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Author Topic: Stuart D10 compound build  (Read 8799 times)

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Stuart D10 compound build
« on: November 18, 2019, 01:18:02 am »
This will probally be a exercise in futility.
A incomplete set of Stuart D10 castings .
I will endeavour to make a compound .
 Base trued and done complete with a milling hiccup,. ( not a great start )
New 180* crank shaft made , need to drill and taper ream then shape .
Bearing essentials done just need cosmetic finishes ..
Stand and trunk guide done .
The plates between trunk guide and cylinder are missing this was solved by finding some steel rod in junk box .
.it is  turned and fitted to trunk guide and the piston  rod gland box threaded etc .

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Re: Stuart D10 compound build
« Reply #1 on: November 18, 2019, 01:59:37 am »
Bonjour Scorpion,
Great project indeed that I will follow with a great interest. First question, why a 180° crankshaft ? The one I bought are 90 ?

And the Stuart compound is also 90 :
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Raphaël, Membre du Modèle Yacht Club de Paris : http://mycparis.fr/
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Re: Stuart D10 compound build
« Reply #2 on: November 18, 2019, 02:38:44 am »
Good evening Raphael,

After some research my understanding is direct coupled steam for 180* crank but if 90* then a receiver is needed ie a tank between cylinders .
I could be wrong as per usual

Cheers
Dennis
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Re: Stuart D10 compound build
« Reply #3 on: November 18, 2019, 05:23:25 am »
The receiver is usually the pipe running from hp exhaust to lp inlet.
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Re: Stuart D10 compound build
« Reply #4 on: November 18, 2019, 10:06:49 am »
Quote from: RedRyder on November 18, 2019, 05:23:25 am
The receiver is usually the pipe running from hp exhaust to lp inlet.

So i have stuffed up before i even started  ! That would be usual .

Cheers
Dennis
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Re: Stuart D10 compound build
« Reply #5 on: November 18, 2019, 11:29:03 am »
Good start, despite the crankshaft hiccup! Still lots of work ahead-please continue keeping us filled in on your progress.
crazydoug
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Re: Stuart D10 compound build
« Reply #6 on: November 18, 2019, 12:05:20 pm »
Bonjour Dennis,
I envy you because you build while taking into account the remarks. I can't wait to see the next steps  ;)
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Raphaël, Membre du Modèle Yacht Club de Paris : http://mycparis.fr/
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Re: Stuart D10 compound build
« Reply #7 on: November 18, 2019, 02:17:07 pm »
Well i been thinking ( shock horror )  while milking  cows this morning .
As the crank shaft has not been drilled and pin in place yet I can still make it 90*
With a little persuasion . Use a bigger steam line as receiver .
This will make it self starting ( hopefully )
And as i have received plans for the reversing gear which will be made from bar stock .
I am going to be busy for a while .
Cheers
Dennis
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Re: Stuart D10 compound build
« Reply #8 on: November 18, 2019, 02:21:27 pm »
Bonjour Dennis,
On my triple expansion, I added a steam input pipe going to the medium piston to help he reverse :

It was done on several size 1 machines.
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Raphaël, Membre du Modèle Yacht Club de Paris : http://mycparis.fr/
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Re: Stuart D10 compound build
« Reply #9 on: November 18, 2019, 06:30:20 pm »
Quote from: Scorpion2nz on November 18, 2019, 10:06:49 am
Quote from: RedRyder on November 18, 2019, 05:23:25 am
The receiver is usually the pipe running from hp exhaust to lp inlet.

So i have stuffed up before i even started  ! That would be usual .

Cheers
Dennis


Not stuffed..... just wandered off course a little... all while having fun!


Keep up the good work and thank you for keeping us updated!


Gil
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Re: Stuart D10 compound build
« Reply #10 on: November 18, 2019, 10:16:43 pm »
I'll be watching  :)
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Nick

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Re: Stuart D10 compound build
« Reply #11 on: November 19, 2019, 02:44:27 am »
Quote from: Nick on November 18, 2019, 10:16:43 pm
I'll be watching  :)

You will be in for a long wait as I work slowly .

Cheers
Dennis
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Re: Stuart D10 compound build
« Reply #12 on: November 19, 2019, 02:52:53 am »
A little bit of progress made .
One cylinder bored to maximum.
One cylinder bore roughly then sleeved with brass .
Brass was chilled and cylinder heated then pressed in .
Then  2.  1/8th by 40 tpi holes drilled and threaded through cast iron into the brass sleeve .
Brass rods soldered in place . This will prevent the sleeve ever shifting
Then final boring done .

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Re: Stuart D10 compound build
« Reply #13 on: November 20, 2019, 02:46:49 pm »
A very interesting project Dennis!!
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Your nose is before your eyes, so trust it first!

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Re: Stuart D10 compound build
« Reply #14 on: November 20, 2019, 09:03:59 pm »
Good luck Dennis.

A challenging project for sure.

Way beyond my skills.
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