May have been covered prior but here goes.
I am trying to find out the Drag Coefficient or Cd of the following
a- MY1973, 911 T ( no front spoiler)
b-MY 1973, 911 S ( with front spoiler)
c-My 1973, 911 RS (front spoiler and duck tail)
Cheers.
May have been covered prior but here goes.
I am trying to find out the Drag Coefficient or Cd of the following
a- MY1973, 911 T ( no front spoiler)
b-MY 1973, 911 S ( with front spoiler)
c-My 1973, 911 RS (front spoiler and duck tail)
Cheers.
Mark
Mark,
no guarantee, but
here is a list of the aerodynamic values of the various Porsche models:
Drag coefficient (Cw) x frontal area (A) m2 = drag index
901 1964: 0,363 x 1,685 = 0,612
911 MJ 1965 bis 1967 all types (also Targa and S): 0,363 x 1,685 = 0,612
911 MJ '68 (all Types): Cw x A (m2) = 0,381 x 1,6853 = 0,642
912: correspond to the 911s of the respective model years
911 MJ '69-'73 : Cw x A (m2) = 0,408 x 1,71 = 0,697
911 RS MJ 1973: 0,397 x 1,73 = 0,686
911 MJ 1974 up to MJ 1977 (also S, Targa): 0,39 x 1,76 = 0,686
911 SC MJ 1978 up to MJ 1983 (also Targa and Cabrio) and Carrera MJ 1974 up to MJ 1977: 0,40 x 1,77 = 0,708
911 Carrera 3,2 MJ 1984 up to MJ 1989: 0,39 x 1,77 = 0,690
911 Carrera 3,2 MJ 1984 up to MJ 1989 with Front- and Rear diffusor/spoiler (also Clubsport):0,38 x 1,77 = 0,672
911 Turbo (930), (also WTL, SC/RS, Turbo Flachbau): 0,39 x 1,86 = 0,725
Last edited by haul; 04-20-2021 at 11:27 PM.
59 750 pre unit triton
63 650 gray silver bikinitub triumph thunderbird
70 650 astralred silver triumph bonneville
65 912 slate gray "erwin"
73 914 ravennagreen "ferdl", swapped 1:1 for a
10 997 racing green awd „gustl“
erwin_loves_polo
as i think for comparison
aerodynamic values of the various Porsche models:
Drag coefficient (Cw) x frontal area (A) m2 = drag index
356/1 Gmünd 1948 (offen, mit 2 Personen): 0,45 x 1,41 = 0,648
356/2 Gmünd Coupé und Cabrio 1948 bis 1950: 0,29 x 1,62 = 0,469
356 bis MJ 1952: 0,296 x 1,677 = 0.496
356 bis MJ 1955: 0,365 x 1,692 = 0,618
356 Speedster bis MJ 1958, Convertible D 1959: 0,377 x 1,640 = 0,618
356 A: 0,365 x 1,692 = 0,618
356 B: 0,398 x 1,611 = 0,641
356 B Roadster: 0,386 x 1,599 = 0,617
356 B 1600 GS Carrera GTL (Abarth): 0,389 x 1,495 = 0,581
356 C: 0,398 x 1,611 = 0,641
550 RS Spyder:
- 1-Mann-Windschutzscheibe, Beifahrersitz abgedeckt: Cw = 0,290, Cw x F = 131,5
- Breite Windschutzscheibe mit Seitenfenster (für 2 Insassen): Cw = 0,370, Cw x F = 187
