About to run a new batch of Spoiler uprights...

[eric1h]

I am going to be ordering some metal to make a new batch of the spoiler upright extensions. I'll only be doing 4-5 sets this run so if you want them order fast! :-D

See my previous post some more pics.

Cost $200/set +shipping

shoot me a PM and I'll give you my paypal address if you want to use paypal.

Or you can go here

http://www.extremespeedonline.com/shop/

[eric1h]

anyone anyone? i had a handful of interested people, where did you all go? lol

[Squerly]

Originally Posted by eric1h

anyone anyone? i had a handful of interested people, where did you all go? lol

In my cased it's a matter of what will happen to the front of the car by adding downforce to the back but not compensating with a splitter to the front.

[eric1h]

Originally Posted by Squerly

In my cased it's a matter of what will happen to the front of the car by adding downforce to the back but not compensating with a splitter to the front.

One way to find out :-D

As long as you have the front airdam and the ride height is set correctly I don't think it will create so much downforce that it's going to totally upset the car.

BUT, we can get you a front splitter too, so it won't be a concern! :-D

[panozracing]

Originally Posted by eric1h

One way to find out :-D

As long as you have the front airdam and the ride height is set correctly I don't think it will create so much downforce that it's going to totally upset the car.

BUT, we can get you a front splitter too, so it won't be a concern! :-D

just a question....I already have the wing/splitter combo that we designed....

How did you come up with the wing location, how thick is the aluminum, is your wing adjustable (FYI...we noticed adjustments on our wing at mid-ohio and it helped with rear grip control), I assume it mounts to the stock locations, does it shake side to side (I am sure it has to so what did you do to minimize that). Can we compare our shop drawing to see the differance between our pylons?

The splitter: what does it look like?

I also see something on your roof...are those vortex fins? how did you determine how many, location, and angle of attack?

[eric1h]

The wing and splitter were mounted and designed based initially off of 2D CFD data, most of which I posted in this forum and I am sure you have read. There have been final design tweaks based on real track data and testing.

I then had a friend who is an engineer(designs parts) at honda run some 3D CFD #'s and checked rigidity, tensile strength and load characteristics to make sure they would handle the amount of force they would be under.

uprights are made of 1/4" 6061 Aluminum

Is there any side to side movement? sure a little, but VERY little. I've never seen a spoiler that high that didn't move side to side even a little, maybe on an F1 car, but I'm not going 200+mph as much as I'd like to think so.

the way they mount to a portion of the existing uprights it creates essentially a 1/2" thick piece that helps create a pretty solid base

is it adjustable? absolutely. Spoiler can be pivoted up/down, as well as the actual element pivoted on its axis to add more or less downforce/drag.

The splitter, again, I have posted a dozen or so pics about the splitter in another thread, its extends 3" from the airdam out the front of the car and uses a series of threaded rods and couplers as well as brackets and rivos to secure it to the airdam. it extends all the way to the oil pan(actually overlaps the oil pan about 2")

yes the fins are vortex generators/fins.... Placement was done based on wind tunnel testing. A group of friends rented a windtunnel for the day down in Charlotte, nc and tested several different Aero mods on a similar profile car... Vortex generators were one of the most effective mods made to the car. My placement was based off of that data/testing as well as some calculations done by my friends at honda.

Is my setup perfect? Probably not, It was however put together with some real data and real thought put into it. I never claimed to be a rocket scientist(bob and glenn can, but not me) but, I didn't just throw a bunch of scrap metal up in air and hope for the best. But I can say without a shadow of a doubt it made a real positive difference to the handling of the car, enough so that I was able to run 2:05-2:10 lap times at VIR in a car that puts out a whopping 270ish whp which for me is pretty good.


As for comparing setup's... I am all for sharing data to help the greater good, but if your goal(and sorry to say it appears to me it is) is to critique my design and tell me(and the rest of the panoz forum) all the ways you did it better and how my design is some how inferior then I just assume keep mine mine, and yours yours.

[panozracing]

Originally Posted by eric1h

The wing and splitter were mounted and designed based initially off of 2D CFD data, most of which I posted in this forum and I am sure you have read. There have been final design tweaks based on real track data and testing.

