Stephens knuckle head build

Discussion in 'A Work In Progress' started by driller1432, Jul 22, 2015.

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  1. Jul 22, 2015 #1

    driller1432

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    Hello to all I'm currently building Jacks Knuckle Head V twin from the free plans that were generously provided for free. Many thanks to Jack👍🏽Here are some pics of what is done so far crank, rods, cylinders, pistons. Has anyone built this engine? Currently working on heads will post more pics soon.
    Steve
    View attachment ImageUploadedByModel Engines1437571557.461281.jpg View attachment ImageUploadedByModel Engines1437571578.975891.jpg View attachment ImageUploadedByModel Engines1437571595.008674.jpg [
    ATTACH]78056[/ATTACH]
     

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  2. Jul 22, 2015 #2

    jimjam66

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    Got the popcorn ready - will be following this build closely!
     
  3. Jul 22, 2015 #3

    Gerhardvienna

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    Seat in first row preserved, I`ll stay tuned!
    I love this old BigTwins, even as a model.
    Regards
    Gerhard
     
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  4. Sep 20, 2015 #4

    motorman46

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    Hi Steve, very nice work, I too will follow your build closely. I just found the plans and downloaded them yesterday. Jack did a fantastic job on the plans, and it is remarkable that he made them available for free. Please post pics and comments often. I am really excited to start this engine, but am in the middle of another build at present. I am know if I don't finish it first I'll never get back to it.
    Julian
     
  5. Sep 20, 2015 #5

    driller1432

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    Hey guys, almost have the heads completed. I'll get some pictures posted pretty quick. I moved to the heads before the crankcase because the heads seem to be the most challenging components to make. But I got them on first try with out screwing them up what a relief.
    Steve
     
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  6. Sep 20, 2015 #6

    stevehuckss396

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    Looking forward to seeing the photos!
     
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  7. Sep 30, 2015 #7

    Draw-Tech

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    Last edited: Oct 1, 2015
  8. Oct 2, 2015 #8

    driller1432

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  9. Oct 3, 2015 #9

    Draw-Tech

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    Hi Steve
    Can't believe the progress you have made, all your work is awesome, I have to do all with lots of handle cranking. If you need any help with the drawings, or find any oops, let me know.
    Jack
     
  10. Oct 5, 2015 #10

    driller1432

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  11. Oct 6, 2015 #11

    Draw-Tech

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    Hi Steve
    What can I say, let people know the size your dealing with. Put a quarter in the pictures, and we can see how accurate this model is. again GREAT WORK!!!

    Jack
     
  12. Oct 7, 2015 #12

    Chiptosser

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    Very Cool!!

    Where did I miss the plan offering?

    Always a pleasure to view other people's work.
     
  13. Oct 7, 2015 #13

    Draw-Tech

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    Hey Chiptosser
    You can download the plans on the download page.
    Jack
    draw-tech
     
  14. Oct 21, 2015 #14

    Rozlo

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    Oh wow very good work Steve. I just down loaded the plans also but like Jack it will be a lot of handle cranking for me. Good job fit and finish look great.
     
  15. Oct 22, 2015 #15

    driller1432

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    Thanks guys I too am a manual machinist, late 30s southbend 9 lathe grizzly mill with x power feed and dro. Here are photos of all pieces that were machined for heads 38 pieces per head not counting screws or springs. Assembled valve and springs in heads but springs coil bind with just about 1/16 valve opening so I'll have to take a bit more from floor of rocker box still lots of meat to work with. Then on to crankcase. View attachment ImageUploadedByModel Engines1445482760.496957.jpg View attachment ImageUploadedByModel Engines1445482781.112889.jpg View attachment ImageUploadedByModel Engines1445482802.746413.jpg View attachment ImageUploadedByModel Engines1445482832.179814.jpg
     
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  16. Oct 22, 2015 #16

    Draw-Tech

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    Hi Steve
    I can't believe you got so much done, do you ever sleep? Please try to keep track of any adjustments you may need to fix. I started printing the engine in plastic, I will post some more pics soon. Here's one of the cylinder.
    Jack

    DSCN1498.jpg
     
    Last edited: Oct 22, 2015
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  17. Nov 4, 2015 #17

    driller1432

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  18. Nov 5, 2015 #18

    Draw-Tech

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    I'm drooling!!!!
     
  19. Nov 24, 2015 #19

    driller1432

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  20. Nov 24, 2015 #20

    Davewild

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    Beautiful work, I have to build this!!!!
     

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