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Does anyone have any of the aerodynamics specifications for the 1948 to 52 Ford 1/2 tons?
I have been working on a model in a few older programs I have to see what it would do on paper raising or lowering the body, etc. There use to be a site that had several older vehicles frontal area, etc on it but it must be gone because I haven't found it again. I still got close to a week at work and looking to finish this up when I got off or work each day.
The programs I am currently using are a Desktop Dyno 2003, Drag 2003 and Cartest 2000. I got them years ago and finally found my copy of them. Just couldn't find all of the pages I had printed out to go with them.
I don't think Henry, or most others, were too concerned about aerodynamics back then. I would imagine an F1 is very similar to a barn door as Imabaka's wife so succinctly put it. Probably not a lot you could do to improve it besides lowering it - but that may not help much.
Drag 2003 does have 69 chevy truck preloaded so I used that as a base and modded it some. I found found several other car specs but truck specs and 50's models cars and truck seem to be hard to find. I have the spec chart with the measurements in the front so I can figure it out by hand. I found and saved what to do in a word document but trying to make sure from several sources before I did it.
x2 on the brick... I've seen barn doors fly during a tornado, these things couldn't fly with a jet engine strapped to the bed.
maybe you can reverse engineer it from this: 70 mph is top speed with the 95hp original 6cyl motors - plenty of rpms left, plenty power, just drag @70 takes all the wind from ya.
0.74 Legends car
...
0.6 + a typical truck
...
0.51 Citroën 2CV 1948
so the worst 1948 entry (the Citroen) is lower, has a more reclined windshield, and overall to my unscientific eye a lot better aerodynamics than my truck. Legends cars are small scale fiberglass 30's and 40's dirt track race cars..
Frontal Area : 28 SQFT
Aero Drag Co: 0.50
Weight on Driving wheels: 38.0%
When I get off work tonight I am going to look up and see If I can find a straight ahead shot of a 48-52 ford pickup and then impose over the image grid lines. Taking some of the measurements I have I am going to scale the squares on the grid and then see If I can come up with a workable scale.
I know I still have some weights to swap out over the nose like 302 vs the flathead and original 3 on the tree vs FMX.
When I finally get the truck up and going I am going to take it to the local scales to do a full weigh in. The truck all the way on the scales. Half and half on the front and read. Half and half on the sides to get a more correct 4 wheel weight.
When I get all of the numbers figured out ( or close as I can get it) it can be something we can all play with.
2013 Mercedes Benz CLA180: cD = 0.22
1903 Vermont dairy farm barn door: cD = 0.97
Using the interpolation principle and formula of pi R Round, adjusting for barometric pressure of 29.91 inches of mercury.....................I come up with a figure of:
pine cone - you gota show your work to get credit. What I'd suggest is an empirical calculation based on speed coasting down a hill. Now we have a good selection of nice hills to coast down here in OR. The road into town has a 1/2 mile at about 8 percent and my old minivan will coast at about 60. I should compare that to my truck.
I finally found a good straight head shot of a 52 Ford. I uploaded it as a background in Excel and adjusted the grids on the squares until they were at 1" x 1" going by the 75.96" (I used 76") measurement on the tiles. Same basic thing on the height. I came up with 28.47 Square Ft.