Downforce/Drag/Aero - Toyota GR86, 86, FR-S and Subaru BRZ Forum & Owners Community

JPRodney · 08-29-2017, 01:18 PM

Okay, well this guy made a decision that he possibly regrets. I recently purchased a Voltex Wing for a really really good deal. Installed fine and everything went smooth.

However I didn't account for the drag of the wing to be that strong. I daily commute 120km total to work and back. I realized that my gas milage took a small hit and I have to be harder on the accelerator with inclines - even if its slight just to maintain speed.

Since I love the wing a lot, I'm trying to think of ways to combat the drag. I'm new to modifying cars and to be honest - this is my first car under my name.

I was thinking of adding a splitter and rear diffuser, possibly getting the bottom as flat as possible, while still being able to service the car easily. Maybe the car just needs more power so I don't have to be so aggressive on the pedal - as we know the torque on these cars is lacking.

Any suggestions or help is greatly appreciated, thanks!

OND · 08-29-2017, 01:25 PM

Try to minimize the angle of attack?

Slammillionaire · 08-29-2017, 01:55 PM

You're problem here is literally the functionality of the wing. Get a smaller wing or replace it with a spoiler

chaoskaze · 08-29-2017, 01:58 PM

isn't that wing adjustable?

jvincent · 08-29-2017, 02:10 PM

Quote:

Originally Posted by JPRodney

I was thinking of adding a splitter and rear diffuser, possibly getting the bottom as flat as possible, while still being able to service the car easily. Maybe the car just needs more power so I don't have to be so aggressive on the pedal - as we know the torque on these cars is lacking.

What's your goal for the car?

You can't fight physics. A wing is always going to add drag. You can minimize it to some degree if it is adjustable.

A rear-diffuser will reduce drag somewhat, but I doubt it will fully offset the wing. Same for the splitter, but I believe it has even less effect than the diffuser.

Remember, the real goal of most aero mods, and 100% true of wings, is increased downforce in corners.

mav1178 · 08-29-2017, 02:32 PM

The only real answer in your case is to get rid of the wing.

Tcoat · 08-29-2017, 02:40 PM

Go FI?

NyC Zn6 · 08-29-2017, 02:45 PM

Quote:

Originally Posted by Tcoat

Go FI?

we have a winner

humfrz · 08-29-2017, 03:06 PM

Like @mav1178 suggests, get rid of it, OR ....... just remove it and put it back on for track days ...... or show and tell meets.

humfrz

LudwigMiles · 08-29-2017, 03:37 PM

Never mod your car unless you know exactly what limitation you're solving.
And at what cost they come. Wings add drag. That is their point.

Do you really need downforce at high speeds?
Do you even know at what speed your wing even helps your high speed cornering?

Sell the wing.

mrderp · 08-29-2017, 04:02 PM

If you love the wing:
Reduce its angle of attack.

Getting a splitter and a diffuser won't offset the drag from the wing. They sure won't offset the increased cost from running 120km daily with it either.

mrg666 · 08-29-2017, 04:35 PM

I would just get rid of that wing!

NeverInTime · 08-29-2017, 05:20 PM

I was looking at some pictures of the Voltex Wing - Type 1S for the BRZ, and it looks like you can adjust the angle of attack by changing the front screws. Other model Vortex wings based on what I can see from Google results are also adjustable too, so it looks like if you want to keep your wing you can reduce the angle of attack (i.e. make the wing flatter rather than more angled). You will still have some drag, but at least you can minimize it as best you can.

StraightOuttaCanadaEh · 08-29-2017, 05:38 PM

Underpanels as well

08-29-2017, 02:40 PM	#7
Tcoat Senior Member Join Date: Jul 2014 Drives: 2020 Hakone Location: London, Ont Posts: 69,845 Thanks: 61,656 Thanked 108,283 Times in 46,456 Posts Mentioned: 2495 Post(s) Tagged: 50 Thread(s)	Go FI? __________________ Racecar spelled backwards is Racecar, because Racecar.

