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  #496  
Old August 16th 2010, 01:35
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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.
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  #497  
Old August 16th 2010, 05:47
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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.

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  #498  
Old August 16th 2010, 17:06
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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







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  #499  
Old August 17th 2010, 06:50
70Turbobug 70Turbobug is offline
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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
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  #500  
Old August 17th 2010, 09:06
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You have still crazy ideas about attainable speeds with a beetle there Mark!
Your way, way off... ;-)
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  #501  
Old August 18th 2010, 04:36
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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]
untitled by robjudge1313, on Flickr
[/img]
lola rear wing
[img]
IMAGE_00089 by robjudge1313, on Flickr
[/img]
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  #502  
Old August 18th 2010, 05:09
70Turbobug 70Turbobug is offline
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Quote:
Originally Posted by Wally View Post
You have still crazy ideas about attainable speeds with a beetle there Mark!
Your way, way off... ;-)

LOL ! I know..and your still too conservative - so the truth lies somewhere in the middle 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.
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  #503  
Old August 18th 2010, 09:47
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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

I promise, these will be the last:



A few brits spotted us on the parking and round-about just before the entrance and made this pic


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  #504  
Old August 19th 2010, 05:29
70Turbobug 70Turbobug is offline
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Nice pic in the "caroussel"
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  #505  
Old September 6th 2010, 11:11
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After the circuit driving comes the drag racing action at VWAction at Santa Pod raceway

3rd gear burn-out to warm the tires:

to do this


Result was an 11.62 @ 119.8 mph and I drove all the way home again (450km) with it packed with my camping gear.
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  #506  
Old September 6th 2010, 19:54
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haha, congrats! Was this the first time you took the front wheels off the ground?
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  #507  
Old September 6th 2010, 20:50
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Nice pic!!!
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  #508  
Old September 6th 2010, 21:45
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That's great news Wally! That will have some T1 people scratching thier heads about T4's. Love the "wheels up" launch!
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  #509  
Old September 7th 2010, 17:46
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Quote:
Originally Posted by Xellex View Post
haha, congrats! Was this the first time you took the front wheels off the ground?
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 and very happy no flywheels or drivetrain parts were blown
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  #510  
Old September 10th 2010, 05:39
70Turbobug 70Turbobug is offline
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Wow the pig can fly! 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.
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