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Thread: The Bucket Foundry

  1. #1081
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    Quote Originally Posted by Frits Overmars
    . . . the british engine won on parts count.
    Could that be a national trait? I read that Honda people were called in for opinions/advice by Jaguar, and found that the back end of the Jag sedan was made from something like 12 stampings . . . which the Honda guys managed to reduce to four or five for the next version of the car.

    As for MerBenz, from the Sixties, on their cars at least, they seem to love complexity (little motorized wipers for the headlights, anyone?). I had a '71 280 SEL sedan, and was told by the local MB specialist that I had best never need to do any work on the heater, because when MB built the car, they suspended the heater from a wire and they built the car around it . . . .

    Still off topic, but maybe of interest to a few: Growing up in Seattle in the 1950s-'60s, the number one sport by far, especially for the boys in my neighborhood, was Unlimited hydroplane racing. I feel bad for any gearhead who has never had the experience we had many times in those years, of watching a full field of seven boats making a clock start with the thunder of the seven V-12 fighter plane engines shaking our very soul and the sight of the fifty-foot-high, 180-foot-long roostertails behind the beautiful 30' mohagany hulls filling us with a lifelong love. The Merlin 1640 (cubic inch), Allison 1710, and occasional other WW2 era engines were set up to make two to three times their "5-minute war emergency" level of manifold pressure; you could run only two heats flat-out at 130" (on 115/145 purple av-gas with further octane enhancement and water/alky injection, and lots of nitrous) then you had to take the engine down because the bearings in the "blade-rod" ("fork and blade" paired rods on a single crank journal) had pounded out and needed replacing before they seized the rod pair together and then blew a hole in the side of the case. Of course, these were soft bearings, designed for fast break-in and for embedability in a fighter plane engine. Later, the Merlin guys discovered the "transport" bearings, for Merlin versions from such aircraft as the Avro Tudor and Canadair Four.

    The Merlins eventually had more success than the Allison boats, not so much from the superiority of the engine itself but because the available Allison versions had a small, single-stage supercharger while the available Merlins (-7 and-9) had a huge 2-stage blower (it was also 2-speed, but this feature was eventually diasabled, and the racers only used "low blower"). One crew did get hold of a Daimler Benz engine, but never got it to work, IIRC because they couldn't get it to oil in the upside-down mounting in the boat. Another failed attempt involved a very rare Allison 3420 from an experimental WW2 airplane; this was two regular Allisons side by side on a common gearbox and crankcase!! Another outfit had modest success with an enormous Packard V-16 out of an air-sea rescue boat. And a few outfits eventually got their hands on some Rolls Griffons (Shackleton bomber and radar plane), which had considerably more displacement than the Merlin without being physically much larger; it was also better made and a better design.

    Unlimited hydros were Seattle's citizen sport for twenty five years, and a surprising number of blue-collar guys and others did volunteer work on the many locally-based boats. Alas, the glory days are gone. In the early 1980's, the governing body of the sport failed to follow the wisdom of the Indy-car people and allowed turbine engines to take over. Most boat owners and all sponsors preferred turbines because they required so much less time to prep and maintain than the old V-12s. But THE SOUND is long-gone; the turbines are sneered at as "vacuum-cleaner motors" by old-timers. I don't even go to the races now, anymore than I would bether to walk across the street to watch electric cars/bikes/boats race. I was lucky to live when I did and see the things I did, and don't care that I won't live to see the brave new silent world that approaches.

    Hint to the adventurous (and monied): About the last chance you have to hear THE SOUND (albeit not redoubled by reflection off the surface of a lake, as we heard it) is at the Reno Air Races. Every gearhead should see this event once in his life.

  2. #1082
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    13th June 2010 - 17:47
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    I'd heard that story about Merc heaters too, Smitty. Never owned one so can't confirm..

    I hear what you say about the noise of the big V12's. We used to have powerboat racing on the local estuary here and i can remember the late Len Southward running Redhead which used an Allison. Glorious noise bouncing back off the hills at the back of the estuary.
    The top class now appears to be blown 7 litre automotive V8's, still an impressive noise but no howling V12.

