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Old 12-07-2009, 09:05 PM   #136 (permalink)
Frank Lee
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Join Date: Jan 2008
Location: up north
Posts: 12,762

Blue - '93 Ford Tempo
Last 3: 27.29 mpg (US)

F150 - '94 Ford F150 XLT 4x4
90 day: 18.5 mpg (US)

Sport Coupe - '92 Ford Tempo GL
Last 3: 69.62 mpg (US)

ShWing! - '82 honda gold wing Interstate
90 day: 33.65 mpg (US)

Moon Unit - '98 Mercury Sable LX Wagon
90 day: 21.24 mpg (US)
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Just for fun I plugged some numbers into a lift equation:

LIFT = (0.5) * Cl * DENSITY * SPEED * SPEED * AREA

I used a Tempo for the area figures and a Holden Commodore's front lift coefficient... just because I have nothing better.

Worked out to 19.6 lbs front end lift at 60 mph FWIW if I did it right which is remarkably close to my WAG of 20.

Grows to 78 lbs front at 120 mph. No worries, 2.3 a/t Tempo won't see 120 mph unless it's going off a cliff.

Recall, about 2000 lbs down force on the front end via gravity.

Yeah, 20/2000=1%.

I should add, how to define "front end" area? I used the total length/2. I suppose do the calc again for the rear, add em, and get total lift.
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Last edited by Frank Lee; 12-07-2009 at 09:42 PM..
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