Stuart D10 compound build

• Stuart D10 compound build
  Posted by Scorpion2nz on 18 Nov, 2019 01:18
• 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 .
  
  [ Guests cannot view attachments ]
  
  [ Guests cannot view attachments ]
  
• 
  
• #1 Reply
  Posted by Raphael on 18 Nov, 2019 01:59
• 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 ?
  https://www.youtube.com/watch?v=8tpREH2SVi0
  And the Stuart compound is also 90 :
  https://www.youtube.com/watch?v=FIR4SS4qDDw
• 
  
• #2 Reply
  Posted by Scorpion2nz on 18 Nov, 2019 02:38
• 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
• 
  
• #3 Reply
  Posted by RedRyder on 18 Nov, 2019 05:23
• The receiver is usually the pipe running from hp exhaust to lp inlet.
• 
  
• #4 Reply
  Posted by Scorpion2nz on 18 Nov, 2019 10:06
• Quote from: RedRyder on 18 Nov, 2019 05:23

  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
• 
  
• #5 Reply
  Posted by crazydoug on 18 Nov, 2019 11:29
• Good start, despite the crankshaft hiccup! Still lots of work ahead-please continue keeping us filled in on your progress.
  crazydoug
• 
  
• #6 Reply
  Posted by Raphael on 18 Nov, 2019 12:05
• Bonjour Dennis,
  I envy you because you build while taking into account the remarks. I can't wait to see the next steps 
• 
  
• #7 Reply
  Posted by Scorpion2nz on 18 Nov, 2019 14:17
• 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
• 
  
• #8 Reply
  Posted by Raphael on 18 Nov, 2019 14:21
• Bonjour Dennis,
  On my triple expansion, I added a steam input pipe going to the medium piston to help he reverse :
  https://www.youtube.com/watch?v=KPt0ouL8kzc
  It was done on several size 1 machines.
• 
  
• #9 Reply
  Posted by RedRyder on 18 Nov, 2019 18:30
• Quote from: Scorpion2nz on 18 Nov, 2019 10:06

  Quote from: RedRyder on 18 Nov, 2019 05:23

  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
• 
  
• #10 Reply
  Posted by Nick on 18 Nov, 2019 22:16
• I'll be watching 
• 
  
• #11 Reply
  Posted by Scorpion2nz on 19 Nov, 2019 02:44
• Quote from: Nick on 18 Nov, 2019 22:16

  I'll be watching 
  

  
  You will be in for a long wait as I work slowly .
  
  Cheers
  Dennis
• 
  
• #12 Reply
  Posted by Scorpion2nz on 19 Nov, 2019 02:52
• 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 .
  
  [ Guests cannot view attachments ]
  
  [ Guests cannot view attachments ]
• 
  
• #13 Reply
  Posted by Swift Fox on 20 Nov, 2019 14:46
• A very interesting project Dennis!!
• 
  
• #14 Reply
  Posted by txlabman on 20 Nov, 2019 21:03
• Good luck Dennis.
  
  A challenging project for sure.
  
  Way beyond my skills.
•