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On 6/1/07, Blake Lewis <blake.lewis@gmail.com> wrote:
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
(93411ci/min) / (10000 rev/min) = 93.41 ci/rev
oops I guess my numbers are wrong (9.3411)
1300cc / (2.54cm * 2.54cm * 2.54cm)/ci = 79.33 ci volume
93.41ci / 79.33ci = 1.1774 = 117.74 % VE
Blake
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