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Old 12-13-2017, 08:57 PM   #1
dennisa49
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Default Small steam engine

Hello, I would like to build a small steam engine to fit in a model of a tugboat.
I was sure I had seen plans on the site, canít track them down though.
The engine would need to be no bigger then 50mm x 50mm externally. However a smaller engine would wonderful if possible.
Any link or suggestion would be much appreciated.
Thank you and regards,
Dennis


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Old 12-14-2017, 02:14 AM   #2
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Hi dennisa. I feel like this is the standard answer to the ďsmall steam engine plansĒ question but you could check out John Tomís site http://www.john-tom.com/html/SteamPlans.html probably something on there you could use. In the section with Elmer Verburg Engines http://www.john-tom.com/html/ElmersEngines.html there is a small Open Column with reverse that might work for you. The plans are imperial but the base plate is only 2 7/16Ē (61.9mm) x 1Ē (25.4mm)
http://www.john-tom.com/ElmersEngine...nColumnRev.pdf


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Old 12-14-2017, 03:38 PM   #3
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Quote:
Originally Posted by dennisa49 View Post
Hello, I would like to build a small steam engine to fit in a model of a tugboat.
I was sure I had seen plans on the site, canít track them down though.
The engine would need to be no bigger then 50mm x 50mm externally. However a smaller engine would wonderful if possible.
Any link or suggestion would be much appreciated.
Thank you and regards,
Dennis
Ray Hasbrouck designed a small 2 cylinder engine for such a purpose. The advantage of his design is that you can switch from full forward to full reverse by moving the reverse lever only 90 degrees. Perfect for RC servos to reverse the engine.

It might be a little large for your purposes, but I've seen people shrink his designs.

You can find the design in a book from Village Press, (and also available on Amazon)

https://secure.villagepress.com/stor...tail/item/2612
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Old 12-14-2017, 08:12 PM   #4
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Recently made this 3/8 bore and stroke DA twin from Malcom Beaks drawing they canbe found on the Paddleducks site. The engine is known as the MB22
http://www.homemodelenginemachinist....ad.php?t=26845
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Old 12-14-2017, 08:24 PM   #5
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Default Thank you

Thanks for the info.
John-Tomís site is very helpful.
I need to scale the boat design up a little to accept a slightly
bigger engine. No real problem there.
It is good to receive informed advice,
regards, Dennis


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