    One very precious memory was from the late 90's. We lived up on the hills overlooking ChCh. Some lucky sob decided the evening before Anzac Day (our rough equal of Memorial Day) to take his P51 Mustang up for an airing. He spent about an hour throwing it around the sky in full view of us, he could fly very well - and the sound.....

  3. #1083
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    10th February 2005 - 20:25
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    Quote Originally Posted by Frits Overmars View Post
    I don't know about the precision, The Benz was a lot easier to produce than the Rolls.
    I'm glad the Germans didn't win the war though (although, judging by present-day economics, they did after all.)
    I read somewhere that they took a DB apart in Britain fairly recently and found that all the tolerances were right smack in the middle!

    As for the Germans and Japanese and their amazing recovery, my analogy is that it's like when you cut down an old tree or hedge to the ground, it will always grow up again much stronger.
    However these two countries did benefit from being rebuild with huge input of fresh machinery and cutting edge technology and education from the USA. and the rest of us had to wallow in the trail of destruction left by a few over ambitious military leaders (not necessarily by the people themselves).
    PS apologies to SMITTY.

  4. #1084
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    25th March 2004 - 17:22
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    There's a couple of mutton heads in the lifestyle block up the road that occasionally thrash around on some largely unmuffled foulstroke dirtbikes. They sound dreadful.


    Sorry I thought we were sharing.
    Don't you look at my accountant.
    He's the only one I've got.

  5. #1085
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    Quote Originally Posted by F5 Dave View Post
    There's a couple of mutton heads in the lifestyle block up the road that occasionally thrash around on some largely unmuffled foulstroke dirtbikes. They sound dreadful.
    Young "muttonheads" have the habit of eventually growing up into wise old guys - like us! - Some even become expert foundrymen - like me!

  6. #1086
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    I wouldn't mind so much if they were RMs or YZs.
    Don't you look at my accountant.
    He's the only one I've got.

  7. #1087
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    23rd May 2015 - 17:27
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    Hi , will post some pics as soon as I figure out how. At work now sitting about 20 ft away from a couple of RR Merlins fitted in what was the fastest aircraft for several years during WW2. Now if I could talk the boss into letting me take it out for a quick beatup.... Two merlins sound better than one especially from the inside of the machine. So I guess I'm a bit biased in favor of them especially the Packard version, thats the one with the oil on the inside.Click image for larger version. 

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  8. #1088
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    10th February 2005 - 20:25
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    Quote Originally Posted by MikeT1 View Post
    Hi , will post some pics as soon as I figure out how. At work now sitting about 20 ft away from a couple of RR Merlins fitted in what was the fastest aircraft for several years during WW2. Now if I could talk the boss into letting me take it out for a quick beatup.... Two merlins sound better than one especially from the inside of the machine. So I guess I'm a bit biased in favor of them especially the Packard version, thats the one with the oil on the inside.Click image for larger version. 

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    The Mosquito I suppose? - guess you done a lot of work on it - how far on is this one now? - pity about the first one, I heard that it was laid up at present.

  9. #1089
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    23rd May 2015 - 17:27
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    Yes Mosquito's been building them full time for 10 years now. KA114 is still airworthy to the best of my knowledge, Wal is trying to raise funds to fly it to Oshkosh. As i type this my smoko table is under the wingtip of NZ2308 and the fuselage for PZ474 is just 25 ft away, getting ready to join the two halves just like a big airfix model.

  10. #1090
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    20th January 2010 - 14:41
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    Quote Originally Posted by MikeT1 View Post
    Yes Mosquito's been building them full time for 10 years now. KA114 is still airworthy to the best of my knowledge, Wal is trying to raise funds to fly it to Oshkosh. As i type this my smoko table is under the wingtip of NZ2308 and the fuselage for PZ474 is just 25 ft away, getting ready to join the two halves just like a big airfix model.
    Also the by a coincidence in construction likely first stealth aircraft......Who wood have thought of that. Probably the most versatile plane made during WW2.
    The Mosquito could carry a 4,000 lb bomb load from England to Berlin while the B-17 was limited to about 3,500 pounds at the same range.

