Windows Down = Unbearable Wind Buffeting/Percussion - Page 3

Jsreo · 11-10-2020, 02:17 PM

If I crack the passenger window just a bit (a few mm) it goes away

JSH · 11-10-2020, 02:23 PM

Yea, if want to have the driver's glass down, you need to lower the pass glass a fraction

shoe5163 · 11-10-2020, 02:43 PM

Not a problem with a sunroof.

R3ctivision · 11-10-2020, 03:52 PM

I have extreme buffeting problems at high speeds on track with both windows fully down. It hurts my ears even with a helmet on. I guess I can be the one to try rain deflectors as a hack attempt..

Staves · 11-10-2020, 05:25 PM

Nope. When it’s 75 or above. Both windows down all the time. Hwy included. Love it. No sunroof. My 2015 Mustang GT was the same. Experience little to no buffetting from either.

kropscamaro16 · 11-10-2020, 05:57 PM

only time i have both windows down is on track but i have my baclava and helmet on so doesnt both me

wwiiavfan · 11-10-2020, 06:09 PM

Quote:

Originally Posted by shoe5163

Not a problem with a sunroof.

That’s because the issue is the headliner on a non-sunroof car has little to no support in the center. So the headliner bounces up & down with the oscillating air pressure, just like a giant speaker. With a sunroof, there isn’t much unsupported area, so it doesn’t get to vibrating like that.

CHASLT1 · 11-10-2020, 06:35 PM

I never noticed. But if i can ever get past 45mph i will try it out in my new LT1.

MatthewAMEL · 11-10-2020, 08:18 PM

Quote:

Originally Posted by R3ctivision

I have extreme buffeting problems at high speeds on track with both windows fully down. It hurts my ears even with a helmet on. I guess I can be the one to try rain deflectors as a hack attempt..

That's weird. I run at Daytona 2-3 times a year and haven't had the buffeting problem at 170MPH.

With one window down, it's unbearable, but not with both.

3.8TransAM · 11-11-2020, 04:10 AM

Sam Strano developed small deflectors that go on the mirrors. Might be worth investigating. It's my plan when I get my 1LE

jamala00 · 11-11-2020, 05:50 AM

Have this in all my vehicles not just the Camaro. (With one window down) Either have to open both windows, (or one window and sunroof if you have one). In all my other vehicles I open my window and crack open a back window.

Nothing like an SS · 11-11-2020, 06:22 AM

Quote:

Originally Posted by jamala00

Have this in all my vehicles not just the Camaro. (With one window down) Either have to open both windows, (or one window and sunroof if you have one). In all my other vehicles I open my window and crack open a back window.

I'm thinking cracking the back window in a Camaro may not work so well.....lol!!!

I agree, as long as I open the passenger window some, the buffeting is not bad, still present, but not an issue. One window, oh lord, that is painful!

I prefer to leave the windows shut 99% of the time, street driving anyway.

gtfoxy · 11-11-2020, 09:21 AM

Quote:

Originally Posted by geaux_tigerss

I ride with my windows down all of the time. Pretty much daily on my evening commute. I don't have buffeting like you are describing. On a side, note, this was an interesting find - particularly the top comment.

https://www.reddit.com/r/askscience/...e_window_down/

The vertices created from the pillar are what is the main thing I focused on when I started researching it years ago.

I first experienced this when we got our first Highlander back in 13. It is unbearable, & anecdotally or 19 is just as bad. What I’ve come up with is newer vehicles have a forward facing lip on the windshield side. I managed to dig up some wind tunnel vids & could see some swirling around that lip.

The air mass is moving omnidirectional at that juncture. Some air moving along the windshield plain, trapped by the lip, another portion of the mass is moving to the side. To the best I can ascertain is the resonate frequency of this turbulence is transferred to the air mas moving past the window opening.

I get the math involved in the Helmotz Resonator, but it boils down to dynamic air pressure changes & static air pressure mass within the cab.

Quote:

Originally Posted by DenverTaco07

My understanding is that many cars modern cars have this issue because aerodynamics have improved so much that when the window is opened it presents interference in the...

oh here, read this:

https://www.caranddriver.com/news/a1...ne-car-window/

https://jalopnik.com/why-do-slightly...oun-1447498738

basically it happens more now "because racecar".

