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Old 02-22-2012, 06:18 PM   #1
shearwater
 
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Default Stuart Twin Launch Engine from set of castings

Hi all, this is my Stuart Twin Launch engine built from a set of castings,
the crankshaft is not included in the set or any of the reverse gear.
I made the crankshaft webs from 30mm dia ENiA and brazed them to
the silver steel shaft, I also scratch built the Scotch return flue boiler.



http://www.youtube.com/watch?v=NgS2U...ature=youtu.be

Edited to embed link - Arnold


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Old 02-22-2012, 07:29 PM   #2
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Default Re: Stuart Twin Launch Engine from set of castings

Hi shearwater

Welcome to HMEM!

That's quality-looking engine and boiler building you show in the video

Do you have a video of the engine running under steam ? - that would be great!

Kind regards, Arnold


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Old 02-22-2012, 08:11 PM   #3
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Default Re: Stuart Twin Launch Engine from set of castings

http://www.youtube.com/watch?v=ZTblV...ature=youtu.be
Hi Arnold, This is a video of the engine running on 20psi compressed air.
not easy on your own to hold camera and tacho, the flywheel is not running out its covered with black tape to get a tacho reading.
The boiler has been hydraulic tested to 160 psi and steamed with pressure relief valve set at 60 psi.

Mick


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Old 02-22-2012, 08:27 PM   #4
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Default Re: Stuart Twin Launch Engine from set of castings

Great pieces of work Shearwater. Did you work to a particular set of drawings for your boiler? I would love to see them as the unit appears to be very robust.

BC1
Jim
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Old 02-22-2012, 08:45 PM   #5
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Default Re: Stuart Twin Launch Engine from set of castings

Stunning as is the launch just wish I could build to that standard
best wishes Frazer
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Old 02-22-2012, 08:49 PM   #6
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Default Re: Stuart Twin Launch Engine from set of castings

Thanks for the video Mick

It runs well on air - I like the slow-speed running.

Keep us updated on your progress - the bits visible from the boat itself looks great as well!

Kind regards, Arnold
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Old 02-22-2012, 09:33 PM   #7
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Default Re: Stuart Twin Launch Engine from set of castings

Quote:
Originally Posted by bearcar1
Great pieces of work Shearwater. Did you work to a particular set of drawings for your boiler? I would love to see them as the unit appears to be very robust.

BC1
Jim
Hi Jim, I did not work from a set of plans, a very good friend of mine
a very experienced engine who has built many boilers and engines steered me in the right direction as this is only my second venture into
steam.

Regards Mick
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Old 02-22-2012, 09:38 PM   #8
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Default Re: Stuart Twin Launch Engine from set of castings

Quote:
Originally Posted by arnoldb
Thanks for the video Mick

It runs well on air - I like the slow-speed running.

Keep us updated on your progress - the bits visible from the boat itself looks great as well!

Kind regards, Arnold
Thanks for all your interest and comments.


http://www.youtube.com/watch?v=wAiRf...ature=youtu.be
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Old 02-22-2012, 10:09 PM   #9
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Default Re: Stuart Twin Launch Engine from set of castings

Dang that is sharp looking boat, engine and boiler. I am very impressed. I'm building a Stuart triple right now as my first engine and forray into metal working, and have an old Stuart twin launch casting kit being sent to me at the moment for my next engine. I think it will be some time before I consider making a boiler or a boat. Your pictures are quite inspirational.

Robin
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Old 02-26-2012, 08:23 AM   #10
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Default Re: Stuart Twin Launch Engine from set of castings

Great work mick, i followed the build closely on Mayhem


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