, then press them on the axles.
wheellathe3.jpg
wheellathe2.jpg

rkcarguy
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Location: Wa State

Re: 12" working railroad

Post by rkcarguy » Thu May 23, 2019 10:54 pm

The flanges and gaskets got cut for the muffler, I welded the flange on and this is finally done!
I chucked the hub up in the lathe again and turned the faces of all my wheels so they have a little bit of recess just for looks.
Surprisingly the hub only had about .001" total run-out when chucked back up in the 3-jaw, so I put some marks on both of them to align the right jaw with the hub next time.
Included a picture of the lathe I have access to, a big thanks to my workplace for being able to use this monster.
mufflercomplete.jpg
wheels6.0.jpg
BigLathe.jpg

Glenn Brooks
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Re: 12" working railroad

Post by Glenn Brooks » Fri May 24, 2019 12:02 am

That’s a big boy, right enuf! Gives new meaning to hobby shop work...
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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