mud flap aerodynamic reprocussions

pwn · 03-29-2008, 11:42 PM

I'm on my phone, so forgive me for being brief

. Any idea how much say RA flaps effect gas mileage? And what does it do to the stability of the vehicle? Thanks.

Bishop · 03-30-2008, 12:01 AM

rally armor claims it doesnt affect the aerodynamics at all... i dont doubt it either.... didn't effect the times on the 1/4 mile they ran, with and without the flaps.... if ya think about it, theres not going to be any wind resistance where the flaps are

LSE · 03-30-2008, 08:16 AM

I think it affects some but only at very high speeds...this is where you're wasting fuel because you have side mirrors, a radiator etc etc. So I wouldn't sweat it.

I'm putting mine on soon.

STI_SLC · 03-30-2008, 09:12 AM

ahahhhahahahahah

Emissary · 03-30-2008, 09:27 AM

My only concern is that in increases the width of the vehicle for AutoX...I'll probably take the flaps off for AutoX to avoid knocking over an extra cone or two...

pwn · 03-30-2008, 12:39 PM

haha good point. Auto x might get interesting

pwn · 03-30-2008, 12:41 PM

Quote:

Originally Posted by STI_SLC

ahahhhahahahahah

youd be surprised what can make a car unstable at highspeeds.

USNSTI · 03-30-2008, 01:00 PM

I have them, and I have never felt any unstableness (instability?) at high speeds. They are behind the tires remember, and they stick out less than an inch....

pwn · 03-30-2008, 01:02 PM

Quote:

Originally Posted by USNSTI

I have them, and I have never felt any unstableness (instability?) at high speeds. They are behind the tires remember, and they stick out less than an inch....

which is why I asked

05_GD7 · 03-30-2008, 03:26 PM

The amount they stick out is probably still in the boundary layer - so little to no drag.

**Rallyarmor** · 03-30-2008, 04:33 PM

We too can confirm no mileage changes experienced as well

(addressed in previous thread(s)

Here is the front profile (slight angle/tilt to the right side - 08+ body similar) with the flaps installed. As you can clearly see they do not protrude excessively beyond the body. just enough for great protection.

Thanks much
R/A

pwn · 03-30-2008, 05:10 PM

Awesome, thanks.

hairlesswookiee · 03-30-2008, 06:44 PM

here's mine:

howboutthemapplz · 03-30-2008, 06:54 PM

Quote:

Originally Posted by LSE

I think it affects some but only at very high speeds...this is where you're wasting fuel because you have side mirrors, a radiator etc etc.

im wasting fuel becuse my car catches the wind..

now i am going to sell it.

jk sorry i had to do that!

Quote:

Originally Posted by Rallyarmor

We too can confirm no mileage changes experienced as well

(addressed in previous thread(s)

Here is the front profile (slight angle/tilt to the right side - 08+ body similar) with the flaps installed. As you can clearly see they do not protrude excessively beyond the body. just enough for great protection.

Thanks much
R/A

^Another reason R/A rocks and you should buy their products.
they are one of my favorite mods. They actually do protect the paint!

\/Below. Yes they are RA UR!

toogood · 03-30-2008, 07:06 PM

those r/a's are sweet looking...but its too late for me to get'em...the damage has been done...lol

i heard that the flaps actually increase hp by 2%

jk

03-29-2008, 11:42 PM	#1
pwn Professional STI Driver Car: WRB 08 STI Fav Mod: Only one - Cobb AP Location: SF Bay Area Posts: 412 Join Date: Jan 2007 Trader Rating: (0)	mud flap aerodynamic reprocussions I'm on my phone, so forgive me for being brief . Any idea how much say RA flaps effect gas mileage? And what does it do to the stability of the vehicle? Thanks. This ad is not endorsed by this member. Please register or login to hide this ad.

