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Thread: The sweet sweet sound of a MERLIN:

  1. #1
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    The sweet sweet sound of a MERLIN:

    Tonight a colleague asked me to try and search for some parts for his Harley, I went onto Wgtn M/Cycles web page:

    See the attached, this is nearly twenty odd years ago now, but still bloody amazing, OH for the sigh of a MERLIN:
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    Wheeew!!! Any idea how it went? Or where it went?
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    Or you could buy a Speed Triple with Microns on it, that's the closest to a Merlin I've heard.
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    That's not a full size RR Merlin. Merlin was a V12, real big. That looks like 2 cylinders cut off a Merlin on a special crankcase. Very interesting but, a proper Bert Munro effort
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  5. #5
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    Quote Originally Posted by Ixion View Post
    That's not a full size RR Merlin. Merlin was a V12, real big. That looks like 2 cylinders cut off a Merlin on a special crankcase. Very interesting but, a proper Bert Munro effort
    The 2 pistons come from a Merlin, originally out of a mosquito bomber

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    Std engine for Spitfires and Hurricanes as well. V 12 Engine. Replaced the std Allison engine in the US Mustang and turned it from an underpowered plane into a great one.
    RSV Mille: No madam, its an Aprilia, not a Harley. If it were a Harley, I would be pushing it !

  7. #7
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    Sigh for a Merlin, by Alex Henshaw.
    An excellent read!
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    I always have a mental grump when I see discussions about Merlin's being "one of the finest piston engines built."

    They were for the time quite good, but the the Bristol Centaurus range (sleeve valve) was a better technological product, with better power to weight and specific power output by engine volume.

    The Merlin's roots lie in WW1, refined through the Supermarine seaplane racers of the '20s and '30s, and I reckon it wouldn't be hard to make one of these puppies put out around 6000hp using modern tolerances and metallurgy.

    The Rotax single that powers a lot of Ultralight aircraft is probably one of that finest (and most reliable) piston engines ever built for an aircraft.

    The Packard built Merlins suffered from the same issues that, for instance the US version of the 20mm Hispano suffered. US Imperial and UK Imperial standards are different in all sorts of ways. From talking to Spitfire pilots who flew Spitfire Mks VIII, IX, and XVI powered respectively by Merlin 66, 60, and 266, the 266 (2 denotes Packard built) never met it's rated power output above 16,000ft and the vast majority of Spitfire XVI's were built with the LF wing, which was clipped to provide better speed and roll rate at low altitude. The 266 also required (anecdotally) a great deal more maintenance due to slightly sloppier tolerances introduced by US Imperial measurement conversions in the production process.

    Here's some pictures that show the differences between a mid-30s Merlin and an early-40s Merlin. The Merlin one was used in the very first Spitfires and Hurricanes, and the XX was used in a variety of Hurricane, Mosquito, and Lancaster variants.
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    jim you spotter......

    make sure the sound is turned up LOUD
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    Quote Originally Posted by crack View Post
    Tonight a colleague asked me to try and search for some parts for his Harley, I went onto Wgtn M/Cycles web page:

    See the attached, this is nearly twenty odd years ago now, but still bloody amazing, OH for the sigh of a MERLIN:
    ahh that thing. it was about 5 litres wasn't it?
    they used to use it before the Philipp Island GP to do burnouts for the crowd.

  11. #11
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    5 liters!?!? Try 27 litres mate!!

    Edit:
    27l for the whole engine... 2 out of 12 cylinders gives about 5l... ta-dah... you are likely kerrekt!
    Last edited by Bend-it; 6th December 2006 at 14:22. Reason: Oops, didn't read the first few threads
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  12. #12
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    The VTWIN hacked off the end of a Merlin was about 5 litres. You muppet.

    Though I think it's was more like 4.5 litres.
    If a man is alone in the woods and there isn't a woke Hollywood around to call him racist, is he still white?



  13. #13
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    Boo hooo.... you said VTWIN... booo hooooo

    sniff sniff...

    Yes, you are right.
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    "All that is necessary for the triumph of evil is that good men do nothing." Edmund Burke

  14. #14
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    Jim,after reading that huge thread,Mate you need to get out more!
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    En route to a Brass Monkey some years back, we were in Wanaka on Friday night and staying at the motor camp. Late afternoon and we were stretched out on the grass in front of the cabins, having a few beers and lying (as you do) about the days events when a Spitfire came diving down out of the setting sun and levelled out over the lake, before hauling back into a climb. Was Tim Wallis having a play and for about ten minutes, not a word was spoken, our group just spellbound by the sight and sound. One of these days I'll go back for the Warbirds over Wanaka, but I doubt if it would be a magic as that evening.
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