Didn't check the Wallace site, but here's a very easy one: http://www.apexgarage.com/tech/horsepower_calc.shtml It includes rolling resistance, but that's a fairly small factor and you can cancel it out by reducing the weight input to zero.
I looked up a table of vehicle CDs and areas in an aero book by Joseph Katz and based on the CDs for a couple of lumpy compacts (VW Beetle and Citroen 2 CV, 0.49 & 0.52) I believe your Willys would be ~ 0.53. Similarly, based on several mid-size European sedans, the frontal area should be ~ 19 square feet.
You can of course compare power requirements of a slipperier body by changing the inputs; CDs of many modern cars are around 0.30 or less but the areas are likely a little more, e.g. 21 ²ft. for a mid-eighties Camaro.
Another how much HP with a twist....
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Re: Another how much HP with a twist....
Felix, qui potuit rerum cognscere causas.
Happy is he who can discover the cause of things.
Happy is he who can discover the cause of things.
Re: Another how much HP with a twist....
I will look some more.
Re: Another how much HP with a twist....
Go to wallace Calc and find " Calculate H.P. for speed" and see how that works for ya.
Re: Another how much HP with a twist....
What et goes with that 2300 lbs and 138 mph? It's a pretty car. Aerodynamically the rear of the car is twice as important as the front, and while yours slopes down faster than it should the overall drag might not be as bad as you imagine.
Carl Ijames, chemist not engine builder
carl ddott ijames aatt verizon ddott net
carl ddott ijames aatt verizon ddott net
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Re: Another how much HP with a twist....
Thanks Guys. I found newer calcs on that site that weren't there before.
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Adam
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Re: Another how much HP with a twist....
Beautiful car.
My first drag racer was a 41 Willys 4 door with a 305 Chevy small block.
https://www.grc.nasa.gov/www/k-12/airplane/dragco.html
Erland
My first drag racer was a 41 Willys 4 door with a 305 Chevy small block.
https://www.grc.nasa.gov/www/k-12/airplane/dragco.html
Erland
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Re: Another how much HP with a twist....
Thanks Erland.
LOL my 6.04 1/8th is exacly the same as the 9.56 1/4 et. The speed is down though and is what got me thinking LOL
LOL my 6.04 1/8th is exacly the same as the 9.56 1/4 et. The speed is down though and is what got me thinking LOL
GURU is only a name.
Adam
Adam
Re: Another how much HP with a twist....
Drag is a pretty small factor re E.T., which is what counts. Decades ago, a number of efforts to improve TF performance via aero body shapes all failed. The few pounds of additional bodywork more than cancelled out any drag reduction effects.
Felix, qui potuit rerum cognscere causas.
Happy is he who can discover the cause of things.
Happy is he who can discover the cause of things.
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Re: Another how much HP with a twist....
I'll be damned! Within the hundredth on all!77cruiser wrote: ↑Mon Oct 15, 2018 9:18 pm This one shows that the mph would be the same.
http://www.wallaceracing.com/etcalc.php
GURU is only a name.
Adam
Adam