Author Topic: Another MEM Corliss (in .40 scale)  (Read 5659 times)

Offline b.lindsey

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Re: Another MEM Corliss (in .40 scale)
« Reply #60 on: July 21, 2018, 06:37:53 PM »
What a great picture George!! Really coming together.

Bill

Offline crueby

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Re: Another MEM Corliss (in .40 scale)
« Reply #61 on: July 21, 2018, 07:43:16 PM »
More stunning work!

Offline cfellows

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Re: Another MEM Corliss (in .40 scale)
« Reply #62 on: July 22, 2018, 04:09:29 AM »
Hey George, love what your doing here.  Just curious why you didn't make the cylinder assembly out of brass?

Chuck
So many projects, so little time...

Offline gbritnell

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Re: Another MEM Corliss (in .40 scale)
« Reply #63 on: July 26, 2018, 02:47:05 PM »
Hi Chuck,
My thought was if I made any one of the major parts from brass I would have had to make all of them from brass, crosshead guide, flywheel etc. so I went with steel and then made the moving parts, piston, crosshead etc. from brass.
I have all the valve linkage for the cylinder made so I assembled it to see what it looks like.
Talent unshared is talent wasted.

Offline cfellows

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Re: Another MEM Corliss (in .40 scale)
« Reply #64 on: July 26, 2018, 04:13:07 PM »
The steel looks good.  Iíve been contemplating some additional steel parts on my Maudslay to match the flywheel... maybe the base.
So many projects, so little time...

Offline zeeprogrammer

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Re: Another MEM Corliss (in .40 scale)
« Reply #65 on: July 26, 2018, 04:15:36 PM »
That second picture says it all. Wow.  :o
Carl (aka Zee) Will sometimes respond to 'hey' but never 'hey you'.
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Zee-Another Thread Trasher.

Offline crueby

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Re: Another MEM Corliss (in .40 scale)
« Reply #66 on: July 26, 2018, 08:06:07 PM »
Oh. My.


 :praise2:

Offline Ye-Ole Steam Dude

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Re: Another MEM Corliss (in .40 scale)
« Reply #67 on: July 26, 2018, 08:40:56 PM »
Hello George,

Your work is beyond comprehension. Tell you what I did, I went and took a penny out of my change bowl and brought it back to the computer and tried to get a sense of what you have created. Just wonderful to see, thank you.

Have a great day,
Thomas

Offline Kim

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Re: Another MEM Corliss (in .40 scale)
« Reply #68 on: July 26, 2018, 08:51:47 PM »
Truly amazing, George!
Kim

Offline vcutajar

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Re: Another MEM Corliss (in .40 scale)
« Reply #69 on: July 26, 2018, 09:34:02 PM »
OMG   :praise2: :praise2:

Vince

Offline Ramon

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Re: Another MEM Corliss (in .40 scale)
« Reply #70 on: July 26, 2018, 10:48:28 PM »
I've been wondering George if I should try to make the linkage on my Corliss build more scale like - now I know I have to  :o

Absolutely superb workmanship :praise2: :praise2: and truly wonderful miniaturisation.

Can't wait to see that working for sure  :ThumbsUp: :ThumbsUp:

Tug
"I ain't here for the long time but I am here for a good time"
(a very apt phrase - thanks to a well meaning MEM friend)

Offline Craig DeShong

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Re: Another MEM Corliss (in .40 scale)
« Reply #71 on: July 28, 2018, 09:32:37 PM »
Words fail me.   :popcorn: :popcorn: :popcorn:
Craig

Offline gbritnell

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Re: Another MEM Corliss (in .40 scale)
« Reply #72 on: July 30, 2018, 02:48:14 PM »
Thank you one and all for the gracious comments. I enjoy presenting my work to my peers. Our community is shrinking so it's great to share and discuss on forums like this.
Attached is a picture of the throttling valve I just made. The body was turned with the neck and hexes machined toward the valve handle. The center hole was drilled for a M1.2 shaft. The barrel is .156 diameter was machined as part of the stem. The input tube was machined with the hex to simulate part of the valve body. The tube and flange going to the engine was machined the same way with the hex. I put counterbores in the body to accept these pieces by soft soldering them together. When ready I put a dab of flux and a small sliver of solder at the joint then heated the assembly up until I saw the solder wet. The problem is it wicked down to the valve and when it cooled the valve stem was soldered solid. I then heated it back up to release the valve stem. I polished all the solder from the bore and the valve head then coated it with a light film of oil upon assembly. I then heated the part again counting on the solder that had already flowed onto the valve body to fuse the pieces together, which it did.
I cleaned up the excess solder with an Exacto knife then polished the valve and handle.
The black mark on the valve handle is the wide open position. The valve handle is .375 diameter.
Talent unshared is talent wasted.

Offline gbritnell

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Re: Another MEM Corliss (in .40 scale)
« Reply #73 on: August 01, 2018, 02:58:00 PM »
I'm continuing with the build of the Corliss. I completed the Walnut base and mounted the engine to it. I put fluting on the stanchions to add a little character. 
Talent unshared is talent wasted.

Offline gbritnell

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Re: Another MEM Corliss (in .40 scale)
« Reply #74 on: August 01, 2018, 03:02:51 PM »
Next up will be a governor. It won't control the valve linkage like the larger versions but I thought it would look neat spinning away while the engine was running.
I drew something up that looked somewhat to scale and the miter gears came out to 72 D.P. I had a cutter made up for a project years ago and it was close enough to the proper width for the small end of the tooth. The gears have 16 teeth and are .243 O.D.
Talent unshared is talent wasted.