More aerodynamic does mean the air displaced by the vehicle volume as it moves is not being transferred to the air it is displacing, that changes the relative velocity between the two masses. Keep in mind this is a relative increase or decrease as a percentage of drag coefficient.

I still think that pillar shape & angle have something to do with it.

Coded4SS · 11-11-2020, 10:55 AM

Quote:

Originally Posted by R3ctivision

I have extreme buffeting problems at high speeds on track with both windows fully down. It hurts my ears even with a helmet on. I guess I can be the one to try rain deflectors as a hack attempt..

I noticed it's worse with the back seat removed

11-10-2020, 02:23 PM	#30
JSH Drives: '20 ZLE Join Date: Jun 2020 Location: Mile High Posts: 3,562	Yea, if want to have the driver's glass down, you need to lower the pass glass a fraction __________________ '20 ZL1 1LE A10, OEM short block, LME heads/valve train, E2650. 100+ octanes, no eth, no meth, no N2O. 2/23 - 1031/1004 wheel. 4/23 - 1.41/9.61/145 at DA 7000 ft. (only made five passes). 2/24 - LME 390, E2650, FBO, 100 oct.; 1116hp/ 1063tq; 109 oct. dyno next.

11-10-2020, 03:52 PM	#32
R3ctivision 1LE Convert Drives: 2018 ZLE Join Date: Apr 2017 Location: Mountain View, CA Posts: 367	I have extreme buffeting problems at high speeds on track with both windows fully down. It hurts my ears even with a helmet on. I guess I can be the one to try rain deflectors as a hack attempt.. __________________ 2018 Camaro ZL1 1LE (Red Hot) 2002 BMW Spec E46 race car (Lizard Green) Previous cars: - 2018 Miata RF GT (Machine Gray/Auburn) - 2017 Camaro 1SS 1LE (Summit White) - 2008 BMW 135i (Montego Blue) - 1996 BMW 328i (Arctic Silver)

11-10-2020, 05:25 PM	#33
Staves Drives: women crazy Join Date: Aug 2020 Location: CA Posts: 698	Nope. When it’s 75 or above. Both windows down all the time. Hwy included. Love it. No sunroof. My 2015 Mustang GT was the same. Experience little to no buffetting from either. __________________ ‘19 1SS A10, Borla S-type Non-NPP-SOLD

11-10-2020, 05:57 PM	#34
kropscamaro16 Drives: 2016 1ss camaro Join Date: Feb 2016 Location: 909 Posts: 9,817	only time i have both windows down is on track but i have my baclava and helmet on so doesnt both me __________________ 16 1SS NIGHTFALL GRAY METALLIC WITH NPP #BECAUSERACECAR #SAVETHEMANUALS

11-10-2020, 02:17 PM	#29
Jsreo Drives: 2017 2SS Manual Join Date: Apr 2017 Location: Atlanta GA Posts: 373	If I crack the passenger window just a bit (a few mm) it goes away

11-10-2020, 02:43 PM	#31
shoe5163 Drives: 2017 50th Anniversary SS Join Date: Mar 2016 Location: BG, Ohio Posts: 155	Not a problem with a sunroof.

11-10-2020, 06:35 PM	#36
CHASLT1 Drives: 2021 Camaro LT1 Join Date: Sep 2020 Location: Tampa FL area Posts: 795	I never noticed. But if i can ever get past 45mph i will try it out in my new LT1.

11-11-2020, 04:10 AM	#38
3.8TransAM Drives: SS 1LE, 89 TTA, 91 GTA, 91 Formula Join Date: Jul 2019 Location: NW IN Posts: 600	Sam Strano developed small deflectors that go on the mirrors. Might be worth investigating. It's my plan when I get my 1LE

11-11-2020, 05:50 AM	#39
jamala00 Drives: 2016 Camaro 2SS Hyper Blue Metallic Join Date: May 2020 Location: WI Posts: 2,451	Have this in all my vehicles not just the Camaro. (With one window down) Either have to open both windows, (or one window and sunroof if you have one). In all my other vehicles I open my window and crack open a back window.

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