    What glue and what cloth covering do you use?



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

  11. #1091
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    Quote Originally Posted by MikeT1 View Post
    Yes Mosquito's been building them full time for 10 years now. getting ready to join the two halves just like a big airfix model.
    Great stuff, can't wait to see one take off from Ardmore. (missed the first one). saw one when I was about 18 blasting just above the runway at high speed - very impressive it was!

    Regarding my trying "gladwrap" as a parting agent to seperate the pattern halves, I did do that just for a laugh really, as the practice moulding (#5) didn't part cleanly, as you said, the talc acted more like a glue than I would have liked (possibly the sand was a trifle too wet, I dunno) but I thought I'd give it a go anyway and it actually worked! - just spread it over the sand with pattern in situ, put cross slits at the dowel holes and sprue hole and riser, set the other pattern half on top and carried on as usual. It seemed fine to me, but then as you probably have realized by now, I'm somewhat lacking in experience to be able to come to any conclusion as yet so I'll try it again.

    Thanks for at least pointing me in the right direction with the furnace problems (jet size etc.) however it all went in a strange direction when it finally decided to work well as the burner was withdrawn into the tuyere (from the inner end) by a massive 80mm, all very strange but as it works well now I'll be happy without questioning what I've got!

    PS. Maybe the burner is too short and the 'tuned length' is important (as on a two stroke pipe)

  12. #1092
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    Quote Originally Posted by F5 Dave View Post
    I wouldn't mind so much if they were RMs or YZs.
    Dave, we are fast getting to a generation who will never have heard of a two stroke, they all have the cash to spend on complicated, top heavy expensive beasts covered with fancy plastic and gimmicks and don't even think that there ever was anything else - Honda will have at last got their way!

  13. #1093
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    Quote Originally Posted by Frits Overmars View Post
    I don't know about the precision, but the british engine won on parts count. I've been told you'd need two Daimler engines to equal the number of parts of one Rolls.
    The Benz was a lot easier to produce than the Rolls. I'm glad the Germans didn't win the war though (although, judging by present-day economics, they did after all.)
    Zee germans though might have been better built, maybe even better designed, but in the tank department at least the yanks could out build them 10/1.
    Not only that when they broke down the yanks could fix them in the field. The Russians seemed to follow the same philosophy but I think had a better more rugged design
    As long as the german tanks were only twice or three times better tanks. They were going to lose and quantity.
    Pretty sure the Germans (BMW) own Rolls Royce now (cars anyway)



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

  14. #1094
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    22nd November 2013 - 16:32
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    Fellers,
    Have a look at these, Isle of Man stuff.
    https://www.youtube.com/watch?v=OmNXCJt7K3Q
    https://www.youtube.com/watch?v=HMGXcOqeMMg
    If you don't get goose pimples or even a slight dampness, then there's something wrong with you!

    Anyways for the Ryger Researchers, I have a solution. On Thursday, the good wife and I take off to the UK and go to the Goodwood Festival of Speed. First thing I'll do is to go straight to the Ryger tent, ask lots of questions, take lots of pics and report back to you asap.
    By the time I'm back, I want to hear how much progress Neil has made on the first prototype.
    Then after a couple of months, all the buckets in NZ will be running up to 30k, annihilating all previous lap records.
    "Success is the ability to go from one failure to another with no loss of enthusiasm.”

  15. #1095
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    Quote Originally Posted by ken seeber View Post
    On Thursday, the good wife and I take off to the UK and go to the Goodwood Festival of Speed.
    Ken, if you fly this Thursday, you can be here just in time for the classic races on the Sachsenring in Germany. Organized in cooperation with Ferry Brouwer, there will be many unique classic bikes, not just on show, but racing. If you think you can make it at all, let me know. I'd love to meet you there.
    http://grrc.goodwood.com/section/festival-of-speed/
    http://www.motorradonline.de/termine...ni-2015/659202

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