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08-29-2017, 01:25 PM	#2
OND Senior Member Join Date: May 2016 Drives: 2023 BRZ Location: Houston, TX Posts: 208 Thanks: 174 Thanked 219 Times in 90 Posts Mentioned: 4 Post(s) Tagged: 0 Thread(s)	Try to minimize the angle of attack?

08-29-2017, 01:55 PM	#3
Slammillionaire Senior Member Join Date: Jan 2017 Drives: 2013 Hot Lava FRS Location: New Jersey Posts: 518 Thanks: 183 Thanked 527 Times in 259 Posts Mentioned: 1 Post(s) Tagged: 0 Thread(s)	You're problem here is literally the functionality of the wing. Get a smaller wing or replace it with a spoiler

08-29-2017, 01:58 PM	#4
chaoskaze The Fail Boat Join Date: Aug 2011 Drives: CWP S.B. Location: LasVegas Posts: 3,028 Thanks: 4,718 Thanked 1,293 Times in 873 Posts Mentioned: 19 Post(s) Tagged: 0 Thread(s)	isn't that wing adjustable?

08-29-2017, 02:32 PM	#6
mav1178 Senior Member Join Date: Apr 2013 Drives: 2005 Toyota Camry Location: 91745 Posts: 6,562 Thanks: 493 Thanked 6,092 Times in 3,029 Posts Mentioned: 95 Post(s) Tagged: 3 Thread(s)	The only real answer in your case is to get rid of the wing.

08-29-2017, 03:06 PM	#9
humfrz Senior Member Join Date: May 2013 Drives: 2013 FR-S, white, MT Location: Puyallup, WA Posts: 29,866 Thanks: 28,787 Thanked 31,813 Times in 16,424 Posts Mentioned: 708 Post(s) Tagged: 2 Thread(s)	Like @mav1178 suggests, get rid of it, OR ....... just remove it and put it back on for track days ...... or show and tell meets. humfrz

08-29-2017, 03:37 PM	#10
LudwigMiles Banned Join Date: Jul 2017 Drives: '13 BRZ Location: NY Posts: 232 Thanks: 17 Thanked 53 Times in 28 Posts Mentioned: 0 Post(s) Tagged: 0 Thread(s)	Never mod your car unless you know exactly what limitation you're solving. And at what cost they come. Wings add drag. That is their point. Do you really need downforce at high speeds? Do you even know at what speed your wing even helps your high speed cornering? Sell the wing.

08-29-2017, 04:02 PM	#11
mrderp ಠ_ಠ Join Date: Jan 2016 Drives: 860 SansOverspray Location: CA Posts: 209 Thanks: 164 Thanked 146 Times in 99 Posts Mentioned: 0 Post(s) Tagged: 0 Thread(s)	If you love the wing: Reduce its angle of attack. Getting a splitter and a diffuser won't offset the drag from the wing. They sure won't offset the increased cost from running 120km daily with it either.

08-29-2017, 05:20 PM	#13
NeverInTime Member Join Date: Jun 2017 Drives: '17 BRZ PP Location: Orange County, CA Posts: 76 Thanks: 71 Thanked 44 Times in 31 Posts Mentioned: 0 Post(s) Tagged: 0 Thread(s)	I was looking at some pictures of the Voltex Wing - Type 1S for the BRZ, and it looks like you can adjust the angle of attack by changing the front screws. Other model Vortex wings based on what I can see from Google results are also adjustable too, so it looks like if you want to keep your wing you can reduce the angle of attack (i.e. make the wing flatter rather than more angled). You will still have some drag, but at least you can minimize it as best you can.

08-29-2017, 05:38 PM	#14
StraightOuttaCanadaEh Wes Join Date: Feb 2017 Drives: Artisan Spirits '17 86 Location: Toronto Posts: 2,794 Thanks: 1,165 Thanked 1,674 Times in 994 Posts Mentioned: 21 Post(s) Tagged: 0 Thread(s)	Underpanels as well

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