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Old 05-27-2015, 03:42 PM   #21 (permalink)
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Quote:
Originally Posted by BabyDiesel View Post
I am interested to see if there are any benefits to your nose. Your frontal area has not increased by much IMO. The flaring out for the fender skirts stick out like a sore thumb (no pun intended) in the front photo, but this may decrease the drag in that area. TEST IT PLEASE!

I am reminded of basjoos saying that he saw/felt a difference when he put his nose on the Aerocivic. You can't tell until you try. Good work.
Basjoos also didn't add a square foot or more of frontal area (appx. a 5% increase) with his front end. I would expect all gains from the extended bumper to be lost in the widebody kit here. Check out the Aerocivic thread; the moving wheel skirts are more work, but there's no denying their effectiveness. You've done a lot of work; I just hope you see some gains from it! Work smart, not hard.

http://ecomodder.com/forum/showthrea....html#post2112
http://ecomodder.com/forum/showthrea...tml#post322391

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Old 05-27-2015, 04:40 PM   #22 (permalink)
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My head-on with a raccoon Xmas 2012 in an unmodified Toyota Yaris did some several damage to the OEM plastic bumper, A/C evaporator and radiator. Even managed to push the front cross member under the radiator core support back a centimeter or so. No that mock up would not leave much of a raccoon at all.

As a mock up its is interesting. How is the bumper actually supported? My interests is how do you avoid the bumper hitting the windshield or another car behind you if it contacts something in the roadway? Same question with regard to the outboard wheel skirts. Is the final design to be in metal, fiberglass, or carbon fiber? All three will need a support structure, correct?

Also why not moved the radiator under the car completely? It might make the nose job more Aero efficient. and could solve some of the cone support issues.

With the front extension you will likely need faster spring rates and more aggressive than stock suspension. You don't want a road joist to cause road impact issues.
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Old 05-27-2015, 06:24 PM   #23 (permalink)
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Quote:
Originally Posted by Cd View Post
Well. At least you are actually DOING SOMETHING, versus sitting in front of a computer.
So kudos for that.

No disrespect meant, but what did you intend to accomplish with this ?

The front of the car already has attached flow, and you could achieve the same results ( if this was done for aerodynamics ) by simply adding a simple grille block.

One fella here got great results with an airdam. The car is much like yours.

Cars don't need to have pointed ( or even super rounded ) noses until around 300 mph.

Aerohead, you out there ?
I suppose this is a way to validate the claims made by the big dogs.
Hucho WOULD say that the nose was already 'optimized' and 'saturated.' basjoos has claimed a benefit on AEROCIVIC.
If we consider 'elliptical' section bodies,then maybe there's some 'talking' space.They have very similar drag as a function of fineness ratio.The sticking point is the windshield area.To do glass at these angles means zero outward vision.
From Hucho's work on the 1st-gen Golf/Rabbit we can see Prandtl's lines of discontinuity at work.The air is 'avoiding' extreme acceleration,displacing around the nose long before it ever gets there,as if the nose was already 'pointy.'

The flow over the 'ideal' nose is no better,and drag no lower

-------------------------------------------------------------------------
Some land speed record cars have 'pointy' noses,but they're in transonic,compressible flow,where shockwave drag must be addressed.
GM's Firebird I

has no lower drag than today's FIAT Cinquento
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Last edited by aerohead; 05-27-2015 at 06:33 PM.. Reason: add ideal nose
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Old 05-27-2015, 08:47 PM   #24 (permalink)
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Aerohead - you must get tired of having to repeat yourself a lot huh?
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Old 05-27-2015, 09:20 PM   #25 (permalink)
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Forget you heard that altogether.
I think he was talking about anatomy, not cars.
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Old 05-27-2015, 10:03 PM   #26 (permalink)
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Yikes!
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Old 05-27-2015, 10:11 PM   #27 (permalink)
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Aerohead - you must get tired of having to repeat yourself a lot huh?
I've read his post at least 3-4 times now in different threads.
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Old 05-27-2015, 10:13 PM   #28 (permalink)
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Quote:
Originally Posted by Sven7 View Post
Basjoos also didn't add a square foot or more of frontal area (appx. a 5% increase) with his front end. I would expect all gains from the extended bumper to be lost in the widebody kit here. Check out the Aerocivic thread; the moving wheel skirts are more work, but there's no denying their effectiveness. You've done a lot of work; I just hope you see some gains from it! Work smart, not hard.

http://ecomodder.com/forum/showthrea....html#post2112
http://ecomodder.com/forum/showthrea...tml#post322391

Yeah, the more I think about all of this, the more I don't like the idea of increasing frontal area at all. It just doesn't make too much sense.

On a positive note, more people are asking me what kind of mpg I get instead of asking me what's wrong with the car.
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Old 05-28-2015, 10:06 AM   #29 (permalink)
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3) I had nothing better to do with my time and it was fun
Experimenting, too. I'm a fan.
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Transmission type Efficiency
Manual neutral engine off.100% @MPG <----- Fun Fact.
Manual 1:1 gear ratio .......98%
CVT belt ............................88%
Automatic .........................86%

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Old 05-28-2015, 10:12 AM   #30 (permalink)
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I especially like the idea of gaining space to duct air to the radiator.

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Quote:
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Transmission type Efficiency
Manual neutral engine off.100% @MPG <----- Fun Fact.
Manual 1:1 gear ratio .......98%
CVT belt ............................88%
Automatic .........................86%

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