GermanLook Forums

GermanLook Forums (https://www.germanlook.net/forums/index.php)
-   German Look Tuning (https://www.germanlook.net/forums/forumdisplay.php?f=19)
-   -   Aerodynamics of a bug (https://www.germanlook.net/forums/showthread.php?t=2820)

Mykul October 20th 2011 02:24

I AutoX with that Elise! Check out the front splitter, it's plywood!

Humble October 20th 2011 15:13

I believe that elise is a nationals car if I remember correctly. Also, plywood sounds so redneck, call it organic composite, it sounds racier that way ;)

judgie October 21st 2011 04:00

your'll be sirprised how many race cars run with plywood splitters and floors. even F1 run a ply floor as its a very good metrial for the use. its very impact resistant, its light wieght and it wont shatter. perfect qualitys for some thing thats going to get bounced over kerbs.
i have even seen plywood spliters with a layer of kevlar over them to give even better abrasion resistance.

evilC October 21st 2011 11:13

I know someone who stage rallies with a plywood/polycarbonate sump guard that is impressively strong ....and light.

Clive

Wally October 22nd 2011 14:19

A picture I have made many years ago of Bernd Rummenholl's 1303 Gelb-schwarzem Renner, which had the top of the front bumper towards body closed off.
This is something I will finally realize this winter, plus I will add a little twist to it myself ;)

http://i174.photobucket.com/albums/w...9.jpg~original

Steve C October 22nd 2011 17:14

2 Attachment(s)
Hi Wally

I had a similar air dam on my old 1302 in the 70s & 80s.

Steve

SilverBullet October 22nd 2011 23:36

2 Attachment(s)
This was what I did. Have to do cleaning if the roads were wet n muddy!

SilverBullet October 22nd 2011 23:37

How would the top cover help Wally?

Wally October 23rd 2011 10:09

Quote:

Originally Posted by SilverBullet (Post 82174)
How would the top cover help Wally?

Imo, when the air hits the nose, the part that goes over the front bumper splits in a part that goes over the bumper and bonnet and part goes downwards and under the car.
I think you want as much air over the car and not go under it.
My undertray may just help draw air from behind the bumper and downwards through the underside of the car.
Sealing the top should prevent this and as such give a little less uplift or more downforce, whatever effect prevails. At least thats my idea ;)

beetle1303 October 24th 2011 14:12

1 Attachment(s)
Wally, after u posted the Bernd Rummenholl's 1303 Gelb-schwarzem Renner's pic i remembered that i had found something similar a long time ago. cant remember if it was through a forum or randomly over the net...
If any one knows more then please comment.IIRC its from one of the scandinavian countries from the 80's
If u look closely the fender cover extends high between the front bonnet and the headlights.and the bonnet is different maybe a hoffman product?
Also note the front splitter with rubber lower end that extends to the front wing's leading edge...
Chris

Gerrelt October 24th 2011 15:34

Google image search resulted in this norwegian thread: vwnorge thread

The third picture shows the same front spoiler, but now from an angle.
I thought it looked pretty good from the front, but I don't like it from an angle.
Or is the yellow-brown color?

edit: the yellow-brown beetle has a different spoiler.
This is a better view on the gray one: LINK

aartjan October 24th 2011 16:22

Quote:

Originally Posted by Wally (Post 82175)
Imo, when the air hits the nose, the part that goes over the front bumper splits in a part that goes over the bumper and bonnet and part goes downwards and under the car.
I think you want as much air over the car and not go under it.
My undertray may just help draw air from behind the bumper and downwards through the underside of the car.

I think part of the effect of the bumper cover might be attributed to another phenomena. The high pressure of the stagnation at the front of the car (where the flow splits, velocity=0) is used to press on top of the cover and thus forcing the car down. That's just another way of saying that the bumper is a large splitter. However, the bumper itself does also have stagnation in front of it. Maybe slightly lowering the bumper might give some additional benefit of stagnation at the front bonnet when using a cover?

owdlvr October 24th 2011 17:46

Slightly off topic...but, whats the story on these headlight rings? Anyone know?

http://i174.photobucket.com/albums/w...tos/imm029.jpg

-Dave

al_kaholik October 24th 2011 18:22

owdlvr -they look like pretty standard headlight rims - 3 screw adjustment ones, 68-73, single screw from 74 on

owdlvr October 24th 2011 18:54

interesting...I've never seen anything but the single-screw units in Canada, regardless of year.


All times are GMT -4. The time now is 23:43.

Powered by vBulletin® Version 3.8.11
Copyright ©2000 - 2024, vBulletin Solutions Inc.
© www.GermanLook.net 2002-2017. All Rights Reserved