03-30-2008, 12:01 AM	#2
Bishop HowTo Contributor Car: 07 OBP STi Fav Mod: Stg 2 - STRI gauges Location: Niwot, CO Posts: 2,277 Join Date: Oct 2007 Trader Rating: (0)	Re: mud flap aerodynamic reprocussions rally armor claims it doesnt affect the aerodynamics at all... i dont doubt it either.... didn't effect the times on the 1/4 mile they ran, with and without the flaps.... if ya think about it, theres not going to be any wind resistance where the flaps are

03-30-2008, 08:16 AM	#3
LSE Professional STI Racer Car: 06 STI WRB Fav Mod: Defi Gauges Location: Bethlehem PA Posts: 849 Join Date: Dec 2004 Trader Rating: (0)	Re: mud flap aerodynamic reprocussions I think it affects some but only at very high speeds...this is where you're wasting fuel because you have side mirrors, a radiator etc etc. So I wouldn't sweat it. I'm putting mine on soon.

03-30-2008, 09:12 AM	#4
STI_SLC Professional STI Driver Car: 06 AssPen STi Fav Mod: KW V3's Location: MillerMotorsportsPark,UT. Posts: 461 Join Date: Dec 2006 Trader Rating: (0)	Re: mud flap aerodynamic reprocussions ahahhhahahahahah

03-30-2008, 09:27 AM	#5
Emissary Junior STI Driver Car: 2008 STI (WRB/BBS) Location: Bend, OR Posts: 138 Join Date: Oct 2003 Trader Rating: (1)	Re: mud flap aerodynamic reprocussions My only concern is that in increases the width of the vehicle for AutoX...I'll probably take the flaps off for AutoX to avoid knocking over an extra cone or two...

03-30-2008, 12:39 PM	#6
pwn Professional STI Driver Car: WRB 08 STI Fav Mod: Only one - Cobb AP Location: SF Bay Area Posts: 412 Join Date: Jan 2007 Trader Rating: (0)	Re: mud flap aerodynamic reprocussions haha good point. Auto x might get interesting

03-30-2008, 01:00 PM	#8
USNSTI Silver Member Car: OBP 07 STI Fav Mod: Boost gauge Location: San Diego Posts: 1,414 Join Date: Dec 2006 Trader Rating: (6)	Re: mud flap aerodynamic reprocussions I have them, and I have never felt any unstableness (instability?) at high speeds. They are behind the tires remember, and they stick out less than an inch....

03-30-2008, 03:26 PM	#10
05_GD7 Spec C Club Car: 05 STi - Black Fav Mod: No Lien Location: Ontario, Canada Posts: 1,870 Join Date: Mar 2006 Trader Rating: (2)	Re: mud flap aerodynamic reprocussions The amount they stick out is probably still in the boundary layer - so little to no drag.

03-30-2008, 04:33 PM	#11
Rallyarmor Authorized Manufacturer Car: 99 Impreza WRX Posts: 239 Join Date: Jan 2004 Trader Rating: (3)	Re: mud flap aerodynamic reprocussions We too can confirm no mileage changes experienced as well (addressed in previous thread(s) Here is the front profile (slight angle/tilt to the right side - 08+ body similar) with the flaps installed. As you can clearly see they do not protrude excessively beyond the body. just enough for great protection. Thanks much R/A

03-30-2008, 05:10 PM	#12
pwn Professional STI Driver Car: WRB 08 STI Fav Mod: Only one - Cobb AP Location: SF Bay Area Posts: 412 Join Date: Jan 2007 Trader Rating: (0)	Re: mud flap aerodynamic reprocussions Awesome, thanks.

03-30-2008, 06:44 PM	#13
hairlesswookiee Senior STI Driver Car: 2008 WRB STI Fav Mod: Cobb AccessPort Stage 1 Location: Tallahassee Posts: 355 Join Date: Feb 2008 Trader Rating: (0)	Re: mud flap aerodynamic reprocussions here's mine:

03-30-2008, 07:06 PM	#15
toogood Silver Member Car: wrb 06 STi Fav Mod: wingless and mis-fires Location: lackland afb, texas Posts: 1,030 Join Date: Nov 2007 Trader Rating: (0)	Re: mud flap aerodynamic reprocussions those r/a's are sweet looking...but its too late for me to get'em...the damage has been done...lol i heard that the flaps actually increase hp by 2% jk This ad is not endorsed by this member. Please register or login to hide this ad.