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Author Topic: Stuart S50 ressurection  (Read 260 times)

Steam Technology

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Stuart S50 ressurection
« on: August 13, 2019, 09:36:11 pm »
Resurecting an S50 from parts of various engines
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There is damage to the cylinder and mods to both covers as well as heap of stuff to fabricate.
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Plenty to be going on with then!!
Cheers. Dave.

Scorpion2nz

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Re: Stuart S50 ressurection
« Reply #1 on: August 14, 2019, 12:34:37 am »
I think I have  seen them before .
They look familiar

Cheers
Dennis

Steam Technology

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Re: Stuart S50 ressurection
« Reply #2 on: August 14, 2019, 05:32:03 pm »
I have repaired the cylinder and I have drilled out the sheared off studs
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This is an early bronze cylinder and the threaded holes are 3/32bsw which I will be converting to 7BA.
Piston rod & piston have been made
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The crosshead pivot was seized with rust & gunk so I dismantled. cleaned & reassembled it.
Then a temporary trial fit to make sure every lined up and turned over smoothly.
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There is an alignment issue with the cylinder mounting holes and the base due to these not being from the same engine but I will deal with that at a later date.
Cheers. Dave.

Jim

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Re: Stuart S50 ressurection
« Reply #3 on: August 14, 2019, 06:03:39 pm »
Watching with interest this resto.
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Cheers.
Jim

My YouTube Channel https://www.youtube.com/user/Blue123Heeler/videos


Hero

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Re: Stuart S50 ressurection
« Reply #4 on: August 14, 2019, 06:24:02 pm »
These are nice engines. I'll be watching carefully, and hope that it all works out well for you.
Bob

Steam Technology

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Re: Stuart S50 ressurection
« Reply #5 on: August 14, 2019, 11:53:48 pm »
The rear cylinder cover had been modified by a previous owner so I converted it into a front cover and will make a new rear cover.
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Dismantled it then fabricated the new parts as required
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Then a quick assembly just to check.
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Also made the packing gland for thr valve chest while I was at it.
Cheers. Dave.

Steam Technology

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Re: Stuart S50 ressurection
« Reply #6 on: August 15, 2019, 03:44:58 am »
Made the valve rod, valve and nut.
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Then on to the eccentric rod. I dismantled the engine so I could get the eccentric off to ensure the profile of the brass retaimer/follower was correct.
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I cleaned all parts before reassembly.
Then I turned the rod from 8mm bar which gave me the size at the end needed for the pivot.
Made the pivot block next.
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Then a trial fit up to set the lengths and sizes etc.
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With everything looking good all covers were fitted.
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Then curiosity got the better of me and I gave it a trial run on air. A short, rather poor quality video follows.

https://youtu.be/gsPogZ3Yhaw

I have exhaust3d my current supply of 7BA bolts so there are heaps of air leaks. Also as I have not decided whether to go with o ri gs ,oil grooves or packing, the piston is still a block so there will be blowby.
And I am not wholly comvinced that the timing is right despite the detent for the eccentric lock screw.
Anyhoo it works and there is a lot of fettling, fiddling, and finessing still to do.
Cheers. Dave.

Dr.Rev.DelmarMacReady

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Re: Stuart S50 ressurection
« Reply #7 on: August 15, 2019, 07:35:50 pm »
Coming along nicely. Great fun to watch your resto
Bennydaheeb

Scorpion2nz

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Re: Stuart S50 ressurection
« Reply #8 on: August 16, 2019, 12:54:27 am »
Great to see you have life in it .
Well done on resurrecting the reject parts from here .

Cheers
Dennis

Swift Fox

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Re: Stuart S50 ressurection
« Reply #9 on: August 16, 2019, 09:09:00 am »
Nice to see it back together and running, great that it has the bronze cylinder and valve chest.
Your nose is before your eyes, so trust it first!

Stoker

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Re: Stuart S50 ressurection
« Reply #10 on: August 16, 2019, 11:41:46 am »
Certainly inspiring to see this mish-mash of parts being brought together into an operational engine, and a Stuart 50 has long been a favorite of mine as it is a good scale representation of that which made the world go around during the industrial revolution!

Well done on this resurrection and truly hoping it proves to be as good a runner for you as my S50 is for me!
"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...   
Wisdom is the domain of the Wis (which is extinct). Beauty is a French phonetic corruption of a short cloth neck ornament currently in resurgence..."
F. Zappa ... by way of Mary, the girl from the bus.

Steam Technology

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Re: Stuart S50 ressurection
« Reply #11 on: August 16, 2019, 04:42:15 pm »
Thanks for all the encouraging comments. I am enjoying this project immensely.
Cheers. Dave.

Steam Technology

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Re: Stuart S50 ressurection
« Reply #12 on: August 25, 2019, 01:04:05 am »
 Nothing more done to the engine but another longer run on air.
https://youtu.be/cV9ATx8NAF0
Cheers. Dave.

txlabman

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Re: Stuart S50 ressurection
« Reply #13 on: August 25, 2019, 03:13:52 am »
I just read your Restoration Thread.

Some very nice work on this old Stuart S50.

What kind of lathe/milling machine are you using?

Steam Technology

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Re: Stuart S50 ressurection
« Reply #14 on: August 25, 2019, 04:28:14 am »
I just read your Restoration Thread.

Some very nice work on this old Stuart S50.

What kind of lathe/milling machine are you using?

Lathe is a small chinese model, as seen on ebay.
No mill, but lots of files and of course drill press, dremel etc.
Cheers. Dave.

 

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