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Anyone know the frontal area of a 2005+ Tacoma?

Discussion in '2nd Gen. Tacomas (2005-2015)' started by ElectronMan, Feb 11, 2010.

  1. Feb 11, 2010 at 4:54 PM
    #1
    ElectronMan

    ElectronMan [OP] Well-Known Member

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    I'm bored and wanted to do some drag force/top speed calculations. I've got the coefficient of drag and I've estimated the frontal area to be 24 ft2, but that seems awfully high. Anyone have a more solid number?
     
  2. Apr 12, 2010 at 2:46 PM
    #2
    Cheeto6182

    Cheeto6182 Cheeto

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    Did you ever figure this out (frontal-area)? I've found drag-coefficients of .36 and .39 but I'm not sure of the frontal area. Want to enter the data into my new dashdyno :D
     
  3. Apr 12, 2010 at 2:48 PM
    #3
    Tillers_Rule

    Tillers_Rule ......................

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  4. Apr 12, 2010 at 2:51 PM
    #4
    Jester243

    Jester243 mod status????

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    :D
     
  5. Apr 12, 2010 at 2:57 PM
    #5
    Jason'sLawnCare

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    Is that including the windshield? If then that sounds about right. Just pulling numbers out of my ass but the windshield is probably around 2x7 ft that's right there is 14sqft or am I doing this wrong?
     
  6. Apr 12, 2010 at 3:28 PM
    #6
    Cheeto6182

    Cheeto6182 Cheeto

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    this is how the Dynodash manual says to calculate:

    Calculation of Frontal Area

    Frontal area can be calculated for any car. The frontal area represents the front projection area
    of the vehicle. If one takes a straight-on picture of the front of a vehicle, it is the area included
    in the outline. Use the following to calculate:
    1. Calculate the area of a rectangle, which would encompass the front of the vehicle
    (multiply width by the height).
    2. Adjust the figure obtained above for areas not included, such as top rounded corners,
    etc. Typical adjusting values are 85 percent for cars, and 100 percent for trucks.

    according to the specs from toyota the tacoma Dbl cab is 70.1 in (5.84 ft) High and 74.6 in (6.21ft) wide.

    I do have a lift and higher tires though, do you guys think that matters? Because if the truck is lifted the air gap under the truck is increased and thus not adding to the surface area of the truck... this science is hard science lol.
     
  7. Apr 12, 2010 at 3:33 PM
    #7
    Jason'sLawnCare

    Jason'sLawnCare Prepared for Bambi

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    You're still increasing the area to some extent. More tire and possible lca are exposed now. Also all the increased turbulence under the truck may affect it?
     
  8. Apr 12, 2010 at 3:34 PM
    #8
    kbp68

    kbp68 hey...I can change this!

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    x2
     
  9. Apr 12, 2010 at 3:40 PM
    #9
    Cheeto6182

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    I'VE GOT AN IDEA! I just need a few other knuckle heads to confirm my theory. what If I take a string, run it flat under the truck, then bring it up the sides, over the top of the windshield, and tie it off, that should be a perfect outline of the trucks frontal silhouette, then I can square off the string and theoretically.... vuala - frontal area!
    BUT! Somewhere in my head I remember a geometry lesson that used a piece of string, when she made a SQUARE with the length of string somehow the cows had more grazing area than the cows in the rectangular area made with the same length lol.
    any thoughts? and no talking shit about my cows
     
  10. Apr 12, 2010 at 3:42 PM
    #10
    skunk

    skunk what did I miss?

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    :rofl:
     
  11. Apr 12, 2010 at 3:59 PM
    #11
    Phlip4x4Sport

    Phlip4x4Sport Well-Known Member

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    Yes, square/rectangle does matter:
    4
    2 2
    4

    perimeter length = 12, area = 8

    3
    3 3
    3
    perimeter length = 12, area = 9
     
  12. Apr 12, 2010 at 4:05 PM
    #12
    Cheeto6182

    Cheeto6182 Cheeto

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    damn... back to the drawing board. Any other ideas out there?
     
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