| [ Total Views: 2567 | Total Replies: 35 | Thread Id: 100688 ] |
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 55slug
Seriously Crusin Dubber
Posts: 169
Threads: 22
Registered: July 2nd, 2006
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| posted on February 2nd, 2013 at 11:14 AM |
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Im in Auckland mate. Prostock car I mentioned licensing passes next weekend... Prostock
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modulus
A.k.a.: Peter Hill
Veteran Volks Folk
Posts: 2009
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Registered: July 1st, 2003
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Location: Melbourne
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| posted on February 2nd, 2013 at 04:15 PM |
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Back to the topic...
You may not ever need a (rear) wing. As a drag car, you probably don't need extra down-force (and drag) at the top end as you're not likely to be
short of traction at higher speeds. However, a reduction of the lift caused by the beetle body design at high speeds is desirable, as the beetle's
wing-like profile, coupled with a rather steep drop angle of the rear body, will create unwanted lift. This may be best resolved by a spoiler (rather
than a wing) as Doug Sweetman and others have pointed out.
I can't find any *quantitative* information for the beetle, but *qualitatively*, I found these wind-tuft tests quite convincing in terms of
separation of the laminar airstream (at least at 100 kph):
http://www.gerrelt.nl/section-aerodynamics/aerodynamics-wool-tuft-test.html
It would be great to reduce lift without the additional weight, bulk, drag and access complexity of a spoiler and relatively easy to perform
back-to-back tests for efficacy.
hth
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Dak-A-Tak
A.k.a.: Peter Page
Custom Title Time!
Volksie Pete
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| posted on February 2nd, 2013 at 05:33 PM |
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Were else do you put your tools and spark plugs ( holes) , chips & drink when woking on car . Wings are cool .
It isn't all about down force , but the sides all so helps to keep your car stable and straight at top end .
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modulus
A.k.a.: Peter Hill
Veteran Volks Folk
Posts: 2009
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| posted on February 2nd, 2013 at 06:51 PM |
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Instead of a drink tray, for longitudinal stability you can do this:
| Error |
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LIFE IN THE LOW LANE
A.k.a.: Brennden Alder
Son of Jim - Creator of Good
All people have the right to stupidity but some abuse the privilege
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Mood: What Kombi wants vs what Kombi gets are nowhere near the same...
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| posted on February 3rd, 2013 at 04:14 PM |
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| Quote: | Originally
posted by Dak-A-Tak
Were else do you put your tools and spark plugs ( holes) , chips & drink when woking on car . Wings are cool .
It isn't all about down force , but the sides all so helps to keep your car stable and straight at top end .
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Don't forget the muffins and for westi somewhere to put his cancer sticks and lighter lol
[size=4] ACCEPT THAT SOME DAYS YOU ARE THE PIDGEON AND SOME DAYS YOU ARE THE STATUE[/size]
Alder Outlaws VW Racing - check it out on fb!!
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dangerous
A.k.a.: Dave Butler Muffin Man
23 Windows of Awesome
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| posted on February 6th, 2013 at 07:09 AM |
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| Quote: | Originally
posted by 55slug
Im in Auckland mate. Prostock car I mentioned licensing passes next weekend... Prostock
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Can you tell us more about this Adrian?
| Quote: | Originally
posted by westi
That's mad Alan.
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