- Breite Windschutzscheibe mit Seitenfenster (für 2 Insassen), sehr hohes Heck hinter den Insassen, stark abfallend: Cw = 0,310, Cw x F = 157
904 Carrera GTS: 0,383 x 1,401 = 0,536
914 1,7 (auch 914/6, 914/8, 914/8 SII) MJ 1970 bis MJ 1973: 0,38 x 1,60 = 0,608
914 2,0 MJ 1973 und 1974: 0,38 x 1,60 = 0,608
914 2.0 MJ 1975 und 1976: 0,377 x 1,60 = 0,603
924 (MJ 1976 bis 1979): 0,36 x 1,76 = 0,634
924 (ab MJ 1980): 0,33 x 1,79 = 0,591
924 Turbo (931): 0,34 x 1,79 = 0,609
924 Carrera GT (937): 0,34 x 1,82 = 0,619
924S (946): 0,33 x 1,81 = 0,597
944 (auch S) MJ 1982 bis 1989: 0,35 x 1,82 = 0,637
944 Turbo (951), (auch S2, Turbo S, 968 Turbo S(?)0,33 x 1,89 = 0,624
944 S2 Cabrio MJ 1989 bis 1991 (auch Turbo Cabrio, 968 Cabrio(?)0,36 x 1,87 = 0,673
968 Coupé: 0,34 x 1,88 = 0,64
928 MJ 1978 bis 1982: 0,41 x 1,95 = 0,799
928 S MJ 1980 bis 1986: 0,38 x 1,95 = 0,741
928 S4 MJ 1987 bis 1991 (auch CS, GT): 0,34 x 1,98 = 0,673
928 GTS MJ 1992 bis 1995: 0,35 x 2,02 = 0,707
986 Boxster: 0,31 x 1,93 = 0,598
986 Boxster S MJ 2000 bis 2002: 0,32 x 1,93 = 0,617
987 Boxster: 0,29 x 1,96 = 0,568 (Tiptronic S: 0,30 x 1,96 = 0,588)
987 Boxster S: 0,30 x 1,97 = 0,591 (Tiptronic S: 0,31 x 1,97 = 0,611)
987 Boxster Facelift ab MJ 2009: 0,29 x 1,97 = 0,571 (PDK: 0,30 x 1,97 = 0,591)
987 Boxster S Facelift ab MJ 2009: 0,30 x 1,98 = 0,594 (PDK: 0,31 x 1,98 = 0,614)
987C (C7) Cayman (S): 0,29 x 1,98 = 0,574
987C (C7) Cayman S) 0,29 x 1,98 = 0,574 (Tiptronic S: 0,30 x 1,98 = 0,594)
987C (C7) Cayman Facelift ab MJ 2009: 0,29 x 1,99 = 0,577
987C (C7) Cayman S Facelift ab MJ 2009: 0,29 x 1,99 = 0,577 (PDK: 0,30 x 1,99 = 0,597)
9PA Cayenne (V6) MJ 2004: 0,38 x 2,78 = 1,056
9PA Cayenne S (und Turbo) MJ 2003 + 2004: 0,39 x 2,78 = 1,084
9PA Cayenne Facelift (auch Turbo): 0,35 x 2,78 = 0,973
9PA Cayenne S Facelift: 0,35 x 2,79 = 0,9765
9PA Cayenne GTS: 0,36 x 2,83 = 1.0188
9PA Cayenne Transsyberia: 0,35 x 2,79 = 0,977
9PA Cayenne Diesel: 0,36 x 2,78 = 1,00
970 Panamera S, 4S: 0,29 x 2,33 = 0,676
970 Panamera Turbo: 0,30 x 2,33 = 0,699
959: 0,31 x 1,92 = 0,595
964 (auch RS, RS America, RS N/GT): Cw x A (m2) = 0,32 x 1,79 = 0,573
964 Turbo (994), (Frere): Cw x A (m2) = 0,35 x 1,88 = 0,658
964 Turbo (994), (auch WTL, Jubi) (Bongers): 0,36 x 1,89 = 0,680
964 Turbo S Leichtbau (994), (auch RS 3.8, Turbo 3.6, Turbo 3.6 Flachbau): 0,35 x 1,89 = 0,662
993 (auch RS): 0,33 x 1,86 = 0,614
993 RS Clubsport (mit Heckflügel 0° Anstellwinkel): 0,34 x 1,86 = 0,632
993 RS Clubsport (mit Heckflügel 9° Anstellwinkel): 0,36 x 1,86 = 0,669
