Thread: Building A looper Beast

  1. #141
    Team Member R Austin's Avatar
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    I went on line last week to check out and could not find. Ater running thru a couple of pages, it caught the corner of my eye in the top sticky lines. Now shows up on every page.

    Thanks Dick

  2. #142
    Team Member R Austin's Avatar
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    Now that the exhaust TEST elbow has been completed and a minor mod made to the core, they have now been cast and out for heat treating. Had talked to WISECO and was informed the the completion date had been moved out to 4-18. So with that I set the block in the mill on 30 degree angle blocks to remove .100 in of material from the apex of the inside radius of the transfer corner. That will be the top of a 11/32 inch radius making the hand grinding more controlable and with the use of a 11/32 inside radius gauge on size. After one side of the block was completed I set up to make transfer inserts for a cylinder pair set. Using a bicycle inner tube, cut in half and glued, I ran thur the passages to form a base insert that could be trimmed to make the correct entrance angles. One cylinder is shown with the inserts in place. After that , material was added to the outside, four sides that are all tapered, reducing the insert depth that will be increased with the aluminum shrinkage. After casting they will be fitted to each position. Because all were machined, they should not require a lot of fitting work. That pattern was taken to the foundry when picking up the completed exhaust elbows and have been cast and out for heat treat.


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  3. #143
    Team Member R Austin's Avatar
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    Will add a few pics of the progress. Now behind after a short stint in the hospital and trying to get back up to speed. Have lots of work to do now. Working on the exhaust elbows that I had started 2 weeks ago. Trying to get them done and out of the way. Pistons showed up from Wiseco, thats a good thing and made as requested. So now the only thing required is time and that gets harder to find now that we have something that resembles spring.


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  4. #144
    Team Member BJuby's Avatar
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    Curious, but is there a difference between the wider sweeping elbows and the "quicker" sweeping elbows? I know the wider ones were the later style right? But I see that the ones you had made are the earlier style? Why is this?

  5. #145
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    What can you say but....... Wow!

    Any chance you might demo "The Beast" at Hillsdale?

    Tim

  6. #146
    Team Member Gene East's Avatar
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    Sorry to hear you have had some health issues, but glad to hear your back making chips. Too bad you didn't save all the chips. The pile would have been impressive.

    I had forgotten you intended to use dual ignition until I looked through the bottom of the block in your latest post and saw two spark plugs.

    Many, many people want to see this thing run. Just be careful. This masterpiece deserves to live and breath like any fine engine, but it is too precious (yes that's the word, precious) to risk destruction.

    The classic boaters have a meet in Quincy in September.

    It would be great to have the "Beast" visit the home town of it's ancestors!

  7. #147
    Team Member R Austin's Avatar
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    A few more pics of the exhaust elbow progress.

    Also a comparision of the Quincy eblows and the Beast elbow. Why did I use the tighter elbow design? The most important part of the exhaust path is the first inch or two. Ideally slopped downward and out from the cylinder head. The Quincy design being a siamees port is already compromised. I went straight out to get a reasonable divider in the elbow between the cylinders. Secondly, I did not want a frontal area the width of the door on a house. Once the exhaust is out of the block and in the tube, its shape is irrelavent. The tube needs to remain constant to the point of defusion. All three pipes have the same centerline lenght from flange. The exhaust port area is larger than the Quincy requireing a larger section at the flange. The flange itself is, of course, much larger. Those are the reasons the use of the Quincy pipe would not work.



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  8. #148
    Team Member BJuby's Avatar
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    Thanks for the explanation. Your pictures explain the comparison good as well. Another question. The later quincy pipes (to my understanding) had water injection at the elbow. What is the reasoning you chose to not do that?

    By the way, that mock up looks amazing

  9. #149
    J-Dub J-Dub's Avatar
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    Default Boat?

    What is your desired run date of this piece of art? Also, are you planning to run it on a hydro or a runabout? How about a Yellow 1976 DeSilva KR with R-12 painted on the side???

    J-Dub

  10. #150
    Team Member Gene East's Avatar
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    J-Dub I don't think your runabout or any of the hydros Dick has on his trailer can do justice to this "Beast", but won't it be great to see and hear it run at a speed the boats available can accommodate?

    BTW: A friend sent me a limited edition boat racing calendar for Christmas. Guess what is the picture for May? Yep, Ole R-12 herself. Great looking boat. Hope you get everything lined out on your project.

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