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Author Topic: Huff and Puff steam engine (very Tiny)  (Read 428 times)

gbritnell

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Huff and Puff steam engine (very Tiny)
« on: April 09, 2019, 06:29:53 pm »
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Huff and Puff (Tiny)
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Gentlemen,
While I was waiting for aluminum to be delivered I needed something to keep my hands occupied. When the thread about the Huff and Puff steam engine was started by Doc I went to the link to have a look at the original that Phillip Duclos created. I took all the dimensions and as has become my habit I scaled them down to 3/4 of the actual dimensions. That gave a bore and stroke of .1875 x .094. The small hex bolts that hold the front head and the cylinder to the base are M1.0 x .25 and the bolts that connect the rod and valve strap are M.08 x .20 (.032 diameter) The base is .785 long and overall it's 1.25 long.
I built everything to the drawings and it would barely run so I had a look at the valve and changed the timing on it. [ Guests cannot view attachments ] [ Guests cannot view attachments ] [ Guests cannot view attachments ] [ Guests cannot view attachments ] [ Guests cannot view attachments ] [ Guests cannot view attachments ] [ Guests cannot view attachments ] [ Guests cannot view attachments ] [ Guests cannot view attachments ] [ Guests cannot view attachments ] [ Guests cannot view attachments ] [ Guests cannot view attachments ] [ Guests cannot view attachments ] [ Guests cannot view attachments ]
It will run by breath but just barely although I had it well oiled for running on the video.
gbritnell
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Nick

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Re: Huff and Puff steam engine (very Tiny)
« Reply #1 on: April 09, 2019, 10:34:58 pm »
This is Awesome!  8)
Nick

SlowArrow

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Re: Huff and Puff steam engine (very Tiny)
« Reply #2 on: April 09, 2019, 11:06:22 pm »
Nice little engine.
Mike

Swift Fox

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Re: Huff and Puff steam engine (very Tiny)
« Reply #3 on: April 10, 2019, 03:34:35 am »
Wow George you certainly have a flair for the miniature stuff!, one of those would sit very well among my other tiny engines.  ;)
Your nose is before your eyes, so trust it first!

RON

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Re: Huff and Puff steam engine (very Tiny)
« Reply #4 on: April 10, 2019, 03:54:36 am »
That is fantastic really wish i could make something like that just hard to believe excellent

MasonvilleEngines

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Re: Huff and Puff steam engine (very Tiny)
« Reply #5 on: April 11, 2019, 04:20:14 am »
Saw it running on YouTube, Nice!

Len.

classixs

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Re: Huff and Puff steam engine (very Tiny)
« Reply #6 on: April 11, 2019, 09:09:28 am »
This is Awesome!

Couldn´t word it better, what an amazing job you did there
Cheers
Jan
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gbritnell

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Re: Huff and Puff steam engine (very Tiny)
« Reply #7 on: April 20, 2019, 08:02:20 am »
I made the horizontal so that just begged for a vertical. The same dimensions for all the parts except the base, lower cylinder head and uprights. The uprights are threaded M1.2 x .25 at the top and tapped the same size at the bottom. They are held from underneath by screws.
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Stoker

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Re: Huff and Puff steam engine (very Tiny)
« Reply #8 on: April 20, 2019, 09:12:00 am »
What I'd like to know is where in the heck did you find such a large penny?!?!   ;c)
"Information is not knowledge, Knowledge is not wisdom, Wisdom is not truth, Truth is not beauty, Beauty is not love, Love is not music: Music is THE BEST...   
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KNO3

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Re: Huff and Puff steam engine (very Tiny)
« Reply #9 on: April 21, 2019, 02:32:02 am »
The upright engine looks very scale. Where is the exhaust, through the piston valve?

gbritnell

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Re: Huff and Puff steam engine (very Tiny)
« Reply #10 on: April 21, 2019, 06:15:25 am »
Yes, there is a center groove for the intake that aligns with one or the other of the ports. At the ends there is a flat that uncovers the opposite port for the exhaust cycle.
gbritnell
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txlabman

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Re: Huff and Puff steam engine (very Tiny)
« Reply #11 on: April 26, 2019, 09:09:25 pm »
Awesome George.

Gil mentioned that you may be exhibiting one or both of these tomorrow.

Looking forward to meeting you tomorrow at NAMES.

Roscoe

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Re: Huff and Puff steam engine (very Tiny)
« Reply #12 on: May 06, 2019, 10:46:36 pm »
Miniature engines always amaze me, nice job.
John

Jim

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Re: Huff and Puff steam engine (very Tiny)
« Reply #13 on: May 06, 2019, 10:50:16 pm »
George your machining skills are just incredible. Do you magnifying aids when you are machining your miniatures?
_______________________________________________
Cheers.
Jim

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