I then had a friend who is an engineer(designs parts) at honda run some 3D CFD #'s and checked rigidity, tensile strength and load characteristics to make sure they would handle the amount of force they would be under.

uprights are made of 1/4" 6061 Aluminum

Is there any side to side movement? sure a little, but VERY little. I've never seen a spoiler that high that didn't move side to side even a little, maybe on an F1 car, but I'm not going 200+mph as much as I'd like to think so.

the way they mount to a portion of the existing uprights it creates essentially a 1/2" thick piece that helps create a pretty solid base

is it adjustable? absolutely. Spoiler can be pivoted up/down, as well as the actual element pivoted on its axis to add more or less downforce/drag.

The splitter, again, I have posted a dozen or so pics about the splitter in another thread, its extends 3" from the airdam out the front of the car and uses a series of threaded rods and couplers as well as brackets and rivos to secure it to the airdam. it extends all the way to the oil pan(actually overlaps the oil pan about 2")

yes the fins are vortex generators/fins.... Placement was done based on wind tunnel testing. A group of friends rented a windtunnel for the day down in Charlotte, nc and tested several different Aero mods on a similar profile car... Vortex generators were one of the most effective mods made to the car. My placement was based off of that data/testing as well as some calculations done by my friends at honda.

Is my setup perfect? Probably not, It was however put together with some real data and real thought put into it. I never claimed to be a rocket scientist(bob and glenn can, but not me) but, I didn't just throw a bunch of scrap metal up in air and hope for the best. But I can say without a shadow of a doubt it made a real positive difference to the handling of the car, enough so that I was able to run 2:05-2:10 lap times at VIR in a car that puts out a whopping 270ish whp which for me is pretty good.


As for comparing setup's... I am all for sharing data to help the greater good, but if your goal(and sorry to say it appears to me it is) is to critique my design and tell me(and the rest of the panoz forum) all the ways you did it better and how my design is some how inferior then I just assume keep mine mine, and yours yours.

In noo way shape or form was I critiquing your stuff. I was just curious on what went into the designs. It sounds like you did what could be done without a major budget. I would have to say you did more than me. I went a much faster route. I had my race shop make a splitter and I had no input on it and they just SLAPPED it on the week before nasa nationals....which actually came out quite nice. The wing was a few back and forth with John (engineer) from panoz (he did some CFD in Unigraphics using the car and the alms pylon and we cut them and installed them.

These mods deff. help the car. I just wanted to see what was diff. about our designs and maybe combine to come up with the ultimate or do nothing more than share. If my last post left you feeling I was trying to find fault than I must apologize...that was not the intention...I will also add I have been drinking crown royal at my inlaws since about 1 pm soooooo....HAPPY HOLIDAYS.....

PS. if you pm your email I will email you the CAD file for my upright...I am just curious and would like to see the diff. Did you do the vortex gens alone to see if you felt a diff. or did they all go one at once?

[eric1h]

Fair enough, sorry for misreading your intentions!

I'll PM over my email and by all means would love to share data and solicit constructive feedback! I am by no means infallible and I certainly don't know it all.

The aero "package" all went on at the same time so I don't have a lot of data for the individual components on my car

[Wess-RA]

Eric, I really would like to buy your uprights and splitter, but at this time I have too many other places that need improvement. Putting high speed traction mods on a car which is still low on HP and is still running street tires would probably make my car slower overall. My understanding is that more downforce effectively creates a heavier car weight at high speeds. I will definitely be interested down the line-maybe in a year or so. Be sure to put some extras into your stock shelf.
The interaction between you and Brian is good. It shows how much effort both of you put into your designs. Very thoughtful!

[xtremevci]

hello i am intrested on the pylons and the front splitter . i left you my number if possible please call me. i have some questions thank you./

[eric1h]

Originally Posted by xtremevci

hello i am intrested on the pylons and the front splitter . i left you my number if possible please call me. i have some questions thank you./

got it, will do, been swamped with the holidays

[Squerly]

I'm wondering at what speed does the wing start producing beneficial down force? I'm assuming there would be benefit in turn one at Road Atlanta but would there be any benefit in turn 7?

[eric1h]

I would say you'd start to see a difference @ 55-60mph

With the current spoiler setup on our cars I doubt it makes much difference at ANY speed.

[Wess-RA]

I'm curious, did you guys ever make the performance comparisons with your aero mods? If so, would you mind sharing the results?

[eric1h]

Originally Posted by Wess-RA

I'm curious, did you guys ever make the performance comparisons with your aero mods? If so, would you mind sharing the results?

Yeah, the designs are similar, My design was slightly higher - 1-2" and slightly further forward @1"

My design has a bit more adjustability to it, which for the way these cars are all hit and miss, I thought would be beneficial, but for Brian's car the design seems to work well.

but overall very similar