Interesting Aerodynamic Cars (Mike Vetter's ETV, also Avion)

[freebeard]

Originally Posted by Frankly

No need; simple pivot:

You'll notice the cut-line on the pontoon fender is angled forward. For clearance as it opens. The easy solution wold be to suicide the door, with the handle at the back.

Now this one could work:


But this one is my favorite since it reminds me of the Italdesign Columbus:



____________

Originally Posted by aerohead

I believe that it was the aerodynamic development for the 1958 Mercedes-Benz Grand Prix race car,which revealed the superior drag advantage of the all-enclosed body,in spite of the larger frontal area.

Auto Union Type C 'Stromlinienwagen' Speed Record Attempt 1938 Bernd Rosemeyer
Check out those skegs.
____________

Imagine your alone at night and drowsy on a dark country backroad and that comes at you out of the gloom.

[Frank Lee]

This one exists:

[NeilBlanchard]

Just when you thought the treasure trove of aerodynamically interesting vehicles had been nearly exhausted - a bunch of new finds get posted!

[kach22i]

Originally Posted by NeilBlanchard

Just when you thought the treasure trove of aerodynamically interesting vehicles had been nearly exhausted - a bunch of new finds get posted!

I'm just bummed out that so many were just Photoshop artwork.

I will try to vet this stuff better in the future.

EDIT:
More and better images of the mystery car, but getting differing descriptions of it.

http://nextluxury.com/cars-rides/top-strange-cars/

Rollendes Haus mit knapp 200 Km/h

Another claims:

1930's Sigvard Berggren "Ford" V8 streamliner. | auto-mobilia ...

https://www.pinterest.com/pin/266345765436078174/


EDIT-2:
https://www.pinterest.com/pin/844495367598609080/

Sigvard Berggren's 'Future' Car, Sweden 1951-Tap The link Now For More Information on

https://www.pinterest.com/pin/856035841649559040/

https://i.pinimg.com/originals/36/7a...5422b83c46.jpg

https://www.pinterest.com/pin/296252481723687592/

https://i.pinimg.com/474x/99/fc/e0/9...cacbf242c7.jpg

https://steemit.com/history/@emlyp/e...-long-time-ago

The Sigvard Berggren "Ford" V8 streamliner in Sweden in 1959.

More info and images here:
https://www.autocult-models.de/models/autocult-09009/

The basis for his creation was a 1938 Dodge chassis originally used on a taxi. ......................

Air intakes fitted to each side, which provided cooling air to the 100 horsepower flathead Ford V-8 engine,,,,,,,,,,,

This site might be a bit of "a find:.

Streamliners
https://www.autocult-models.de/categories/streamliner/

What we know as "fluid mechanics" had its beginnings in the early 20th century in the Lower Saxony village of Gottingen. The mathematician Felix Klein began studying air flow as a fluid and how it acted upon shaped bodies. The true pioneers however, were working in the aviation field seeking new ways to reduce drag and increase speed in aircraft designs. By the 1930's, Schlor, Paul Jaray, and Wunibald Kamm became leading advocates of streamlined body shapes in automotive use. ............

https://www.autocult-models.de/about-us/

The AutoCult GmbH was founded in the beginning of 2015, by a team, who can look back on years of successful experience in model car business.



True to our brand and company name we are dedicated to realize long since forgotten automobiles, which stand out due to its extraordinary shape or its groundbreaking construction, as miniatures. The focus is not only on the model itself, we also want to highlight and tell our collectors the story and information behind each car. In this way AutoCult resurrect long since forgotten brands in miniature form.



Each of our models is sophisticatedly handcrafted of resin, is subject to strict quality controls and a limitation of 333 pieces. The limitation is evidenced by an enclosed booklet, which also contains the story of the car. At the end of each year AutoCult issues a book of the year, containing all detailed and illustrated stories of the released model cars of the year.



The AutoCult model range is subdivided in 12 different categories to offer the collector the continuous opportunity to keep his/ her collector’s field affordably complete. Below the categories, like Streamliner, Microcars or Racing, partly quirky but also pioneering models; sometimes defunct; are released and will be released. Through substantial knowledge in classic model making it is possible to realize these models without CAD-assistance.



Due to a sensitive selection of suitable distributers and dealers and through our worldwide limitation of “only” 333 pieces, we can offer and ensure a certain price stability and recoverability. Our Models are only distributed by specialist dealers and museum shops.



We look forward to take you with us on our "journey through time" of automobile history.



Your AutoCult-Team.

