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Thread: The Bucket Foundry

  1. #4981
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    22nd November 2013 - 16:32
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    While there was some discussion on ESE re transfer passages, I though that the location of these to the main central core in the mould is important and how to do it. Fletto obviously has his methods, but here is a way as well that we were involved in.

    These were done on the basis that the main core incorporates both the exhaust and inlet passages, obviously for a piston port engine.

    The darker core is a shell moulding and is around 25 years old. Initially the transfer cores were located into reliefs in the central core, but this provided a poor location and innacuracy. So, these being CL linered engines, we got a finished ported liner, slightly bored it out such that it fitted neatly over the central core and shortened it such that reached to below the BDC position, and locating over the simple parallel sided divided exh passage. The provided a location for the transfer passage cores. Unfortunately I have no cores for these to show.

    The white (plaster) central core , for a 2 transfer port engine, is similar as is the location for the roof of the transfer cores. In this case, we 3D printed core boxes that incorporated an arc like wraparound extension to the core. This, in conjunction with the top end location produced an excellent alignment with the CNC machined ports in the liner.

    Obviously these are really simple examples.

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    "Success is the ability to go from one failure to another with no loss of enthusiasm.

  2. #4982
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    12th March 2010 - 16:56
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    More foundry stuff.
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  3. #4983
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    12th March 2010 - 16:56
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    Success for a change
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  4. #4984
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    25th March 2004 - 17:22
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    Still following this thread in awe.
    I've been told. Dreaming`s free.
    Think I'll go, back to sleep.
    Everybody listen, voices in my head
    Everybody listen, do yours say, what mine says?

  5. #4985
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    12th March 2010 - 16:56
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    Assembling water cores in another Subaru head.
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  6. #4986
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    Sides get guled in as final step so as to be able to blow loose sand out and view to see that all core are in place correctly.
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  7. #4987
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    Cool

    Same shit, different day. More EA81 heads and a rocket body. All in CC601, off for heat treatment tomorrow.
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  8. #4988
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    25th March 2004 - 17:22
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    Very Wallace and Grommet rocket.
    I've been told. Dreaming`s free.
    Think I'll go, back to sleep.
    Everybody listen, voices in my head
    Everybody listen, do yours say, what mine says?

  9. #4989
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    12th March 2010 - 16:56
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    Money box rocket, for the latest gandchild.
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  10. #4990
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    20th January 2010 - 14:41
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    Rocket Didnt Yowling (Mike ) cast one at the start of the thread?

    What was the reason for using the early Subrus Neil as a base where they were lighter?
    Or the bodies all rusted out before the engines died?
    Quote Originally Posted by Katman View Post
    I reminder distinctly .




    Kinky is using a feather. Perverted is using the whole chicken

  11. #4991
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    13th June 2010 - 17:47
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    What's the port layout on the Sub heads ? Looks like separate inlets but siamesed exhausts ? Or is one twisted around the corner of the head ?

  12. #4992
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    Exhaust port layout, needed to avoid the pushrods tunnels.
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  13. #4993
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    25th March 2004 - 17:22
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    Well the rocket is the coolest thing in this thread so far.
    I've been told. Dreaming`s free.
    Think I'll go, back to sleep.
    Everybody listen, voices in my head
    Everybody listen, do yours say, what mine says?

  14. #4994
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    22nd November 2013 - 16:32
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    Quote Originally Posted by F5 Dave View Post
    Well the rocket is the coolest thing in this thread so far.
    Putin will be shitting himself now....
    "Success is the ability to go from one failure to another with no loss of enthusiasm.

  15. #4995
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    20th January 2010 - 14:41
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    Quote Originally Posted by ken seeber View Post
    Putin will be shitting himself now....
    ethanol-powered jus like the V2 as well....
    Quote Originally Posted by Katman View Post
    I reminder distinctly .




    Kinky is using a feather. Perverted is using the whole chicken

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