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Thread: Cooling an air-cooled engine

  1. #16
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    OK, here's another thought; why not cool my intake air then? How you would do that I don't know lol. A bit trickier than cooling a hot bit of metal.

  2. #17
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    Quote Originally Posted by sAsLEX View Post
    Cold air means denser volume of gas entering the cylinder which means more oxygen which means more boom
    He already knew that.

    I pity the fool who doesn't already know that.
    kiwibiker is full of love, an disrespect.
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  3. #18
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    Quote Originally Posted by Fish View Post
    He already knew that.

    I pity the fool who doesn't already know that.
    Lol! You, and Squeak the Rat, are about the only people I know that can make me literally laugh out loud over the internet . I don't know why, it must be the glorious unexpectedness .

  4. #19
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    Quote Originally Posted by xerxesdaphat View Post
    OK, here's another thought; why not cool my intake air then? How you would do that I don't know lol. A bit trickier than cooling a hot bit of metal.
    A very long pipe, connected to some place where the air is very cold would do the trick. Like Antarctica for instance. But , seriously, yes, racers are aware of the power gains to be had from using intake air that is as cool and dense as possible.
    Quote Originally Posted by skidmark
    This world has lost it's drive, everybody just wants to fit in the be the norm as it were.
    Quote Originally Posted by Phil Vincent
    The manufacturers go to a lot of trouble to find out what the average rider prefers, because the maker who guesses closest to the average preference gets the largest sales. But the average rider is mainly interested in silly (as opposed to useful) “goodies” to try to kid the public that he is riding a racer

  5. #20
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    does a dense rider have the same affect

  6. #21
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    Quote Originally Posted by Ixion View Post
    A very long pipe, connected to some place where the air is very cold would do the trick. Like Antarctica for instance. But , seriously, yes, racers are aware of the power gains to be had from using intake air that is as cool and dense as possible.
    I hate you guys, with your reason and common-sense and knowledge! You never let me play around with anything cool! Like alternator-powered Peltier devices attached to my airbox!!!

  7. #22
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    Quote Originally Posted by xerxesdaphat View Post
    OK, here's another thought; why not cool my intake air then? How you would do that I don't know lol. A bit trickier than cooling a hot bit of metal.
    An intercooler would do it........

  8. #23
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    Quote Originally Posted by xerxesdaphat View Post
    You never let me play around with anything cool!
    Ba-dum, tsh.

    Seriously, though. You're committing Engineering Design Error #1 by falling in love with an intermediate hypothesised solution rather than focusing on your true requirement.

    Your true requirement is to make the bike go faster.

    Burning more fuel in each engine combustion cycle is an excellent brute-force way of achieving that, but cooling the air intake is not the only way of burning more fuel in each combustion cycle.

    For that matter, burning more fuel in each combustion cycle is not the only way of making the bike go faster.
    kiwibiker is full of love, an disrespect.
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  9. #24
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    Quote Originally Posted by Fish View Post
    Ba-dum, tsh.

    Seriously, though. You're committing Engineering Design Error #1 by falling in love with an intermediate hypothesised solution rather than focusing on your true requirement.

    Your true requirement is to make the bike go faster.

    Burning more fuel in each engine combustion cycle is an excellent brute-force way of achieving that, but cooling the air intake is not the only way of burning more fuel in each combustion cycle.

    For that matter, burning more fuel in each combustion cycle is not the only way of making the bike go faster.
    Wrong! My true requirement is to play around and generally amuse myself by playing with copper tubing, in much the same way I used to play around and amuse myself with Lego when I was a wee lad (not that long ago).

    Well, displacement is an easy way of course. Burning more fuel... instead of cramming it in there with squishier air, just make more room to cram it in. So that's why I always get pwned by the Gixxer thou at the lights...

  10. #25
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    Wrapping copper pipe between the fins of your air-cooled engine would lessen the air cooling effect of the fins.. unless you plan to run it all the time? Thermostat maybe?

    As for cooling the air? Just look at your fridge for clues. A radiator inside your air box flowing with cold coolant would chill the air to some degree... If you need a very small square radiator, a mini uses one in the cab for the heater... hot engine water flows into cab through little radiator and back to engine again - fan behind it blows through, heats up... viola. Go ask skidmark for his heater matrix... heck its not as if he needs it now! hahaha!!
    "Speed has never killed anyone. Suddenly becoming stationary - that's what gets you."
    Jeremy Clarkson.

    Kawasaki 200mph Club

  11. #26
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    Quote Originally Posted by xerxesdaphat View Post
    My true requirement is to play around and generally amuse myself by playing with copper tubing...
    Build a pipe organ.

    No, really.

    Quote Originally Posted by xerxesdaphat View Post
    displacement is an easy way of course
    I was thinking N2O...
    kiwibiker is full of love, an disrespect.
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  12. #27
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    Wow, I'm learning shitloads. Is that how NoS/NOS/Nos/nOS/WTF works... it condenses the air heaps, like a turbo.

    Hahah no I'm not building no fricking pipe organ. I did extensively modify my trumpet though, the mouthpiece and lead pipe especially... I had it sounding a lot like a flügelhorn by the end of it heheh.

  13. #28
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    Quote Originally Posted by xerxesdaphat View Post
    Wow, I'm learning shitloads. Is that how NoS/NOS/Nos/nOS/WTF works...
    I never went to university; I just stay up all night reading Wikipedia.
    kiwibiker is full of love, an disrespect.
    - mikey

  14. #29
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    I never went to university either, just the exams... no wonder my results last semester weren't quite top percentile haha.

    I see this has diverged quite a bit from the original topic, which was never meant to boost performance anyhow. What I was wondering though, is why (reading some bucket threads) do the bucket racers put water jackets on their motors?

  15. #30
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    To keep them moist?

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