Chin spoiler - is this part of the sports pkg?

sbkim · 02-14-2009, 09:12 PM

Never saw this but evidently you can paint to match

Is this part of sport pkg? I haven't seen it before.

eBay Motors: 2009 370Z FRONT CHIN SPOILER PAINTED TO MATCH (item 270333432888 end time Feb-19-09 20:00:36 PST)

Never mind - I see that sports pkg have em. I've seen a few cars with sport pkg without this spoiler. Anyone going to paint their to match?

SoCal 370Z · 02-14-2009, 09:32 PM

Quote:

Originally Posted by sbkim

Anyone going to paint their to match?

Too much of a sacrificial part to paint IMHO. We left our off, for now.

BanningZ · 02-14-2009, 10:30 PM

Quote:

Originally Posted by SoCal 370Z

Too much of a sacrificial part to paint IMHO. We left our off, for now.

x2

On the first day of ownership people were scraping these up. Its just a redesigned scrape plate. all cars have em, and i could never see painting one.

What I am curious of is if it truly makes an aerodynamic difference Or just adds weight.

epod86 · 02-22-2009, 12:38 AM

My basic aerodynamics tells me it will make some sort of difference. what it's intended to do is "trip" airflow passing under the car from laminar flow to turbulent flow. The reason being is that laminar flow under the car can contribute to the 'airfoil' effect, in that the shape of a car resemble and airfoil and a car tends to generate life just from it's shape. only laminar flow is consistent enough to generate a pressure gradient between the top and bottom due to the curvature of the car. By inducing turbulent flow, the airfoil effect is reduced. the airfoil effect also has the downside of introducing wake drag, a side effect of being shaped like a airfoil. By having a front spoiler that introduces turbulence, and a rear spoiler that produces down-force, alters the flow direction, and introduces turbulence, you get a car with less lift and less drag. this can also be accomplished by changing the cars "angle of attack," sometimes called the "rake" of the car, or how high the back end is, thought raising the back end does not decrease drag as much as changing the flow profile.

Hope this helps give you an idea. But in general, aerodynamics is a game of millimeters. On a modern jet liner, a difference of 10^-9 (.0000001% or less) in the coefficient of drag is 25-50 passenger miles (airplane can carry additional 25-50 passenger on it's designed leg length, weird metric name, I know). having a .01 difference in drag (from .30 to .29) is 3%, which is pretty substantial. Plus the claims of zero lift, you've got pretty impressive aerodynamics in addition to a car that's already a steal for it's price.

Asheth · 02-22-2009, 04:49 AM

Quote:

Originally Posted by epod86

My basic aerodynamics tells me it will make some sort of difference. what it's intended to do is "trip" airflow passing under the car from laminar flow to turbulent flow. The reason being is that laminar flow under the car can contribute to the 'airfoil' effect, in that the shape of a car resemble and airfoil and a car tends to generate life just from it's shape. only laminar flow is consistent enough to generate a pressure gradient between the top and bottom due to the curvature of the car. By inducing turbulent flow, the airfoil effect is reduced. the airfoil effect also has the downside of introducing wake drag, a side effect of being shaped like a airfoil. By having a front spoiler that introduces turbulence, and a rear spoiler that produces down-force, alters the flow direction, and introduces turbulence, you get a car with less lift and less drag. this can also be accomplished by changing the cars "angle of attack," sometimes called the "rake" of the car, or how high the back end is, thought raising the back end does not decrease drag as much as changing the flow profile.

Hope this helps give you an idea. But in general, aerodynamics is a game of millimeters. On a modern jet liner, a difference of 10^-9 (.0000001% or less) in the coefficient of drag is 25-50 passenger miles (airplane can carry additional 25-50 passenger on it's designed leg length, weird metric name, I know). having a .01 difference in drag (from .30 to .29) is 3%, which is pretty substantial. Plus the claims of zero lift, you've got pretty impressive aerodynamics in addition to a car that's already a steal for it's price.

Excellent info +1

3SeventyZ · 02-22-2009, 06:27 AM

I opted to not install the chin spoiler when I purchased the sport Z.
I think it looks cleaner without.

m4a1mustang · 02-22-2009, 10:24 AM

I like it. I think it makes it look a little more aggressive and balances the rear spoiler out a bit with the sport package. I guess I'm partial to chin spoilers, though. Both of my Mustangs had them.

DIGItonium · 02-22-2009, 01:00 PM

It is going to get torn apart especially with the driveways and holes we have here.

epod86 · 02-22-2009, 01:49 PM

anyone have the actual measurements on how far off the the ground it is?

rsboland · 02-22-2009, 03:54 PM

I have owned mine for two weeks and have already busted the clip on the right side off.

If you plan on driving it around suburb areas, it's going to be broken in no time. But, I'll probably be a sucker and go fix it anyway. Haha.

epod86 · 02-22-2009, 07:33 PM

Here's another question: how easy is it to pop on and off? If you have to jack it up to get at some screws, well, it might be worth keeping off. If it can be popped on and off, pop it on when you're at the track or know you won't come across a speed-bump/ramp/pothole/real road

.

SoCal 370Z · 02-22-2009, 07:52 PM

Quote:

Originally Posted by epod86

Here's another question: how easy is it to pop on and off? If you have to jack it up to get at some screws, well, it might be worth keeping off. If it can be popped on and off, pop it on when you're at the track or know you won't come across a speed-bump/ramp/pothole/real road

.

Unfortunately, there is no popping on and off as it is pop-riveted in place. I am going to be using threaded rivets so I can use fasteners versus pop rivets.

epod86 · 02-23-2009, 01:58 PM

Quote:

Originally Posted by SoCal 370Z

Unfortunately, there is no popping on and off as it is pop-riveted in place. I am going to be using threaded rivets so I can use fasteners versus pop rivets.

nuttbunnies. Wonder if it could be rigged up with a linear actuator, put a switch in the cabin. Would that be ricing it too much?

