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Thu Apr 15, 2004 12:33 pm
Fleet, Hampshire
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Tue Apr 12, 2005 12:24 am
Nr Chippenham, Wiltshire
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3474
Thu Apr 15, 2004 8:10 am
Colchester, Essex
Stunned Monkey wrote:Dave mate, I have no interest in getting into another verbal tennis match on this subject. There's so much I could reply to all the "facts" you put about but it all comes down to physics. Air density, pressure vs flow, etc etc etc. You don't need to know about engines to understand the physics behind getting a gas through a hole as quickly and efficiently as possible. And lowering the temperature of a gas increases its mass while keeping the volume constant. In other words, you increase the density. You WILL get more oxygen into the cylinders *without increasing the flow* if you lower the temperature of the charge. THAT is basic physics.
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3709
Mon Apr 18, 2005 7:11 am
Alpine France
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302
Sat Apr 24, 2004 12:23 am
Penicuik, Scotland
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Tue Apr 12, 2005 12:24 am
Nr Chippenham, Wiltshire
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Wed Apr 14, 2004 10:26 pm
Cumbria
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10431
Fri May 28, 2004 11:58 am
Derbyshire
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3709
Mon Apr 18, 2005 7:11 am
Alpine France
clee wrote:FFS It's not rocket science you know
http://www.grc.nasa.gov/WWW/K-12/airplane/bern.html
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10431
Fri May 28, 2004 11:58 am
Derbyshire
andyh877 wrote:clee wrote:FFS It's not rocket science you know
http://www.grc.nasa.gov/WWW/K-12/airplane/bern.html
oh yes it is
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3474
Thu Apr 15, 2004 8:10 am
Colchester, Essex
mitchella wrote:
Dont know much about detonation and ignition advance and stuff but I think you are both right. If there is a flow restriction then the volume of air that can enter the engine will ultimately be limited. However, the mass of air that can enter will not be limited - well not until you are pumping liquid oxgen in anyhow, and will vary according to the temperature of that air.
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stunnedmonkey wrote:Yes, Dave, doubling the pressure in a sealed container with a restricted oulet will double the flow out of said outlet
stunnedmonkey wrote:Dave, please show me any third party literature on the subject that proves a power limit regardless of boost when restrictors are placed on an air intake. And by this I do not mean the absolute power limit beyond which any extra energy is wasted just pumping the air through the restriction.
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3709
Mon Apr 18, 2005 7:11 am
Alpine France
simontaylor wrote:I'd be up for putting my car on the rollers next year, as they are close to home too, but my car is no longer "std", mainly the 10inch Carhege Cooler and increased boost, both of which can easily be turned off or down to simulate a std car.
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302
Sat Apr 24, 2004 12:23 am
Penicuik, Scotland
David Gentleman wrote:Now on the left you have the pressure ratio (pr=2 is 1 bar of boost, pr=3 is 2 bar of boost and so on) and at the bottom lb/min of air flow. Now this is mass of air, it makes no basis of whether its hot, cold or marshmallow, a Lb of air is lb of air, much like a ton of feathers is the same as a ton of lead....
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3474
Thu Apr 15, 2004 8:10 am
Colchester, Essex
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