Demon V8 (multiplied 1.5)

Discussion in 'A Work In Progress' started by Foketry, Sep 24, 2019.

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  1. Nov 25, 2019 #61

    Foketry

    Foketry

    Foketry

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    The final check on motor block

    IMG_8904.JPG
     
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  2. Nov 25, 2019 #62

    awake

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    Very impressive work!

    I'd love to know more about how you use the block with the five holes in picture 8898. I assume it lets you do the offsets for the various cranks, but I'm not clear on how you would line things up - unless there are matching centers in the opposite end of the crank shaft?
     
  3. Nov 25, 2019 #63

    stevehuckss396

    stevehuckss396

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    Very nice! That grinder looks like it would come in handy.
     
  4. Nov 26, 2019 #64

    Foketry

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    yes, as you think , on the opposite side there are the same matching centers for cranks
    The screw you see in the photo is to drag the crankshaft through the lathe chuck
     
  5. Nov 26, 2019 #65

    xpylonracer

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    Is that wood packing between the crankwebs ?
     
  6. Nov 27, 2019 #66

    Foketry

    Foketry

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    yes, it is hardwood glued with epoxy
     
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  7. Nov 27, 2019 #67

    awake

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    Understood. Thanks!
     
  8. Dec 2, 2019 at 11:44 PM #68

    Foketry

    Foketry

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    The valves, made from a stainless steel bar


    IMG_8918.JPG
     
  9. Dec 2, 2019 at 11:48 PM #69

    Foketry

    Foketry

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    the steel chips produced by one valve

    IMG_8923.JPG
     
  10. Dec 2, 2019 at 11:51 PM #70

    Foketry

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    all the valves +3

    IMG_8944.JPG
     
    Last edited: Dec 4, 2019 at 12:25 AM
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  11. Dec 3, 2019 at 2:30 AM #71

    awake

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    It's hard to express just how impressive that picture is.

    It might seem simple enough. I can imagine some <clueless> person saying, "it's just 17 little rod thingies, right?" Oh, yeah - "just" 17 *identical* pieces, representing hours upon hours upon hours of exacting work, that's all!

    I'm feeling daunted at the prospect of making 2 valves for my first IC engine attempt. I see this picture and I'm in awe!
     
  12. Dec 3, 2019 at 6:14 AM #72

    Michael Rosenbauer

    Michael Rosenbauer

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    Why do you make 19 valves?
    But as usual at your pictures, very very nice. What do you thing you are finished and running the V8.
    Is it a x-mas gift for somebody?:D
     
  13. Dec 4, 2019 at 12:06 AM #73

    Foketry

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    I worked one day to make the first 2 valves, scraps, I found the right tool with a very small tip radius, many small turning steps of 0,2 -0,3 mm to avoid bending the valve , in total about 4 days to get 19 valves
     
  14. Dec 4, 2019 at 12:23 AM #74

    Foketry

    Foketry

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    better to have some spare parts, when I assemble the valves in the seats and do the vacuum test, if there are any leaks, I replace them
    If all goes well, I hope to hear the first bursts at the end of January / February :)
     

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