You might have to play with the wing a bit to get a good feeling out of it. Mine is little more than a picnic table at 70" wide and 12" cord but the difference was immediately noticeable. For a smaller spoiler you might need a more aggressive attack or to add a gurney flap to really make a difference.

Hi Wally

Maybe you could try the old wool tufts trick to see what the air flow is doing over the spoiler, you could probably see most of it in the rear view mirror or try using one of your cameras to film it.

Steve

Thanks for the pointers guys!
I think that a proper wing-shaped wing (?) instead of the plate-type it is now will make loads of more downforce, but for now the wing gets off again as I get the car prepared for some drag racing again at Santa Pod coming 5/6th september ;)

It was a really busy/crowded day as it was a saturday and the weather was extremely beautifull for a change. So lots of photografers there too :)

http://www.uedn.de/nos/T14082010/Images/DSC_0112.jpg

http://lh6.ggpht.com/_QWgHq4tCVDE/TG...c/P8148671.JPG

http://lh3.ggpht.com/_QWgHq4tCVDE/TG...k/P8148670.JPG

http://lh6.ggpht.com/_QWgHq4tCVDE/TG...E/P8148831.JPG

Looks like you´ve been quite busy Wally! Nice upgrades! The catch tank is a wise decision imho especially for a turbo car.Highspeed corners or 250+Km/h down "Pflanzgarten" will show if the spoiler works well or not :D

You have still crazy ideas about attainable speeds with a beetle there Mark!
Your way, way off... ;-)

when i first built my car i had no rear wing and the car felt very odd at speeds over 70mph. i fitted a rice rear wing and it made a very noticable differance to the stabilty in long corners. since fitting the lola rear wing [ which is huge] it has made a huge differance, you notice it above 50mph but it is running a big attack angle and the top plane is almost stalled !
first wing
[img]http://farm3.static.flickr.com/2075/...95b3b350_o.jpg
untitled by robjudge1313, on Flickr
[/img]
lola rear wing
[img]http://farm3.static.flickr.com/2263/...31d_z.jpg?zz=1
IMAGE_00089 by robjudge1313, on Flickr
[/img]

LOL ! I know..and your still too conservative - so the truth lies somewhere in the middle:lmao: I was just kidding about the 250+ of course..
However,you should notice a difference in corner speeds i.e. have more grip in the high speed corners than before the spoiler - if it works properly and produces more down force than drag.I have an interesting PDF file on building race cars and it covers spoilers,diffusors,etc. quite extensively if you´re interested.It´s in German,which isn´t much of a problem for you.

Thanks for the input Rob! Your wing is a little over the top for me, but it confirms my beliefs that it must make a difference if executed in the right way.

Mark, during TouristenFahren, the long straight is closed for the return lane and toll booth, so there really is no actual straigh on the Nordschleife during TF...even though there are a few really fast parts, they all have some degree of bend(s) in them. Still managed 200 km/h last saturday as my digit speedo records max speed.
I was very pleased with that as I never got that fast on a non-straight before and it could very well have to do with the extra safety/stability feeling the 'wing' gave.
The Ring has a lot of long bends, so that would coincide with Rob's experience as well :)

Hope we see each other at Action again in 2,5 weeks Rob! Undertray and wing will not be there then though as the car will be in full drag-race mode by then :D

I promise, these will be the last:

http://i174.photobucket.com/albums/w...48_3600001.jpg

A few brits spotted us on the parking and round-about just before the entrance and made this pic ;)
http://i174.photobucket.com/albums/w...1600x1200_.jpg

http://i174.photobucket.com/albums/w...1600x1200_.jpg

Nice pic in the "caroussel" ;)

After the circuit driving comes the drag racing action at VWAction at Santa Pod raceway

3rd gear burn-out to warm the tires:
http://i174.photobucket.com/albums/w...3/IMGP4257.jpg
to do this
http://i174.photobucket.com/albums/w...3/IMGP4155.jpg

Result was an 11.62 @ 119.8 mph and I drove all the way home again (450km) with it packed with my camping gear.

haha, congrats! Was this the first time you took the front wheels off the ground?

:eek::eek::eek: :notworthy: Nice pic!!!

That's great news Wally! That will have some T1 people scratching thier heads about T4's. Love the "wheels up" launch!

Yeah, scared the heck out of me as I try to keep the front as heavy as possible for good balance with circuit use: Battery, oil DS tank, waterinj.tank, catch tank, 2 fuel pumps, some steel braces, steel bumper etc etc...
Still, bloody proud of course of a fat track chick doing a wheelie :D and very happy no flywheels or drivetrain parts were blown :)

Wow the pig can fly!:D Congrats Wally! 11,62 for a circuit car is impressive enough,but a wheelie?! Very cool!! AS you correctly stated,the most important thing is that nothing broke.