Office of Steam Forum for Model & Toy Steam Gas & Hot Air Engines
The Regular Stuff: Chat, Buy, Sell, Off Topic, etc. => General Discussion - Model & Toy Steam Engines – Stirling Cycle – Flame Lickers – Small Antique Originals => Topic started by: don6698@comcast.net on September 20, 2023, 09:36:53 am
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Gil—I used your suggestion and with 3 taps of my mallet and a little air and off it goes. Now running as a Maxwell Hemmens should
Great news, Don!
I'm glad you got it sorted.
Gil
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Gil—I used your suggestion and with 3 taps of my mallet and a little air and off it goes. Now running as a Maxwell Hemmens should
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Hi - I had exactly the same problem.
The slider was fitted too precisely and then jammed.
I had to open the slider box and take out the slide and cut off a bit with a file.
Now the D-valve can touch the port face fully.
The Maxwell Hemmens steam engine are very precisely made and they
have no "play" - better to loosen a bit.
Good luck and congrats for this nice one.
Arnold ;D
Could AI bot beat that? +1 for humans ( and office of).
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Hi - I had exactly the same problem.
The slider was fitted too precisely and then jammed.
I had to open the slider box and take out the slide and cut off a bit with a file.
Now the D-valve can touch the port face fully.
The Maxwell Hemmens steam engine are very precisely made and they
have no "play" - better to loosen a bit.
Good luck and congrats for this nice one.
Arnold ;D
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Good Luck!
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It might be as simple as the D-Valve falling away from the port face. If this is the case tipping the engine so the steam chest cover is pointing straight up followed by a couple gentle taps with a wood handle or small rubber mallet and give it some air while it is still tilted on it's side.
Best of luck with your very nice looking engine.
Gil
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Bonjour,
I fully agree with Stoker by feeding the machine with WD40 or equivalent because I have noticed that, using a 480 thick oil and using rarely my mechines, the side valves do not stick back properly after a while.
Generally speaking, I solve this problem just by putting a higher pressure, 3-4 bar / 45 - 60 PSI on them.
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That can happen if your D-valve is a bit gummed up with old steam oil. I would suggest first trying some light degumming type solvent/lubricant/penetrant such as Break Free (PCL or equivalent) shot down the exhaust port to loosen it up a bit. Heck, even WD 40 would probably do the trick if that is in fact what the problem actually is that you are experiencing. If that doesn't work after a little while, then you are going to need to open up the steam chest to see what's going on in there.
Nice engine BTW, hope that helps and is actually all the problem that you are having.
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Please help me get my house Maxwell Hemmens engine running. When I put compressed air in it the air comes right back out of the outlet. There is no movement. The engine is a bit stiff. Thanks!