DIGItonium · 02-23-2009, 09:11 PM

Quote:

Originally Posted by epod86

nuttbunnies. Wonder if it could be rigged up with a linear actuator, put a switch in the cabin. Would that be ricing it too much?

You might end up knocking out the linear actuators before you get to scrape the lip lol.

epod86 · 02-24-2009, 12:05 PM

Wonder if a really loose dashpot cylinder would work. Plastic probably isn't heavy enough to reset it down after a strike though. Probably not stiff enough either. Guess that 3% is going to fall off eventually huh?

02-14-2009, 09:12 PM	#1 (permalink)
sbkim Base Member Join Date: Jan 2009 Location: nj Posts: 177 Drives: RRSC Rep Power: 17	Chin spoiler - is this part of the sports pkg? Never saw this but evidently you can paint to match Is this part of sport pkg? I haven't seen it before. eBay Motors: 2009 370Z FRONT CHIN SPOILER PAINTED TO MATCH (item 270333432888 end time Feb-19-09 20:00:36 PST) Never mind - I see that sports pkg have em. I've seen a few cars with sport pkg without this spoiler. Anyone going to paint their to match? Last edited by sbkim; 02-14-2009 at 09:23 PM.

02-22-2009, 06:27 AM	#6 (permalink)
3SeventyZ Track Member Join Date: Dec 2008 Location: MD/DE Posts: 626 Drives: 350Z, 370Z, SRT8 Rep Power: 476	I opted to not install the chin spoiler when I purchased the sport Z. I think it looks cleaner without. __________________ 2009 Magnetic Black 370Z Sport 6MT

02-22-2009, 10:24 AM	#7 (permalink)
m4a1mustang A True Z Fanatic Join Date: Feb 2009 Location: Northern VA Posts: 55,385 Drives: on two wheels Rep Power: 6962	I like it. I think it makes it look a little more aggressive and balances the rear spoiler out a bit with the sport package. I guess I'm partial to chin spoilers, though. Both of my Mustangs had them. __________________ - Steve Zs & Coffee - Saturdays at 10AM in Fairfax, VA and Columbia, MD (Click the banner!) LIKE us on Facebook!

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02-22-2009, 12:38 AM	#4 (permalink)
epod86 Base Member Join Date: Feb 2009 Location: Houston, TX Posts: 229 Drives: 06 Mustang GT BK M5 Rep Power: 241	My basic aerodynamics tells me it will make some sort of difference. what it's intended to do is "trip" airflow passing under the car from laminar flow to turbulent flow. The reason being is that laminar flow under the car can contribute to the 'airfoil' effect, in that the shape of a car resemble and airfoil and a car tends to generate life just from it's shape. only laminar flow is consistent enough to generate a pressure gradient between the top and bottom due to the curvature of the car. By inducing turbulent flow, the airfoil effect is reduced. the airfoil effect also has the downside of introducing wake drag, a side effect of being shaped like a airfoil. By having a front spoiler that introduces turbulence, and a rear spoiler that produces down-force, alters the flow direction, and introduces turbulence, you get a car with less lift and less drag. this can also be accomplished by changing the cars "angle of attack," sometimes called the "rake" of the car, or how high the back end is, thought raising the back end does not decrease drag as much as changing the flow profile. Hope this helps give you an idea. But in general, aerodynamics is a game of millimeters. On a modern jet liner, a difference of 10^-9 (.0000001% or less) in the coefficient of drag is 25-50 passenger miles (airplane can carry additional 25-50 passenger on it's designed leg length, weird metric name, I know). having a .01 difference in drag (from .30 to .29) is 3%, which is pretty substantial. Plus the claims of zero lift, you've got pretty impressive aerodynamics in addition to a car that's already a steal for it's price.

02-22-2009, 01:00 PM	#8 (permalink)
DIGItonium A True Z Fanatic Join Date: Jan 2009 Location: Kansas Posts: 3,800 Drives: 09 Z34-TT 6MT Rep Power: 43	It is going to get torn apart especially with the driveways and holes we have here.

02-22-2009, 01:49 PM	#9 (permalink)
epod86 Base Member Join Date: Feb 2009 Location: Houston, TX Posts: 229 Drives: 06 Mustang GT BK M5 Rep Power: 241	anyone have the actual measurements on how far off the the ground it is?

02-22-2009, 03:54 PM	#10 (permalink)
rsboland Base Member Join Date: Feb 2009 Location: Arlington, VA Posts: 17 Drives: 09' 370Z MB M6 Rep Power: 16	I have owned mine for two weeks and have already busted the clip on the right side off. If you plan on driving it around suburb areas, it's going to be broken in no time. But, I'll probably be a sucker and go fix it anyway. Haha.

02-22-2009, 07:33 PM	#11 (permalink)
epod86 Base Member Join Date: Feb 2009 Location: Houston, TX Posts: 229 Drives: 06 Mustang GT BK M5 Rep Power: 241	Here's another question: how easy is it to pop on and off? If you have to jack it up to get at some screws, well, it might be worth keeping off. If it can be popped on and off, pop it on when you're at the track or know you won't come across a speed-bump/ramp/pothole/real road .

02-24-2009, 12:05 PM	#15 (permalink)
epod86 Base Member Join Date: Feb 2009 Location: Houston, TX Posts: 229 Drives: 06 Mustang GT BK M5 Rep Power: 241	Wonder if a really loose dashpot cylinder would work. Plastic probably isn't heavy enough to reset it down after a strike though. Probably not stiff enough either. Guess that 3% is going to fall off eventually huh?