Recent Posts

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Specific Engine Help / Re: Steam engine suffering from hydraulic lock
« Last post by Zephyrin on Today at 09:24:46 AM »
Without drain cocks, it would be very difficult to make this engine running on steam...

I would first heat the engine up to about 100c before opening the steam valve, the point is this large mass of metal will immediately condense incoming steam if too cold.

Even with cylinder drain plugs, it takes about 15 min of efforts to get my largest engine (40mm bore x 70mm stroke) running freely, and to have escaping steam trough the exhaust and not water !
Of course, a blow with an hot air gun on the steam chest and cylinder shorten this delay.
As soon as my engine slows down, condensing occurs, and water is gurgling in exhaust tube, because the boiler is poorly efficient and cannot reaches pressure above 2 bar to provide higher temp steam...
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Specific Engine Help / Re: Steam engine suffering from hydraulic lock
« Last post by Jasonb on Today at 07:28:03 AM »
There is no drain on the chest so it would make no difference, exhaust is coming out of the cylinder which could not be turned upside down.
3
From Plans / Re: Vince's version of the Monitor Steam Engine
« Last post by vcutajar on Today at 04:59:54 AM »
Thanks Achim.  Best of luck on your Hoglet.

Vince
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Specific Engine Help / Re: Steam engine suffering from hydraulic lock
« Last post by Pete49 on Today at 03:09:25 AM »
dumb comment I know but as you bought it do you think the steam chest is upside down. It seems logical to place a drain underneath, wellto me anyhow.
5
From Plans / Re: How about a Rupnow Vertical Engine
« Last post by Sleddog on December 10, 2017, 11:36:14 PM »
Thanks for the comments guys...Brian, I'm from South East South Dakota.

Started on the frame. 1" holes drilled for the 1/2" radius. Located, drilled for camshaft & crankshaft. Also bored for crankshaft bearing. I drilled then reamed a .375 hole so when I flip the frame over I'll be able to indicate & bore in the correct location. After that operation is complete I'll drill to finish size as indicated on the plans.



I discovered my indicating plates are not the correct ones for my table! :o



The plates have 4 mounting holes & the table has 3!



So, I'll have to wait for the correct plates to arrive before the gear cutting gets underway. There's plenty else to keep me busy.


Thanks again,

Jack






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Your Own Design / Re: Bugatti Typ 50 1/4 Scale model
« Last post by BillTodd on December 10, 2017, 09:18:29 PM »
I'll see what i can find in the scrap bin ;-)
how long are your plug insulators ?
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Your Own Design / Re: Model Compressor---Maybe
« Last post by Brian Rupnow on December 10, 2017, 09:00:16 PM »
It has been a snowy miserable weekend here and good wife has a cold, so I've spent more time than usual playing in my machine shop. The compressor is taking shape and beginning to look like the 3D model. The gears do mesh, and the pistons do slide back and forth, although somewhat reluctantly. I will finish up the baseplate and the drive disc that moves the yoke back and forth tomorrow, and then a bit of 'running in' on my bench set-up to loosen things up a bit. Once I get it moving freely, I will start on the 4 valves.
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Your Own Design / Re: Bugatti Typ 50 1/4 Scale model
« Last post by michelko on December 10, 2017, 08:48:54 PM »
Hi Bill,
many thanks for the kind offer. I live in germany.
If you have some pieces i would gladly take them.
Of course i will pay for the postage.

Regards Michael
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From Plans / Re: How about a Rupnow Vertical Engine
« Last post by Brian Rupnow on December 10, 2017, 08:44:06 PM »
Sleddog--very nice start to the engine. I'm always glad to see an engine I designed coming to life. Where abouts are you in the world.---Brian
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From Plans / Re: Hoglet, an European Version
« Last post by vcutajar on December 10, 2017, 08:28:35 PM »
Quote
the first Hoglet running as a single cylinder.

I am sure you will quickly find the reason why you lost compression on the other cylinder and it will run even better.

Vince
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