Best Rear Spoiler/Wing

[Mr.ac]

Originally Posted by sam69

Thanks for the positive input, the first reply and post 7 are one of the reasons I don't post much on this forum.

If they are 100% cosmetic I guess this discussion is futile but on the off chance they're not as lots of race cars use them I have the choice between a wing that I can make new mounts for or buy a duckbill style .

Would I be correct assuming that a wing would use more fuel over the duckbill as I do a lot of country driving or is that wrong

Your welcome.

Unless your doing 120mph and need to shave off 2 seconds off lap times then yes a race wing will help.

If any wing you get is trunk mounted it's just for looks. Will it help you going freeway speeds? nope. It's all for looks.

If you still feel like I'm brutal, then your a ricer.

But it doesn't mean I don't like wings, it's just comical when people think their wing mounted on the truck will provide downforce at 70mph.

[Ashikabi]

The above isn't exactly true. While trunk mounted wings aren't quite as effective they will still provide downforce. Voltex doesn't operate a wind tunnel so their wings can look better, they do it to make a better performing wing. However you do need substantial speeds to see substantial benefit. A spoiler will slightly increase gas mileage while a wing will make drag decreasing gas mileage. Again, only slightly

[Kiske]

Originally Posted by sam69

Thanks for the positive input, the first reply and post 7 are one of the reasons I don't post much on this forum.

If they are 100% cosmetic I guess this discussion is futile but on the off chance they're not as lots of race cars use them I have the choice between a wing that I can make new mounts for or buy a duckbill style .

Would I be correct assuming that a wing would use more fuel over the duckbill as I do a lot of country driving or is that wrong

Most of the duckbill spoilers on this platform are purely cosmetic. They may have function though likeness but, don't expect much. Also (as stated previously) avoid the roof spoilers there was a video and simulated cfd data on them for this car posted and while back.


Your not going to notice the difference in fuel consumption before and after. You may enjoy keeping the car at higher speeds with the inproved stability/feel with a spoiler though effecting milage. Personally I think most of us have found the front wheels are a bigger problem at higherspeeds stock than the rear. 110+mph and the front gets floaty.

Also there isn't a 'best' answer. When the time attack guys are setting up their aero dynamics, they are dialing it in as a complete car taking in consideration to their other aerodynamic modifications, ride height and weight. It's many small factors that result in a big change.

[sam69]

After doing more research think I'm going to go with a diffuser like the Driveway Labs design as I think that will do the job and save a bit of gas as well.
http://www.ft86club.com/forums/showthread.php?t=48283

Just need to get some ally sheet and fabricate it up !

[Drakiv]

Voltex Type 7 GT Wing (Swan Neck), downforce is produced on the underside of the wing






Also some notes from a search:
Both wings and spoilers reduce up-lift at the tail of the vehicle, but use different mechanisms. Wings are airfoils designed to directly deflect air upwards and thus push the rear of the vehicle down. They generally add quite a bit of drag. Spoilers are barricades to undesirable flows, and thus are able to reshape airflow streams around the vehicle. This can help keep the rear of the vehicle down and decrease drag by changing the effective vehicle shape. You need computational fluid dynamics and/or wind tunnel testing to quantify spoiler/wing performance. Neither have any positive impact whatsoever on straight-line low-speed acceleration. Both are primarily intended to improve stability and cornering at high speeds.

[stevesnj]

I learned a lot from this guy...

[ame="https://www.youtube.com/watch?v=quDLzxmJl5I"]https://www.youtube.com/watch?v=quDLzxmJl5I[/ame]


[ame="https://www.youtube.com/watch?v=Fq8hkPobpes"]https://www.youtube.com/watch?v=Fq8hkPobpes[/ame]

[RichardsFRS]

Ehhh I like the no wing sexy retro look

[Gunman]

Look at the L/D numbers, and determine "best" then.

Wings can work at low speed too, you just need to use the right one. Look at the current FSAE cars, most of their time is spent below 60mph, but they make huge gains using wings.

[ort895]

It only took an hour for an asshole to show up this time. I fear for these forums.
Anyway, I would look into a diffuser and then just pick a wing that's cosmetically appearing to you. I'm a big fan of the SARD LSR.

[BAMF86]

Most fast people at the circuit are either running Voltex type 2 or type 7 for our cars, APR GTC-250 is a little more budget friendly. Keep in mind you will probably need a front splitter since the aero imbalance will be completely off.

You could alternatively run a splitter/rear diffuser combo since our rears are already pretty stable at high speeds compared to s2000.

Yeah this forum is becoming a joke if you're trying to find serious replies, you may find better luck asking in the track sub section next time

[jmimac351]

Originally Posted by Mr.ac

Your welcome.

Unless your doing 120mph and need to shave off 2 seconds off lap times then yes a race wing will help.

If any wing you get is trunk mounted it's just for looks. Will it help you going freeway speeds? nope. It's all for looks.

If you still feel like I'm brutal, then your a ricer.

But it doesn't mean I don't like wings, it's just comical when people think their wing mounted on the truck will provide downforce at 70mph.

How does a wing know it's mounted to a truck? Does a wing mounted to a truck deflect a commensurate amount compared to the wing angle to offset any potential performance advantage if it were mounted to the frame of the car? Have you run a wing on a truck or do you have any data (like lap times before / after) to share? How much does it deflect? I've run a car with a wing mounted to the frame of the vehicle, a Panoz. That's because it had to be... the body was plastic.

There are some large, lexan based rear spoilers in use on Miatas that seem to help. 949Racing has done similar things on Miatas via large, rear spoilers. Emilio at 949 doesn't care about cosmitic stuff. I'm curious to know what data you have to reference that shows a pronounced rear spoiler doesn't do "something"... whether it needs to be offset with front aero is another matter.

[Apex-Apex]

[jmimac351]

Sam69,

This is something I've been kicking around as well... based on what I can figure... the Voltex stuff works. So, one option is to pay The Man.

Here is something else that I may try. It may or may not work. It's cheap though, and wouldn't require much financial commitment. It essentially tries to copy what Blackbird Fabworx is doing on Miatas. I've owned one of the Blackbird Fabworx lexan spoilers for a Miata. Never installed it, sold the car, gave it to a buddy. It's on his supercharged Miata now, and it's "doing something"... we aren't quite sure what yet. That car is a bit of a handful.

Here is the Blackbird piece:





Anyway, I plan to get something like this:



I have some lexan in the garage that I can add to it, to increase the height of the spoiler into the air, but not hurt rearward visibility. I'll need to attach it with fasteners, heat with a heat gun it to mold it to the contour of the spoiler, trim it, etc. I made need to support it with struts and I may have to drill into the trunk. Fortunately, I have access to a spare trunk in case I need to do that. The only time this car sees the street is if I decide to drive it to the track rather than tow it. Not sure I'd try something like this for a street car (unless I had a spare trunk to swap for an event).

I have no idea how well it will work or whether I'll do it, but it's cheap enough to try.

[DSOmegaX]

As far as two that were developed and tested for the car, they would be TRD's 14R wing and STI's tS wing. I know the tS was developed out on the Nurburgring