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Author Topic: Diamond Rock 0-4-0 3 foot tank engine  (Read 9871 times)
Scratchman
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« on: February 08, 2018, 11:37:07 PM »

Diamond Rock 0-4-0 narrow-gauge tank engine

 This is my twentieth 1:16 scale steam engine. My first two, the Michigan-California Shay #2 and The Kahuku Baldwin 1890 were built in the the early seventies. All the others were built after 2000 in my current work shop.

Diamond Rock 0-4-0 narrow-gauge tank engine. The plans are in the Oct. 1971 Model Railroader. This locomotive is representative of Baldwin Locomotive Works class 4-11C, a 3-foot-gauge Saddle tank 0-4-0 design. The engines in this class had 28” diameter drivers
9x14”cylinders were supplied with steam from the boiler at a pressure of 150 pounds per square inch.inch9x14”cylinders were supplied with steam from the boiler at a pressure of 150 pounds per square inch. He engine was rated at tractive effort of 5160 pounds based on a fully loaded weight 24,000 pounds. The saddle tank had a capacity of 300 gallons of water. Coal was carried on the cab floor and on a small flat car coupled behind the engine. There is no record of such an engine having been built for Diamond Rock Sand Co. However, for purposes of  lettered for such a company. Three- foot- gauge industrial lines were common and such power would be well suited for use on them.
https://saveitforparts.wordpress.com/projects/lesser-known-and-obscure-railroads-of-alaska/



This photo shows the Model Railroader plans  laying on top of my working plan on ( 24x18 inch 4 squares to the  inch  Quad paper.) with some of the different parts and build-up parts that I’ll use for this model. The brass castings are from Track Side Detail  and the white metal parts are from Ozark Miniatures some of the brass parts will be used only for pattern.(injectors) (brake valve) (lubricator).


The jig holds the front and rear pilot beams  between the two pilot beam I fit the cab and boiler section to that I add the frame and  running gear section. This section makes contact with the  four wheel – jig. The rear of the two side frame – side frames on fire box. The cylinder saddles – bottom of smoke box, The front of the two side frame – front pilot beam.





The bottom casting for the steam and sand dome were modified to fit the larger diameter of the water tank.

Gordon Birrell

https://www.flickr.com/photos/gordonbirrell/
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finescalerr
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« Reply #1 on: February 09, 2018, 02:26:39 AM »

I remember those plans. So far your model looks extremely adequate. -- Russ
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Design-HSB
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« Reply #2 on: February 10, 2018, 03:28:49 PM »

Gordon, the model looks good, but are the domes already finished?
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Regards Helmut
the journey is the goal
lab-dad
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« Reply #3 on: February 10, 2018, 04:18:00 PM »

One of these is on my "to do" list.
I better take notes!

Marty
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TRAINS1941
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« Reply #4 on: February 10, 2018, 05:08:20 PM »

Beautiful work Gordon.

Jerry
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Chuck Doan
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« Reply #5 on: February 10, 2018, 06:04:02 PM »

Yea! Always great to see one of your projects under way Gordon!
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Scratchman
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« Reply #6 on: February 11, 2018, 01:01:37 PM »

 Thanks guys for your comments
Helmut, what are you seeing? I’m not real happy with the center section not having a smaller diameter than the top and bottom, and  I’m good with the flange on the bottom.
 


Gordon Birrell

https://www.flickr.com/photos/gordonbirrell/
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Barney
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« Reply #7 on: February 11, 2018, 02:16:25 PM »

Very nice - lovely detail
Barney
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Ray Dunakin
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« Reply #8 on: February 12, 2018, 01:17:49 AM »

Wow, another great project off to a good start!
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« Reply #9 on: February 12, 2018, 10:11:24 AM »

Gordon, This project is another good one! Will you number her 20 in recognition of all the 1:16 locomotives you have built?
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lab-dad
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« Reply #10 on: February 14, 2018, 08:24:25 AM »

Gordon,
How good are the MRR "plans"?
Care to share a copy?.... Huh

Marty
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« Reply #11 on: February 15, 2018, 03:59:48 PM »

Helmut, what are you seeing? I’m not real happy with the center section not having a smaller diameter than the top and bottom, and  I’m good with the flange on the bottom.
Hi Gordon,

I noticed this distance between the saddle tank and the steam dome. If you have a chance to reduce it, maybe you can grind the steam dome on a cylinder of appropriate diameter.

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Regards Helmut
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« Reply #12 on: February 16, 2018, 12:41:17 PM »

Helmut, thanks for getting back to my question. I looked at that approach to the problem   but my ability is limited and that approach was not workable.

Marty, I picked this loco to build because the plans showed a little more detail than most. The plan I had from the magazine was destroyed. My brother is also a model railroader and had a copy of 75 years of Model Railroader and printed out a copy of page 42 Oct. 71. Send a PM with your address and I will send you a copy of my copy.

Gordon Birrell   .

https://www.flickr.com/photos/gordonbirrell/
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« Reply #13 on: February 16, 2018, 01:50:04 PM »

Hallo Gordon,

now there is still the possibility of the lower part of the steam dome to re-sign and allow in 3D printing, only characters I can not do something like that unfortunately.
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Regards Helmut
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finescalerr
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« Reply #14 on: February 16, 2018, 02:03:01 PM »

Gordon, if you need a 3-D drawing just ask one of us to help. -- Russ
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