993 GT2: 0,34 x 2,04 = 0,684
993 turbo (auch 2S, 4S, Turbo Cabrio): Cw x A (m2) = 0,34 x 1,93 = 0,656
996: Cw x A (m2) = 0,30 x 1,94 = 0,582
996 4S: 0,30 x 2,00 = 0,60
996 GT2: 0,34 x 1,96 = 0,666
996 GT3 MJ 1999 bis 2001: 0,30 x 1,95 = 0,585
996 Turbo: 0,31 x 2.0 = 0,62
997: 0,28 x 2,00 = 0,56
997 Cabrio: 0,29
997S: 0,29 x 2,00 = 0,58
997S Cabrio: 0,29
997 Turbo (auch Cabrio): 0,31 x 2,04 = 0,6324
997 GT3: 0,29 x 2,00 = 0,58
997 GT2: 0,32 x 2,05 = 0,656
997/2 (S) Facelift Coupé: 0,29 x 2,01 = 0,5829
997/2 (S) Facelift Cabrio: 0,30 x 2,01 = 0,603
997/2 C4 Facelift: 0,3 x 2,05 = 0,615
997 C4S Facelift: 0,29 x 2,05 = 0,605
997/2 C4(S) Cabrio Facelift (auch Targa 4(S): 0,30 x 2,05 = 0,615
997/2 GT3 3,8: 0.32 x 2,04 = 0,6528
997/2 GT3 RS 3,8: 0,33
997/2 Turbo: 0,31
997/2 Turbo Cabriolet: 0,32
980 Carrera GT: 0,396 x 1,94 = 0,768
Last edited by haul; 04-21-2021 at 11:42 AM.
59 750 pre unit triton
63 650 gray silver bikinitub triumph thunderbird
70 650 astralred silver triumph bonneville
65 912 slate gray "erwin"
73 914 ravennagreen "ferdl", swapped 1:1 for a
10 997 racing green awd „gustl“
erwin_loves_polo
The Konradsheim RS book shows the comparison.
Mark,
Dirk is right, Konradsheim does show some of what you're looking for....
Drag Coefficient:
911S - 0.409 (front spoiler)
Carrera RS - 0.397 (spoiler and ducktail)
Hope this helps,
cm
Chuck Miller
Creative Advisor/Message Board Moderator - Early 911S Registry #109
R Gruppe #88
TYP901 #62
'73S cpe #1099 - Matched # 2.7/9.5 RS spec rebuild
'67 Malibu 327 spt cpe - Period 350 Rebuild
’98 Chevy S-10 – Utility
’15 GTI – Commuter
That is exactly what I was after.
Thanks guy's.
Mark
I find it nice to see, that the 964 has the best values of all the
“original series” models...
and let us not forget, that the 60ies
Alfa Romeo Giulia had a drag coefficient cw of 0,34
br
haul
59 750 pre unit triton
63 650 gray silver bikinitub triumph thunderbird
70 650 astralred silver triumph bonneville
65 912 slate gray "erwin"
73 914 ravennagreen "ferdl", swapped 1:1 for a
10 997 racing green awd „gustl“
erwin_loves_polo
Saabs were better yet. Around a cd of 0.3.
Early 911S Registry # 2395
1973 Porsche 911S in Light Ivory 5sp MT
2023 Porsche Macan GTS in Gentian Blue 7sp PDK
........saab
59 750 pre unit triton
63 650 gray silver bikinitub triumph thunderbird
70 650 astralred silver triumph bonneville
65 912 slate gray "erwin"
73 914 ravennagreen "ferdl", swapped 1:1 for a
10 997 racing green awd „gustl“
erwin_loves_polo