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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