05-26-2013, 11:52 AM
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#21 (permalink)
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Master EcoModder
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Quote:
Originally Posted by Frank Lee
Keep in mind that Cd is independent of frontal area; CdA between the two would be revealing.
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Correct, for a minute I was thinking in terms of CdA, which now makes me very suspicious of the Escort's low Cd number.
Although I'll admit the Escort must have a low CdA number compared to most of the cars on the road today based on it's size alone.
Maybe the author of the article made the same mistake? That would not account for the published Cd numbers though.
Mystery.
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George
Architect, Artist and Designer of Objects
2012 Infiniti G37X Coupe
1977 Porsche 911s Targa
1998 Chevy S-10 Pick-Up truck
1989 Scat II HP Hovercraft
You cannot sell aerodynamics in a can............
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05-26-2013, 01:01 PM
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#22 (permalink)
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(:
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No mystery; the Cd is the Cd. CdA would be a very different number- too different to be confused with Cd.
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05-27-2013, 09:07 PM
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#23 (permalink)
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Master EcoModder
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Quote:
Originally Posted by Frank Lee
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Allow me to clarify, the mystery is how these two cars could have closely matching Cd numbers when one is a box (Escort), and the other is only a box from the top of the tires down (Mustang).
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George
Architect, Artist and Designer of Objects
2012 Infiniti G37X Coupe
1977 Porsche 911s Targa
1998 Chevy S-10 Pick-Up truck
1989 Scat II HP Hovercraft
You cannot sell aerodynamics in a can............
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05-28-2013, 11:26 AM
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#24 (permalink)
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Master EcoModder
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Quote:
Originally Posted by kach22i
Allow me to clarify, the mystery is how these two cars could have closely matching Cd numbers when one is a box (Escort), and the other is only a box from the top of the tires down (Mustang).
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I think you got it right there (the bold above). The '12 Mustang is better aerodynamically than the '05 version, which was even boxier. I know first hand the '05 car was all about retro styling, not aero. |
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06-05-2013, 01:00 PM
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#25 (permalink)
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Not Doug
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UltArc, have you been able to make any progress? I am really excited for your build!  |
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06-05-2013, 02:32 PM
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#26 (permalink)
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Hydrogen > EV
Join Date: Apr 2012
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Quote:
Originally Posted by Xist
UltArc, have you been able to make any progress? I am really excited for your build! |
Absolutely zero progress! Each evening I plan to do my underbody at my local shop, but then he is occupied with a vehicle. We are tentatively planning today...
But I am putting off the kammback until my underbody is done. I am torn between doing it or not, but I still really want to complete it. I have all the materials I think I will need. I'll see more after I finish the underbody and I can evaluate my coroplast supply. |
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06-05-2013, 04:59 PM
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#27 (permalink)
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Not Doug
Join Date: Jun 2012
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Quote:
Originally Posted by UltArc
Absolutely zero progress! Each evening I plan to do my underbody at my local shop, but then he is occupied with a vehicle. We are tentatively planning today...
But I am putting off the kammback until my underbody is done. I am torn between doing it or not, but I still really want to complete it. I have all the materials I think I will need. I'll see more after I finish the underbody and I can evaluate my coroplast supply.
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Good luck! |
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06-05-2013, 11:31 PM
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#28 (permalink)
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Hydrogen > EV
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Quote:
Originally Posted by Xist
Good luck!
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Got the underbody done! It looks great, but I am worried about its durability to under carriage heat. |
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06-06-2013, 12:43 AM
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#29 (permalink)
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Not Doug
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Quote:
Originally Posted by UltArc
Got the underbody done! It looks great, but I am worried about its durability to under carriage heat.
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No pictures? I thought that we were friends! 
Those would have been better when it was on the lift, of course...
I guess that I should have thought of that before...
Even though the mechanic did it, will you please describe the materials that you bought and how he did it? |
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06-06-2013, 07:12 PM
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#30 (permalink)
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Hydrogen > EV
Join Date: Apr 2012
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Quote:
Originally Posted by Xist
No pictures? I thought that we were friends!
Those would have been better when it was on the lift, of course...
I guess that I should have thought of that before...
Even though the mechanic did it, will you please describe the materials that you bought and how he did it? |
I have been crunched for time, and the few photos I was able to take were while he was dropping it, as we were rushing. And, they are on my mobile phone.
Long story-
Planned to take an hour, as he was supposed to help/do it.
He didn't help, and it was up too high and I was without my tools/equipment.
SO, it took almost two hours. I used three poly carbonate portions.
Rear was a four by eight piece- cut to slide up and into my rear valance.
The next was four feet wide, but I don't know the length-it was two inches over lapping my rear panel, and up to the cross bar just behind my engine-so only the front panel needs to be removed for an oil change.
The front panel was 32 inches by 26ish.
I just used metal pieces to attach it. I made six cuts in the board for one attachment, as it was in a shape like an E, except there were two =, and one |
So my metal pieces looked like this:
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Then I placed it underneath, and ran the zip tie though the board, over the component on the vehicle, back through the board, and secured, the metal piece closest to the ground, then board, then car underbody.
The front piece uses four attach points, the second uses five, and the third uses seven. Images to come!
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