View Single Post
Old 03-07-2020, 01:58 PM   #488 (permalink)
aerohead
Master EcoModder
 
aerohead's Avatar
 
Join Date: Jan 2008
Location: Sanger,Texas,U.S.A.
Posts: 15,909
Thanks: 23,994
Thanked 7,227 Times in 4,654 Posts
L/H comparison places Cybertruck in Cd 0.274 territory

I went through my archives ferreting out vehicles which fell withing 5% of Cybertruck's Length-to-Height (L/H) ratio of 3.3705.
For the 102 example that I found,I removed mirrors and cooling systems to mimic a BEV and adjusted drag coefficients accordingly.
Vehicle dates ranged from 1935,to 2016.
The vehicle field represented offerings from:
Audi ............................................... Millenia
BMW............................................... NASA
Buick .............................................. Nissan
Cadillac.......................................... .. Opel
Chevrolet......................................... Pontiac
Citroen........................................... . Porsche
Datsun............................................ Elliott G.Reid
Dodge............................................. Renault
Eagle............................................. . SAAB
Ford.............................................. . Saturn
GM................................................ . Schl'o'r
Holden............................................ Scion
Infiniti.......................................... ... Subaru
Jaguar............................................ . Tesla
Lexus............................................. . Toyota
Mazda............................................. Uni-Car
Mercedes-Benz................................. Volanis
Mercury........................................... Volkswagen
Merkur............................................ . Volvo

The 102-car average was L/H=3.365 (within 1%)
The 102-car average drag coefficient = Cd 0.2740
Tesla mirrors add on the order of Cd 0.10.
Mirrors, a little more 'dirty' than on my T-100 Toyota,@ Cd 0.26 would bring Cybertruck in at an even Cd 0.30.
If you 'build' the truck on a calculator,from the top down,or bottom up,circa Cd 0.27 keeps appearing.
__________________
Photobucket album: http://s1271.photobucket.com/albums/jj622/aerohead2/
  Reply With Quote
The Following 2 Users Say Thank You to aerohead For This Useful Post:
ME_Andy (03-07-2020), Xist (03-07-2020)