Office of Steam Forum for Model & Toy Steam Gas & Hot Air Engines
Builds, Repairs, Show Your Machines! => Collections & Pictures => Topic started by: Gregowen on September 06, 2021, 09:56:09 pm
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Thanks Nick for the photos, they match my unit precisely, right down to the brass gaskets. Also solves the mystery of the the S/50 brass plate. The same plate was glued onto the valve chest of my engine, of course I had no idea that it had any direct association with the governor. Is a bit worse for wear and so I did not put it back, I prefer to leave it off for now, but will be sure to always keep it with the engine.
Paula, thanks for the tip on the lubricator, that is the way I received it, have not run it on steam yet but will take your advice if I do!
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Nice pics, Nick! Do you know the diameter of the balls on that governor?
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Greg,
Great thread, thanks for posting the pictures. The S50 is such a classic design, and a lovely engine. Two nice examples!
One minor point on the black engine, it's a rather odd mounting for the displacement lubricator. I believe they need to be mounted vertically, with the condensate drain valve down. But it doesn't matter, unless you're running on steam.
Paula
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Here’s some pics of a NOS John Coleman governor for the S50. THe little brass plate is upside down and just says S50. At the time when I bought this one, they were bring $200-250 on ebay
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The ball governors on this engine should work pretty well and a variation was sold for the PM #7 too.
It's a pity that the plans weren't sold to PM or another company as I wouldn't mind making a couple of these for upcoming engines.
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Very nice looking engines, well done Greg!
@Dennis
Took a second round for me as well ;D
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Now I look closely i can see the extra brass below the steam chest cover
So now i can see how it works
Cheers
Dennis
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Thanks Gil for confirming the ID on my S50 governor. Nick, I would be interested to see photos of yours also, thanks.
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Hi Dennis, John Coleman also designed the valve body for the governor. It is the extra layer of brass that makes the steam chest look deeper than a standard Stuart S-50. He shipped them worldwide and his ebay handle was steamchest.
Gil
I have a NOS governor from John Coleman that I can get a picture of in a few days…
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Thanks to all for the comments.
Gil, good to know the likely source of the governor itself. The engine came from England, but if your friend was offering them for that long, then no doubt some would have ended up there (maybe even more than anywhere else). It is certainly a fine piece of craftsmanship. I have only seen a few S50 models with governors, apparently Stuart does not make them specifically for the S50 today, but maybe they did in years past.
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Hi Greg, Stuart never provided a governor for the S-50. It is 100% John Coleman's work. John was a very good model engineer
Gil
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Hi Dennis, John Coleman also designed the valve body for the governor. It is the extra layer of brass that makes the steam chest look deeper than a standard Stuart S-50. He shipped them worldwide and his ebay handle was steamchest.
Gil
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Ok so the governor is functional .
I am at a loss as to how .
I am not doubting you but obviously i need to do more homework as to how they work
Cheers
Dennis
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The governor is fully functional, does its job well, but could still use some further fine-tuning at this point.
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A couple of nice engines
From what i can see the governor is only for looks and non functional
Cheers
Dennis
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Very nice models. Good work.
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Thanks to all for the comments.
Gil, good to know the likely source of the governor itself. The engine came from England, but if your friend was offering them for that long, then no doubt some would have ended up there (maybe even more than anywhere else). It is certainly a fine piece of craftsmanship. I have only seen a few S50 models with governors, apparently Stuart does not make them specifically for the S50 today, but maybe they did in years past.
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Hi Greg, thanks for showing the engines here.
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Nice looking engines! Next in the build queue for me is a Stuart S50 and I'm looking forward to the build.
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Hi Greg, Nice work and they look great!
The governor looks like one made by John Coleman, a friend who passed away about 10 years ago. He produced them along with some very nice S-50's. He sold the governor on a complete engine and as a ready to install kit. This set-up was his own design. He made them for 5-7 years before passing.
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Two Stuart S50 engines, the green one I have had for a long time but it needed a lot of work, the black one I acquired only very recently, and it prompted me to finally get around to attending to the first one. Required a third donor S50, as the original driveshaft on the green one was bent, along with plenty of other issues and parts swaps. Fortunately the black one required nothing more than a good cleaning, it was covered with a layer of dried steam oil residue, which had protected it well (it had clearly seen a lot of run time). Both are now absolutely tight and smooth runners, the black runs on barely a puff of air. I believe that both are older models, having the bronze cylinders and valve chests.
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