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Thread: ESE's works engine tuner

  1. #33541
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    Quote Originally Posted by Vannik View Post
    The best way to look at a turbo is to consider it a device that increases atmospheric pressure. Then all the requirements at 1 atmosphere are still there at higher atmospheres.
    Thank you Neels :-)

    A question I always had: Will supercharging a rotary inlet 2 stroke work? I was always sceptical in terms of rotary valve wear.
    But since the turbocharger is shifting the median pressure everywhere inside the engine, the pressure difference crankhouse to intake manifold might remain the same?!
    A friend tried it with a VW smoke pump roots on a 100cc kart engine - that did not work with a short manifold due the pulsation of the roots compressor. Has anyone tried this with a decent volume between supercharging device and rotary plate? Flettner by chance?

  2. #33542
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    .

    Here you go. Original 26hp Sporty 125cc two stroke turbocharged complete with expansion chamber.

    Basically they just doubled the hp by adding a Turbo. They got 53hp at 11,000 rpm with 1 bar boost.



    Guess who at Team ESE wants to turbo his 2T ...... ... me me me.

  3. #33543
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    This is a good look at their 50cc version.

    19.6 hp at 11,931 rpm, low boost. As 15,000 rpm is easily possible and higher boost there looks to be plenty of potential.



    The particular racing class that Team ESE are involved in allows for turbocharged 70cc water cooled two strokes.

  4. #33544
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    And then there's a really serious turbo engine with maybe 800 hp on nitrous:

    Lohring Miller

    Click image for larger version. 

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  5. #33545
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    Quote Originally Posted by lohring View Post
    And then there's a really serious turbo engine with maybe 800 hp on nitrous:

    Lohring Miller

    Click image for larger version. 

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    Lohring, I have a number of photos of that sled but no info on it running. Do you know more?

    Neels

  6. #33546
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    Quote Originally Posted by lohring View Post
    And then there's a really serious turbo engine with maybe 800 hp on nitrous:

    Lohring Miller

    Click image for larger version. 

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    How do they not melt the pistons?

  7. #33547
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  8. #33548
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  9. #33549
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    How do they side step physics, all that extra thermal load. Aluminium pistons would surely have long vaporized within seconds.

  10. #33550
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    Perhaps lots of extra fuel and water injection like the Reno Air Racers have used forever?

  11. #33551
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    Methanol I guess and as you say lots of it. Hardly practical for an off road enduro bike. Or does this mean we need to use really small engines.
    Never the less, impressive performance, I'd like that next time I come up a 450 in a drag race out of a corner. 😆

  12. #33552
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    now just to join the drive shaft.
    Drive shaft sized to handle turbo charged twostrokes in the future.😆

  13. #33553
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    And not to forget the picture.
    Looks like I might have to raid the backup scrap heap.
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  14. #33554
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    Running on Nitrous simply increases the combustion pressure , as its effectively air and fuel mixed together.
    The combustion temperature could essentially be exactly the same - thus no reason to melt anything.
    And as we have talked about before the mechanical forces on the crank and piston increase as the square of rotational velocity and are several orders of magnitude greater than combustion forces
    pushing down on the piston.
    So as I have been saying for years , you could double the power of most any engine and if its not reved any harder its inherent reliability isnt affected ( apart from ring pressure on the bore ).
    Ive got a thing thats unique and new.To prove it I'll have the last laugh on you.Cause instead of one head I got two.And you know two heads are better than one.

  15. #33555
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    Now we mean business.
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