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Thread: ESE's works engine tuner

  1. #36421
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    20th April 2011 - 08:45
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    Quote Originally Posted by Flettner View Post
    Maybe Ill be running one underneath and one out the back, I can make them fit.
    It's not your parallel-twin (it's the Dutch Rimar 600V2) but it might give you some pipe-fitting ideas.
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  2. #36422
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    20th April 2011 - 08:45
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    Quote Originally Posted by Vannik View Post
    There are people in this world that uses an Excel spreadsheet and acoustic theory to create what they claim is a simulator that calculates what your exhaust pipe should look like.
    They publish this mostly on Farcebook so I thought it would be a good idea to add another installment on gasdynamics.
    Please give comments so I can improve this.
    I am terribly sorry to have to say this, Neels, but your dissertation CAN'T be improved .
    Well okay, one minor misspelling: "Typical pressure pulses in an engine has amplitudes..." should read '..HAVE amplitudes...".
    Did you have one particular Fakebook contributor in mind (Michael Forrest) or are you dedicating your treatise to all the Dunning-Kruger cases over there?
    https://en.wikipedia.org/wiki/Dunning%E2%80%93Kruger_effect

    Neels, would you kindly allow me to share your Gasdynamics 101 ?

  3. #36423
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    4th December 2011 - 22:52
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    Quote Originally Posted by Frits Overmars View Post
    Neels, would you kindly allow me to share your Gasdynamics 101 ?
    Frits, please feel free to share wherever you like.
    I might later fix the grammar error but not now.
    And yes, you know exactly who it is aimed at.

  4. #36424
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    20th June 2020 - 07:10
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    I have never seen somebody promote propaganda quite like he who must not be named

  5. #36425
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    6th February 2012 - 08:54
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    Facebook the worst time waster. everyone is an engineer, doctor, economist, tuning engine

    the easier access to knowledge, the more people seek and choose the easiest even if it is false. which increases the spread of stupidity.

  6. #36426
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    12th October 2016 - 01:24
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    Other than the impracticality of packaging, is there any reason the intake can't be placed on the exhaust side of the cylinder?

    The thought came while working on the base of the transfer ports and I just kept looking at all that unused real estate below the exhaust.

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    Patrick Owens
    www.OopsClunkThud.com

  7. #36427
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    20th June 2020 - 07:10
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    Arctic Cat ( Suzuki ) engines have case reeds on the exhaust side. They tilt way back in the chassis, giving them the nickname laydown engines.

  8. #36428
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    20th January 2010 - 14:41
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    Quote Originally Posted by Frits Overmars View Post
    It's not your parallel-twin (it's the Dutch Rimar 600V2) but it might give you some pipe-fitting ideas.
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    Pretty sure fletner did a tornado chamber for one of the creations already
    plus with 700cc he can give away a few HP

    Whilst not as Shinny but very petite Mr Mike Green's earlier chamber. off the web
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    Scooters also use some lever tricks for packaging
    Quote Originally Posted by Katman View Post
    I reminder distinctly .




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

  9. #36429
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    24th January 2014 - 08:12
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    On behalf of the gearbox for the 700cc: It seems it was done before.
    https://grabcad.com/library/gearbox-...lled-on-kart-1

    Regarding the piping in a 700cc twin: you can always go the 2in1 way. Otherwise making the pipes thinner should not kill all the power if done proper.

    And regarding packaging in the most complex ways, have a look at the vespa scene:
    https://falk-r.de/
    http://pipedesign.de/home.html

  10. #36430
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    12th March 2010 - 16:56
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    I have managed this reverse pipe ok. Single cylinder 360cc, YZ 250X gearbox. Just double it up.
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  11. #36431
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    20th January 2010 - 14:41
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    https://www.cycleworld.com/2016/02/2...orld-classics/

    Powering the Tul-Aris is a highly modified Polaris snowmobile engine. The two-stroke Twin has been enlarged to 780cc with hop-up components intended for snowmobile competition, though the straight-shot expansion chambers actually allow it to make more power than in a sled–165 crankshaft horsepower. The engine breathes through twin carburetors and reed valves at the front.
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    And smart enough to mount the water pump real low.
    Quote Originally Posted by Katman View Post
    I reminder distinctly .




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

  12. #36432
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    18th May 2007 - 20:23
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    Living the dream........ quitting regular work for a life of following his passion. I take my hat off to everyone who has done that.

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  13. #36433
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    12th March 2010 - 16:56
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    So I guess we make the 700 twin fit an R1 chassis, as we have one.
    Im not a fan of bolting everything to the engine, as a stressed member.
    Or for my own road bike, make my own frame, twin shock, more room for stuff to fit.

  14. #36434
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    1st May 2016 - 13:54
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    ...
    Down the page from Tim's link to the Rotax gearbox
    https://grabcad.com/library/gearbox-...lled-on-kart-1
    was this pic of a pair of pipes neatly arranged on the side of the machine.



    Obviously, for a motorcycle, you would need to put a saddle on top,

    Cheers, Daryl.

  15. #36435
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    13th December 2018 - 18:06
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    Quote Originally Posted by Flettner View Post
    So I guess we make the 700 twin fit an R1 chassis, as we have one.
    Im not a fan of bolting everything to the engine, as a stressed member.
    Or for my own road bike, make my own frame, twin shock, more room for stuff to fit.
    Those are all good ideas, be interesting to follow either one.

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