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Thread: forced air induction for Tzr

  1. #1
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    Default forced air induction for Tzr

    I had been podering this idear for some time, can the power of the Tzr be increased by directly forcing air from the plemium preasure directly into the air box, im imagining that the jets would have to be increase significatley.

    ok you Tzr exsperts ,whts the verdict.

  2. #2
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    Default Re: forced air induction for Tzr

    Yes it can be done, but you'd end up with a F2 craft, since it would be a forced induction system

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    Default Re: forced air induction for Tzr

    hi ewan its ricky

    why would it become a f2 beacuse i am not changing the cc of the engine. it will still be a tzr250 but im just putting more fuel and air into the engine correct me if im wrong thanks rick

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    Default Re: forced air induction for Tzr

    [quote im just putting more ... air into the engine [/quote]



    Hi,



    That's what forced induction is. The HCGB rules are that you then count the engine as double the cc when deciding the formula.



    This, however, was meant (and may even be written as such) for superchargers and turbochargers. Technically you would actually be using the fan as a crankshaft driven supercharger. On the other hand the plenum pressure is so low compared to a proper supercharger that the end result would be difficult to measure.



    Nick


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    Default Re: forced air induction for Tzr

    so if i was to put forced induction on my craft i would automaticly be classed as a f2 craft im confuzzled thanks rick

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    Default Re: forced air induction for Tzr

    The competition regs are on the download area:



    "Pressure charged engines e.g.: supercharged, turbo charged, shall be rated at twice

    their swept volume."

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    Default Re: forced air induction for Tzr

    You evil lot. Stop winding them up )



    Rick/Mick



    Feeding air from the distribution plenum to an engine will not give any significant increase in power because the plenum pressure is about 1/100 of the additional pressure required to give practical "supercharge pressure" to any engine (4 stroke).



    It is *impossible* to supercharge a *piston ported* two-stroke engine!! The first port to open in its cycle is the exhaust. The induction occurs whilst this port is open.




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    Default Re: forced air induction for Tzr

    My mate did this guide on why supercharging 2 strokes is impossible (when the ports are inline, like in most 2 strokes)and explains the physics behind it if your interested with nice colourful, engineer friendly pictures!!



    It is for small model engines for cars but the principle is the same,



    http://www.glypo.co.uk/hiw-supercharger.php



    Graham

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