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HI Blake,
Ah! It's even higher. I should have looked more closely at the
formulae. I saw you were dividing 1300 by something then didn't notice
the result was used in the denominator of the next formula. Sorry
about that. :)
Bob W.
On Fri, 1 Jun 2007 15:53:55 -0500
"Blake Lewis" <blake.lewis@gmail.com> wrote:
Bob,
You corrected the wrong way. And I had 10000 instead of 10700 rpm.
12A Pports can do 310 HP at 10,700 RPM at .667
If the .667 is BSFC then start with that
Density of air at sea level 15C = .0765 lbs/cf air/fuel = 12
.667 bsfc x 310hp is 206.77 lbs/hr fuel
206.77lbs x 12 = 2481.24 lbs/hr air
2481.24 lbs/hr / 60min/hr = 41.354 lbs/min
(41.354 lbs/min) / (.0765 lbs/cf) * (1728 ci/cf) = 93411 ci /min
(934113ci/min) / (10700 rev/min) = 87.30 ci/rev
1200cc / (2.54cm * 2.54cm * 2.54cm)/ci = 73.22 ci volume
87.30 ci/rev / 73.22 ci/rev = 1.192 =119% VE
Blake
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