Holt 75 from Italy

Discussion in 'A Work In Progress' started by Foketry, Jan 6, 2019.

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  1. Jan 19, 2019 #41

    Foketry

    Foketry

    Foketry

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    IMG_7897.JPG IMG_7898.JPG

    Exaust manifold , roughing and finishing
     
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  2. Jan 19, 2019 #42

    kuhncw

    kuhncw

    kuhncw

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    You are doing very nice work. I enjoy seeing how you set the parts up for machining.

    Thanks.

    Chuck
     
  3. Jan 19, 2019 #43

    e.picler

    e.picler

    e.picler

    Edi from brazil

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    Hi Foketry!
    What CAm are you using? I also would like to know what CNC comand you have on your Milling machine. Is it Mach3?

    Edi
     
  4. Jan 21, 2019 #44

    e.picler

    e.picler

    e.picler

    Edi from brazil

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    You are making a fast progress.

    Edi
     
  5. Jan 21, 2019 #45

    Foketry

    Foketry

    Foketry

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    Hi Picler
    I used old Artcam and Mach3
     
  6. Jan 21, 2019 #46

    Foketry

    Foketry

    Foketry

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    the first phase of the intake manifold
     
  7. Jan 21, 2019 #47

    Foketry

    Foketry

    Foketry

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    The second phase of the intake manifold , i glued the manifold on a wood
    base and took the references on the central hole ,drilled in the first phase
    You can see a small displacement between the first and second phase.
    I corrected the profile with file .

    The challenge is to make internal holes and close them with welded aluminum caps ...
     
    Last edited: Jan 21, 2019
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  8. Jan 26, 2019 #48

    Foketry

    Foketry

    Foketry

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    IMG_8156.JPG IMG_8157.JPG
    The piston rings
     
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  9. Jan 26, 2019 #49

    Foketry

    Foketry

    Foketry

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    Piston ring grinding
     
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  10. Jan 27, 2019 #50

    Foketry

    Foketry

    Foketry

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    Flange grinding for exhaust and intake manifold
    To get the 4 flanges all on the same plane without flatness errors, I mounted a 12,000 rpm spindle motor on the milling machine and with the grinding wheel I finished the planes
     
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  11. Jan 27, 2019 #51

    Foketry

    Foketry

    Foketry

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    After grinding
     
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  12. Jan 29, 2019 #52

    e.picler

    e.picler

    e.picler

    Edi from brazil

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    Hi Foketry!
    Great job, you are making fast progress.
    At this pace, we will see it running pretty soon.

    Congratulations

    Edi
     
  13. Feb 19, 2019 #53

    Foketry

    Foketry

    Foketry

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    the water pump
     
  14. Feb 19, 2019 #54

    Foketry

    Foketry

    Foketry

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  15. Feb 19, 2019 #55

    Foketry

    Foketry

    Foketry

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    IMG_7970.JPG

    radiator assembly

    IMG_7971.JPG
     
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  16. Mar 5, 2019 #56

    Foketry

    Foketry

    Foketry

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    Finally the engine is running :):):):):):):):):):):):):):):):):):)

    With help of my friend Iader we have fine-tuned the timing and carburetion
    I used a small Rc model carburetor which , they told me , was more reliable than a self-built carburetor


     
    Last edited: Mar 5, 2019
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  17. Mar 5, 2019 #57

    johnmcc69

    johnmcc69

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    A beautiful display & great runner!

    Congratulations!

    John
     
  18. Mar 5, 2019 #58

    Johno1958

    Johno1958

    Johno1958

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    Love it. Great work.
    Cheers
    John
     
  19. Mar 6, 2019 #59

    kuhncw

    kuhncw

    kuhncw

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    Very well done. Congratulations. I especially like the low idle in the first part of the video. Sounds great.

    Chuck
     
  20. Mar 6, 2019 #60

    k2steve

    k2steve

    k2steve

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    I can't believe haw fast you completed a fantastic project as this. I really enjoyed you post of the build.
     

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