Author Topic: Steam engine (Tiny horizontal double acting, maybe with reverse)  (Read 19729 times)

Offline gbritnell

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Steam engine (Tiny horizontal double acting, maybe with reverse)
« on: November 03, 2012, 07:44:44 PM »
Gentlemen,
One more engine in the 'Tiny' series. This time a horizontal version. I might even make it with a reverse mechanism. There was no way to cut the entire base from one piece so I layed out the base to see how I could make it in 2 pieces and still have it look like a casting, or 1 piece. By cuttting a slot in the base and recessing the side wall of the cylinder a little for it to overhang the top surface it almost looks like one piece. The cylinder is mounted with 2, 0-80 socket head screws from underneath.
gbritnell
Talent unshared is talent wasted.

Online Jo

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Re: Steam engine (Tiny horizontal double acting, maybe with reverse)
« Reply #1 on: November 03, 2012, 07:48:50 PM »
Wow George  8),

I am following this with great interest.

Jo
Enjoyment is more important than achievement.

Offline rebush

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Re: Steam engine (Tiny horizontal double acting, maybe with reverse)
« Reply #2 on: November 03, 2012, 08:11:04 PM »
George: Nicely done on such a small scale. Will be following along also. Thanks for posting your build. Roger
Hopelessly lost but making darn good time.

Offline zeeprogrammer

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Re: Steam engine (Tiny horizontal double acting, maybe with reverse)
« Reply #3 on: November 03, 2012, 08:34:44 PM »
I'll be watching too.
Is that cloth 1 or 2 tpi?
Carl (aka Zee) Will sometimes respond to 'hey' but never 'hey you'.
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Zee-Another Thread Trasher.

Offline Don1966

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Re: Steam engine (Tiny horizontal double acting, maybe with reverse)
« Reply #4 on: November 03, 2012, 09:11:59 PM »
Count me in on this one also George. I am pulling up a chair.

Don

Offline ScroungerLee

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Re: Steam engine (Tiny horizontal double acting, maybe with reverse)
« Reply #5 on: November 03, 2012, 09:13:41 PM »
 Oooh a new gbritnell project!  Cool!

Looking forward to more George.

Lee
Mmmmm.... Shiny!

Offline Bearcar1

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Re: Steam engine (Tiny horizontal double acting, maybe with reverse)
« Reply #6 on: November 03, 2012, 10:53:38 PM »
I do so much envy your eyesight, George. Wow, is all I can say.  :ThumbsUp:


BC1
Jim

Offline b.lindsey

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Re: Steam engine (Tiny horizontal double acting, maybe with reverse)
« Reply #7 on: November 03, 2012, 11:28:26 PM »
Have to agree with Jim, my eyes are strained just looking at the pictures. Another great project though George...you are on a roll!!!
Bil

Offline ProdEng

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Re: Steam engine (Tiny horizontal double acting, maybe with reverse)
« Reply #8 on: November 04, 2012, 01:08:46 AM »
Enjoy watching your progress with your tiny engines and seeing what is possible at such a small scale.
Jan in Perth

Offline Bezalel

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Re: Steam engine (Tiny horizontal double acting, maybe with reverse)
« Reply #9 on: November 04, 2012, 08:08:06 AM »
George


Your an inspiration.    :agree: :agree:


 I only wish I could achieve machining little parts like that.


  Alas! I fear I would be forever loosing them in the scratches in my bench top.


Thank you for sharing


Bez
Queensland - wet one day, humid the next

Offline NickG

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Re: Steam engine (Tiny horizontal double acting, maybe with reverse)
« Reply #10 on: November 04, 2012, 11:23:46 AM »
Brilliant - and I was joking when I mentioned a horizontal in the other thread!

Some of the horizontal castings I've noticed do have 2 base castings anyway.  :ThumbsUp:

Offline Captain Jerry

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Re: Steam engine (Tiny horizontal double acting, maybe with reverse)
« Reply #11 on: November 04, 2012, 12:37:32 PM »
That is amazing, George.  I like the cylinder mounting solution.  I can't imagine how you achieved the external curves with the ball end mill. Did you crank that in by eye, set up a pivot, or do it on an RT?  Is it magic? Or can you show us?

Jerry
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There are things that you can do and some things you can't do. Don't worry about it. try it anyway.

Online steamer

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Re: Steam engine (Tiny horizontal double acting, maybe with reverse)
« Reply #12 on: November 04, 2012, 12:45:04 PM »
Geez George!   I know how big a Schrader valve cap is!.........WOW!!!!!


 :NotWorthy: :NotWorthy: :NotWorthy: :NotWorthy: :NotWorthy: :NotWorthy:

Dave
"Mister M'Andrew, don't you think steam spoils romance at sea?"
Damned ijjit!

Offline gbritnell

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Re: Steam engine (Tiny horizontal double acting, maybe with reverse)
« Reply #13 on: November 05, 2012, 01:20:12 AM »
Gentlemen,
Here's today's update. I started on the cylinder. At first I thought ok, just another one of many but then I decided to make this one look like a casting instead of smooth like it had lagging on it. I started by turning  a piece of stock to get a true cut on the outside and boring the the cylinder bore.
From there the stock was moved to my dividing head. The trued up od. gives me a good surface to indicate and measure from. The valve face was cut first followed by milling off the radius by taking small steps.
Talent unshared is talent wasted.

Offline gbritnell

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Re: Steam engine (Tiny horizontal double acting, maybe with reverse)
« Reply #14 on: November 05, 2012, 01:23:00 AM »
The next steps were center drilling with a 00 center drill and drilling the appropriate holes for the valve chest holes and the ports.
Talent unshared is talent wasted.