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Old 10-12-2014, 01:34 AM   #161 (permalink)
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That's actually pretty moderate. I saw push trucks on the street in Wendover that looked like they should be in the snerodynamics thread.

What I'm beginnning to not understand is the unpainted Ford iron from the 1920-30s that's been out there every year for the last 40.




I washed my car four days in a row at coin-op car washes. I washed out the wheel wells until there was water spewing through the fender welting. The next two days I put each end up on ramps and crawled under with a pressure washer and blew still more chunks out. If it didn't have rusty VW heater channels before, well...

Next year I'll just fine a freshwater creek and ford it a couple of times. I was really missing mudpuddles.

You know what The Salt supposed to look like, right? Here's the access road this year:


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Old 10-21-2014, 08:55 PM   #162 (permalink)
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video

Phil - is it a 1994 or 1995 model year? John Gilkinson's latest article says '95, but I've seen '94 around here as well.

Some moving pictures:

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Old 10-22-2014, 12:41 AM   #163 (permalink)
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You showed the still frame that surprised me (I see after I captured, resized and uploaded the same frame). Not so much that it wraps to the side instead of over the top, but that the mirror [apparently] forces the flow half-way down the door a few feet back.
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Old 10-22-2014, 11:39 AM   #164 (permalink)
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I always wondered if Phil's hood treatment was doing any good. It has been an article of faith that the rear is more important than the front.

The smoke tells the tale.

The hood slope reduces the vertical wind velocity at the windshield and helps maintain the smooth flow over the top until it can engage the bed cover (I don't think what's on Phil's bed can be called an 'aerocap' in the way us mortals know the word).
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Old 10-22-2014, 02:02 PM   #165 (permalink)
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Beautiful!
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Old 10-22-2014, 06:31 PM   #166 (permalink)
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T-100 year model

John's years must be weighing on him ( as if I wasn't succumbing to the same thing!),and I never get to edit anything he prints accepting the 32-mpg at 100-mph article.
The T-100 is a '94 model.Your brain is operating at max efficiency!
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Old 10-22-2014, 06:58 PM   #167 (permalink)
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Surprising from how high up the smoke trail still goes down under the front bumper...
Would an air dam or duck bill bumper help? Or is the bottom so smooth that is does not matter much?

I was thinking about blocking my upper grill and having a slanted plate over the lower grill so it would take air from below, would that be a good idea?
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Old 10-22-2014, 07:00 PM   #168 (permalink)
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half-way down the door

Quote:
Originally Posted by freebeard View Post
You showed the still frame that surprised me (I see after I captured, resized and uploaded the same frame). Not so much that it wraps to the side instead of over the top, but that the mirror [apparently] forces the flow half-way down the door a few feet back.
This is something of a surprise.It's Daniel Bournouli's Theorem in action.Pressures and velocities at play along the body.
There is a great CFD image of Ford's F-150 online and the streamlines are behaving in a similar fashion along the sides near the door.They tried 12-different side-view mirrors on the 2015 F-150.
Makes the camera systems all that more attractive.
The 'naked' T-100 absorbs 47-hp at 70-mph according to CAR and DRIVER testing,and the side mirrors are absorbing 1-hp at 75-mpg according to Tyler Stories Darko spreadsheet.
At Bonneville they let the guys delete the mirrors entirely.
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Old 10-22-2014, 07:10 PM   #169 (permalink)
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under the bumper

Quote:
Originally Posted by RedDevil View Post
Surprising from how high up the smoke trail still goes down under the front bumper...
Would an air dam or duck bill bumper help? Or is the bottom so smooth that is does not matter much?

I was thinking about blocking my upper grill and having a slanted plate over the lower grill so it would take air from below, would that be a good idea?
You can see from the smoke that once the air makes it past the air dam,that a venturi is forming.If I had a small radius at the lower edge I could get rid of that.There is a complete belly pan under the truck at the time of the wind tunnel testing.
As it sits,the air dam creates 30-pounds of downforce at 135-mph,so there is a little induced drag associated with it.
As to your car,you need to inspect the region behind the grille leading to the radiator.Typically,the lower inlet could be nearest the frontal stagnation point,but maybe not.
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Old 10-22-2014, 07:18 PM   #170 (permalink)
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video ( MetroMPG magic)

Darin,I have to tip my hat to you and your video 'chops'! Top shelf all the way.
We'll see about an Academy Award nomination for your Titles and Editing,'n ......................................
Thanks for all you do! I feel like it will become a great physics classroom experience for many,many onlookers.

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