Oh man, what a find.


https://www.autocult-models.de/models/autocult-04000/

Even during the years of World War II, the Schlörwagen stayed an experimental car and was disassembled later. Karl Schlör unsuccessfully tried again to get the permission to rebuild his car, which was denied by the British Military Administration. Then, to Mr. Schlör’s disappointment, the chassis and the empty body were destroyed.

Interesting text.

Nevertheless, the Schlörwagen did not make it from prototype to series production because of two reasons: The shape and – again – the shape! With its low drag, the Schlörwagen reacted very heavy to side winds. This made it difficult or even dangerous to control the vehicle.

https://www.autocult-models.de/about-us/

Due to a sensitive selection of suitable distributers and dealers and through our worldwide limitation of “only” 333 pieces, we can offer and ensure a certain price stability and recoverability. Our Models are only distributed by specialist dealers and museum shops.

[freebeard]

You know, I hadn't appreciated that example before — I though a fiberglass hood could have the curvature reversed.

Looking at it again, with that visor; stripping the side trim would improve it a lot. The trim just captures pine needles anyway.

Just when you thought the treasure trove of aerodynamically interesting vehicles had been nearly exhausted - a bunch of new finds get posted!

It's a bottomless well.

http://justacarguy.blogspot.com/2019...k-home-of.html


http://justacarguy.blogspot.com/2019...liner-van.html

[Frank Lee]

1939 FIAT 508






SCHWEEEET TOPLESS


Sorry no data- pinterest pics.

[freebeard]

Poser. The shadow between the front wheel tells you the radiator isn't properly ducted.

I do like the four-piece back window. The only other one I can think of is this old Studebaker.



edit:
I looked the model Berggren Future Car at autcult-models.de. Curiously it's listed under Camping vehicles, along with the VW Beetle Minihome:

[kach22i]

Originally Posted by freebeard

edit:
I looked the model Berggren Future Car at autcult-models.de. Curiously it's listed under Camping vehicles, along with the VW Beetle Minihome:

That is curious, and no explaination in the text description.

It is a good thing that I no longer collect scale mode cars - would need a bigger house.

https://www.autocult-models.de/

[NeilBlanchard]

Ahead of its time, an experimental car was presented at the IAA Show in Berlin in the year 1939 – the Schlörwagen. Karl Schlör von Westhofen-Dirnstein (1911-1997), a German engineer developed this car at the research institute for aerodynamics (AVA) in Göttingen. His aim was to minimize the use of fuel by following the construction of aircraft wings for the car body. And he succeeded.

His prototype – with its nickname “Göttinger Ei” – built on the chassis of the Mercedes-Benz 170 H, had 20 % to 40 % less fuel consumption as its series model. The engineer even proclaimed a higher top-speed of around 30 % to 40 %. All of this was achieved by a streamlined body design which almost completely covered the wheels and – in contrast to later fuel efficient cars, aerodynamic experimental cars and record cars – which offered space for a complete family like today´s vans. The windows were fully integrated into an even surface of aluminium body, and a completely sealed underbody was also a big impact. The final result was a drag coefficient of 0.186 during contemporary measurements, but a later test with a replica model by Volkswagen technicians in the seventies resulted at a drag coefficient of 0.150. Some modern prototypes were better in the meantime, but they never offered the same passenger capacity. The drag coefficients are between 0.240 and 0.300 of today´s production cars with the same capacity.

Nevertheless, the Schlörwagen did not make it from prototype to series production because of two reasons: The shape and – again – the shape! With its low drag, the Schlörwagen reacted very heavy to side winds. This made it difficult or even dangerous to control the vehicle. Furthermore, people were not yet ready for a design like this. Even though, the internal values of the car were decisive, the body shape was considered as very strange and ugly for the times.

Even during the years of World War II, the Schlörwagen stayed an experimental car and was disassembled later. Karl Schlör unsuccessfully tried again to get the permission to rebuild his car, which was denied by the British Military Administration. Then, to Mr. Schlör’s disappointment, the chassis and the empty body were destroyed.

There are details that I had not heard before. I think that side wind instability was also partly due to the weight of the rear engine, and to the early Porsche designed rear suspension and axle. An electric drivetrain would be much better in the Schlörwagen.

And a centerline fin on the back would probably offset the aero problem. The wind tunnel tuft test photo shows that the plan taper in the back was too steep, and there was lift / drag added as a result.

As good as the Schlörwagen was - it could be made even better.

[Bicycle Bob]

The Tatras were responsible for the demise of several top Nazis, due to less severe high-speed instability. These incidents, and the general tail-happiness of rear engine designs, plus the newer blowover accidents have convinced me that a streamlined car should be designed to be stable in a glide. If it is driving in a strong crosswind, and hits a patch of wet ice, it should move over, but not yaw.