RSRS,
Very nice looking set up.

We ran that 3.8 RS wing in IMSA on a 911 in the mid 90s. It was modified to be compliant with the rules as to max area and etc., so it was a little wider. I also don't remember as many louvers in it as yours has. It was amazing how little area of the main plane was really in the air. After running in the rain it was really obvious. The center, about the width of the rear window, would be clean, not even wet on the top or bottom. The outer 4- 5 inches would have streamlines on them from the oil and dirt that would curve in the shape of the roof and then straighten and run off the back. It wasn't until IMSA changed the rules and let us raise the rear wing up on two aluminum panels that the whole wing got in the air. We ran a Gurney tab or wickerbill too but it was just a piece of aluminum angle ranging from about 5/16 to 5/8ths of an inch tall in a track that we could slide it in and out of quickly on a pit stop.

 

Just what I thought about the 3.8.

The PO added the extension - his addition was clear, and more of an angle.
I copied it, had the same place fab it. Still have both it and the foil it attached to.

 

Another view of the 3.8:


Friend works on the Petersen White Lightining team

so I took a good look at the wing on the 996 RSR.

Yup, that's me:


RSR wing:





Wing of another breed:

----------------------------

Important to not that the 996:
front glass is much more raked
the glass to roof join is much smoother
the rear glass is much more horizontal

and the 996 wing is still up high........doubly increases the need for the wing to be higher on our 70s and 80s cars .

 

Here is my wing..it is a 72" fabcar.. I made custom mounts to get it in the air and give it max adjustibility ..though I never adjusted it much...
Both the first and third pic are from Road America..my wheel speed sensor showed 170 at the end of the straight with the front splitter and dive planes...without , as in picture three , 177 at the end of the straight. The car still worked well without the front splitter but was a little bit hairy to drive with just the big rear wing..

 

RSRS,
Tonight I'll dig into my "archives" and try and send a few photos of our 911. I "worked" part-time for Alex Job back through the nineties. I'll see if I can find the mid-engine 911 we prepped and provided track side support for Tom Hessert. It had a wing much like the 996 ones run today.

 

That'd be great - thanks

 

Another good source...got the info from VZ935 in another thread that he posted on in Pelican:
http://www.americaninternationalraci...259246&page=13

I like the A.I.R. LeMans Tail!

 

Did the mid engined 911 handle better, was it quicker ?

 

Nathan,
It handled much better than the "standard" 911. Hence it was quicker because the drivers weren't as spooked about the back end in the corners. It actually had a slightly higer Cd as I recall because of the air scoop on the roof like a GT-1s and the "indy car"-like wing, so it wasn't as fast in a straight line. The teething problems we had with it were mainly engine cooling issues. At its debut in the 24 Hours of Daytona we fried the motor with about three hours left in the race. We got great TV time though because that car looked like a mosquito fogger everytime you lifted. The last hour and a half or so we were literally running on the apron to stay out of everyone's way but still get the miles we needed for another place. We used to run Valvoline in the motors. It was good oil, but it was coke, sludge and carbon by the end of that race. We'd come into the pits, dump about four to six quarts of oil into it and check the gas ;-). It took us about three more races to figure it all out, including switching to Mobil 1 synthetic, and running at almost turbo AFRs to keep it alive. When we really got it sorted that summer we won Watkins Glen. I've got to find that picture of it flaring on the overrun at night in Daytona. It looked like we were shooting a flame-thrower! Like Phil Hartmann used to say "Good times."

 

Would love to see that !

I had heard that the cooling is a problem, didn't think about the extra cd issue trying to keep the temp down.

I guess it would be ok to do now a water cooled boxster, cayman or 996/7 engine could be used ?

I think the Cayman could be a great car but it has two problems for me, one the name (replace the C with a G) and the other I love the rear side window of the 911 and the Cayman doesn't have this although the rest of the car looks fine.
Unfortunately the Porsche name has been reduced to people thinking it is a gay mans or a girls car as so many hair dressers drive Boxsters etc. No offence meant from me to anyone. I'm sure they are great cars. I think these A-holes are just jealous.

 

I love the internet ;-)

 

Okay, here's the mid-engine car I scanned an old photo so it isn't the best quality but it gives you an idea of what we were trying to do in the mid 90'3. Dave Klym made the chassis (a tube frame), the body was fiberglass in the fenders, doors, and front and rear facias. The hood, roof, and engine cover were stock Porsche pieces. We ran a 930 suspension, with coilovers all around. I think it was 3.6 liters but that might not have been right, but I know it had a Pi electronics set-up. We used stock Porsche headlights and taillights and a stock safety glass windscreen with the rest of the glazing being lexan. We had Porsche brakes, a ZF 5-speed racing gear box, and the wheels were BBS 3-piece, shod in Goodyear Eagle racing slicks. Our driver team the first year was Tom Hessert, Charles Slater and Hurley Haywood. The second and last year we ran it in the series it was Hessert, Slater, and the third driver was a revolving door. As I remember, we had Joe Cogbill, Bill Auberlin and I think Kerry Collins drove a race with us as paid seats. All in all, it was a neat package for its time. Well hope you can actually see something in the photo. It was fun remembering "the days of my youth."

 

Nice. Do you by chance happen to know of another pic you could post?

 

I've got IMSA pics running back to the early eighties. I'll look and see if I can't find my stash of good stuff. It'll just take me sitting down to scan some of them into the computer after I gather them all up.

 

Wow.
Thanks for going to the trouble of scanning and uploading, it is much appreciated, thanks.