HR27 Ringbom revisted

Discussion in 'A Work In Progress' started by fcheslop, Sep 13, 2018.

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  1. Sep 13, 2018 #1

    fcheslop

    fcheslop

    fcheslop

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    Hi, not a blow by blow build thread just simply a few bits n bobs as I go
    I made this engine a few years ago but used it and a Moriya as a swap for some 2inch Ericsson casting that had seen better day.This build has reached a stage of never ending fettling and just needed a break and used to simply like the way this Ringbom just gently tapped away .
    The first job was to cut the hot cap from a test tube and a spare as Im sure to crack at least one
    The glass cutter is from a design by Jan Ridders with a few mods to use what I had in stock and has worked well for years
    So a little start has been made I need to learn how to place pics in text
    best wishes
     

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  2. Sep 14, 2018 #2

    fcheslop

    fcheslop

    fcheslop

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    Next up is the upright
    I dont have DRO kit fitted to my machines and to be blunt the machine is that worn its just not worth the effort to fit
    So the part was marked out just so I can see if Iv made a blunder as Im drilling the holes from a reference and counting the feed screw turns
    PIC_0011.JPG PIC_0013.JPG PIC_0015.JPG
    Next up will be the bearing housing and as I dont have the correct bearings Im going to increase the housings dia just to use what I have. It has been roughly clocked in
    cheers
     
  3. Sep 14, 2018 #3

    fcheslop

    fcheslop

    fcheslop

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    The main bearing housing was bored to give a light sliding fit for the bearings then faced.This will be the bolting flange as I now know its square to the bore
    The part was then glued onto a mandrel and the rest of the machining done
    PIC_0018.JPG PIC_0020.JPG PIC_0022.JPG
    So the first two parts now bolt together
     
  4. Sep 14, 2018 #4

    fcheslop

    fcheslop

    fcheslop

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    Sorry left pic out
    PIC_0024.JPG PIC_0026.JPG PIC_0028.JPG
    A start has been made on the heat sink
     
  5. Sep 15, 2018 #5

    fcheslop

    fcheslop

    fcheslop

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    The heat sink was bored to fit the test tube and a departure from the drawings Iv fitted an O ring seal as I simply dont like gluing the tubes into the unit
    This was then glued onto a mandrel and the fins turned using a cross slide depth stop as it saves me at least from over shooting on the depth
    Then onto the base and just used a router cutter to form the edge although it will need a bit of cleaning up it worked well enough for me
    PIC_0030.JPG PIC_0031.JPG PIC_0033.JPG PIC_0034.JPG
     
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  6. Sep 16, 2018 #6

    fcheslop

    fcheslop

    fcheslop

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    The power cylinder and piston
    Astart on the burner simply using a 28mm to 15mm copper pipe reducer and a bit of shim brass for the base friction turned
    PIC_0035.JPG PIC_0036.JPG PIC_0038.JPG PIC_0037.JPG
     
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  7. Sep 16, 2018 #7

    fcheslop

    fcheslop

    fcheslop

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    Once the burner was finished and its position found the base was set up on the face plate and machined
    The hot cap fitted after making a simple alloy displacor
    PIC_0041.JPG PIC_0039.JPG
     
  8. Sep 16, 2018 #8

    fcheslop

    fcheslop

    fcheslop

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    So we have a runner
    Guess thats all .Iv not gone into a lot of detail as it simply takes me too long for a subject that has little interest but if you have any questions Im only to happy to try and answer them
    The engine just needs a bit of bling then she can join the collection

    kind regards
    frazer
     
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  9. Sep 17, 2018 at 12:17 AM #9

    fuddy699

    fuddy699

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    it may not seem that no one is following but i have been watching this build from the start , my time to start doing is not for a couple of years , but this site keeps me going . i also follow brian every day . you guy's are way beyond me but hope to catch up
     
  10. Sep 17, 2018 at 5:52 AM #10

    ZebDog

    ZebDog

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    i have built a couple of stirling engines but not a ringbom well done and runs great congrats
     
  11. Sep 17, 2018 at 8:58 AM #11

    Cogsy

    Cogsy

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    Very nice. Well done.
     
  12. Sep 17, 2018 at 9:22 AM #12

    minh-thanh

    minh-thanh

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    That's cool !
    It seems very easy to run
    I have a question: plan for it ?? :D:D:D
     
  13. Sep 17, 2018 at 12:45 PM #13

    fcheslop

    fcheslop

    fcheslop

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    Many thanks for the kind comments
    The book is still in print although Im sure with a few basic measurements it would be easy to design youre own
    cheers
     

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