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-   -   Aerodynamics of a bug (https://www.germanlook.net/forums/showthread.php?t=2820)

Steve C October 24th 2011 20:02

Hi

Regarding the headlight rims. In some countries they didn't get sealed beam headlights, the had a separate reflector and a plastic base to secure the reflector.

The bottom screw is to secure the headlight, the other screws are for adjustment.

Steve

Humble October 25th 2011 12:12

Quote:

Originally Posted by SilverBullet (Post 82173)
This was what I did. Have to do cleaning if the roads were wet n muddy!

Make sure you get some protection on the rear fenders because they'll get chewed up by rocks and sand :)

Jadewombat October 25th 2011 14:30

Quote:

Originally Posted by Humble (Post 82145)
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 ;)

Speaking of which:

http://www.specialprojectsms.com/info/technical.html

Interesting stuff. Anyone messed with a lower rear splitter on a bug near the trans, etc.? Too far back to notice, too turbelent, doesn't matter/wouldn't work with the bug body shape, good experience?? What are everyone's thoughts on the rear diffuser, like on this Acura:

http://www.specialprojectsms.com/images/technical.gif

Wally October 25th 2011 15:47

Better use an aircooled 911 for rear diffusor examples me thinks...
even then, exhaust routing and cooling in general might make that extremely difficult and/or outright dangerous for the engine's life expectancy.
Just stating the obvious probably ;-)

Wally October 25th 2011 16:07

Quote:

Originally Posted by Wally (Post 82170)
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 ;)

Well, I thought don't talk about it, lets just do it! :)
http://i174.photobucket.com/albums/w...8.jpg~original

http://i174.photobucket.com/albums/w...4.jpg~original

Humble October 26th 2011 12:19

That special projects page is what i'm following to make my front splitter. Having talked to a few ustcc teams and fabricators that splitter design is almost a standard.

I've considered a rear diffuser and using naca ducts to pull air from the engine bay but I'm not sure how well it would flow.

beetle1303 October 26th 2011 13:01

Niiiice:)

Wally, i would put the side piece even higher and blend it with the contour where the wing meets the extension.
You will also need to close the /extension - side piece - bumper - splitter/ area and also extend the widened wing downwards to the splitter

pretty much you will end up with something looking like the Jsports front bumper...

or you can get the side piece merged with the contour of the extension/wing line, trim the bumper edge towards the centre of the car and project the wing extension until it meets the splitter...

I hope it makes sense

otherwise give me a side view and front view pics of your beetle centered on the area for me to draw it for you...

Chris

Wally October 26th 2011 15:26

Thanks Chris!
I am thinking about/working on the missing side parts to cover the now still exposed 'lower front tire face'. Think I know what you mean therefore, will post up when I have come up with something. I know what I want it to look like, but actually making it with simple materials and attaching it to the existing parts is tricky to figure out.

beetle1303 October 26th 2011 20:39

if you want post a pic before u go and materialize...just in order to give you food for thought..
I will be going away for 4 days to my summer house...partly renovating, getting papers done in order to make a separate garage for my self:)))))))))

Wally, PM sent

Blizzard October 27th 2011 10:13

I wanted to do the same as you are making at the moment. But I did not like the look of all the loose pieces put together. The plate on top of bumper, bumper itself, the Kamei spoiler and the splitter plate. Thats why I bought a Remmele front bumper and I am adding polyester extensions to fill the gaps on the sides and on top between bumper and bonnet/front fenders. The end result will look completly different than yours. I bought the bumper in Hannover on the firtst of May but I am not finnished jet. (still talking about it instead of finishing the thing.;)

This,

http://i129.photobucket.com/albums/p...eelding057.jpg

has to look like this when it's finnished.

http://i129.photobucket.com/albums/p...7.jpg~original

Seeing youre work motivates me again to do something myself.

Wally October 27th 2011 14:14

Quote:

Originally Posted by Blizzard (Post 82232)
I wanted to do the same as you are making at the moment. But I did not like the look of all the loose pieces put together.

I agree, it would be much nicer if everything was 'one piece', but not everything fits as we want to (you know this just as well as I do I think unfortunately) or is available in the first place.
So we make something ourselves ;)

No I see the doctors car again, I see some resemblance, but the form really came as I was duplicating Rummenholls bumper plate and the extensions just seem the most logical thing to do as an opportunity to add some downforce.
Quote:

Seeing youre work motivates me again to do something myself.
If for nothing else, that good in itself :)

Steve C October 27th 2011 18:42

Hi

I just saw a photos of a VW fun cup car, they have an interesting front air dam and they may have had access to wind tunnels for the design or at the very least some designers with aerodynamic experience.

Steve

http://img824.imageshack.us/img824/3444/cimg2746q.jpg

judgie October 28th 2011 03:39

what you need to remember with the fun cup cars is that theres a rad in the front of the car, heance the big vents in the valance and bonnet.
not sure how well they would work as the as the splitter/side planes look like they would be a very turbulant area.
http://hooniverse.com/blog/wp-conten.../QuattroS1.jpg
the quattro above is the way i was thinking for my 03 race car but with a slightly more rounded wing to suit the shape of the bug. will have a splitter on rather than the lip that the rally cars had. been playing with drawings on a bug and its just working out how to do the back end to match in with the differnat front end.

al_kaholik October 28th 2011 06:52

Dump the beetle and just buy one of those! Amazing :D I jest but it has got to be tempting.

chug_A_bug October 30th 2011 21:43

Quote:

Originally Posted by al_kaholik (Post 82247)
Dump the beetle and just buy one of those! Amazing :D I jest but it has got to be tempting.

:goodjob:


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