Go Back   EcoModder Forum > EcoModding > General Efficiency Discussion
Register Now
 Register Now
 

Reply  Post New Thread
 
Submit Tools LinkBack Thread Tools
Old 11-24-2021, 02:44 PM   #31 (permalink)
Master EcoModder
 
aerohead's Avatar
 
Join Date: Jan 2008
Location: Sanger,Texas,U.S.A.
Posts: 16,268
Thanks: 24,393
Thanked 7,360 Times in 4,760 Posts
' K-car'

Some will relate the term to the 5-car series developed at FKFS between 1930 and 1941, next door to Daimler Benz.
The 'K' stands for both Professor, Wunnibald I. 'Kamm', who created the FKFS, and Baron Rinehard 'Koenig'-Fachsenfeld, who traded his aerodynamic patents to the German government, in exchange for free use of the FKFS and it's wind tunnel.
The aerodynamic term 'Kamm-back' is a reference to the K-form, of which was the intellectual property of Fachsenfeld.
Germany had lost WW-I, in part, due to running out of oil and rubber.
Adolf Hitler was very interested in stretching Germany's fuel supplies, until he could capture North Africa, the Middle East, Ploesti Romania, and the Soviet's Caspian Sea petroleum. The lower-drag, aerodynamic capabilities of the K-form factored into that calculus as a bridge technology.
It didn't work out very well, and they ended up losing WW-II in part, because of lack of oil and rubber.
You may have seen photographs of GM's Opel Russelsheim factory storage area, full of brand new Blitz Trucks, with wooden wheels, awaiting rubber from I.G. Farben, who's synthetic fuel and rubber factories were ultimately bombed into oblivion by Allied air forces.

__________________
Photobucket album: http://s1271.photobucket.com/albums/jj622/aerohead2/

Last edited by aerohead; 11-24-2021 at 02:47 PM.. Reason: add data
  Reply With Quote
Alt Today
Popular topics

Other popular topics in this forum...

   
Old 11-24-2021, 06:29 PM   #32 (permalink)
Master EcoModder
 
freebeard's Avatar
 
Join Date: Aug 2012
Location: northwest of normal
Posts: 28,552
Thanks: 8,091
Thanked 8,880 Times in 7,328 Posts
Contemporaneous with Kamm and Fachenfeld was Breers.



FWD five-cylinder radial FWD.



https://freebeard.imgur.com/all/

That coulda been the real Pentastar in the 1930s..
__________________
.
.
Without freedom of speech we wouldn't know who all the idiots are. -- anonymous poster

____________________
.
.
Three conspiracy theorists walk into a bar --You can't say that is a coincidence.
  Reply With Quote
The Following User Says Thank You to freebeard For This Useful Post:
aerohead (11-30-2021)
Old 11-24-2021, 08:40 PM   #33 (permalink)
It's all about Diesel
 
cRiPpLe_rOoStEr's Avatar
 
Join Date: Oct 2012
Location: Porto Alegre, Rio Grande do Sul, Brazil
Posts: 12,882
Thanks: 0
Thanked 1,684 Times in 1,502 Posts
Quote:
Originally Posted by freebeard View Post
FWD five-cylinder radial FWD
I don't know why it makes me lurk about attempting to fit a 7-cyl Rotec into a VW Gol or Saveiro...

But anyway, most likely a FWD radial into some Beetle-ish model wouldn't be so critical to overheating, as all the cylinders would be exposed in a more even way to the air flow.
  Reply With Quote
Old 11-30-2021, 12:42 PM   #34 (permalink)
Master EcoModder
 
aerohead's Avatar
 
Join Date: Jan 2008
Location: Sanger,Texas,U.S.A.
Posts: 16,268
Thanks: 24,393
Thanked 7,360 Times in 4,760 Posts
Carl Breer

https://ecomodder.com/forum/showthre...1-a-13538.htmlRight on!
His 1934, DeSoto Airflow aerodynamic test mule sported a pure Kamm-back, in truncated form. With the suite of aero mods they used, this K- form Airflow came in at Cd 0.268, compared to Cd 0.51.
Adding the stinger dropped it down to Cd 0.244 ( SPIRIT with the mirrors deleted ).
Bottom of #1 permalink, bottom of chart on left.
__________________
Photobucket album: http://s1271.photobucket.com/albums/jj622/aerohead2/

Last edited by aerohead; 11-30-2021 at 06:11 PM..
  Reply With Quote
Old 11-30-2021, 01:43 PM   #35 (permalink)
Master EcoModder
 
freebeard's Avatar
 
Join Date: Aug 2012
Location: northwest of normal
Posts: 28,552
Thanks: 8,091
Thanked 8,880 Times in 7,328 Posts
For the lurkers:


https://i.imgur.com/X3Q8Vf1.jpg

__________________
.
.
Without freedom of speech we wouldn't know who all the idiots are. -- anonymous poster

____________________
.
.
Three conspiracy theorists walk into a bar --You can't say that is a coincidence.
  Reply With Quote
The Following User Says Thank You to freebeard For This Useful Post:
aerohead (11-30-2021)
Reply  Post New Thread




Similar Threads
Thread Thread Starter Forum Replies Last Post
Cheapest new car ever, 2cyl, 33hp, 50 mpg! (Tata Nano) jwxr7 General Efficiency Discussion 70 05-15-2011 12:36 PM
Metro/Swift/Firefly Crash Test Videos! Peakster The Lounge 24 11-15-2009 11:36 AM
98 Ford Taurus 4dr Sedan- where do I start? rykoala Introductions 11 01-20-2008 12:12 AM
News: GM's Lutz says car prices to go up $6k to meet CAFE targets MetroMPG General Efficiency Discussion 7 01-19-2008 07:51 PM
OEM Air Injection, Yay or nay? Dane-ger EcoModding Central 11 01-14-2008 11:05 AM



Powered by vBulletin® Version 3.8.11
Copyright ©2000 - 2024, vBulletin Solutions Inc.
Content Relevant URLs by vBSEO 3.5.2
All content copyright EcoModder.com