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Old 06-01-2011, 08:21 PM   #6 (permalink)
aerohead
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Mk 1 Golf @ Cd 0.34

Quote:
Originally Posted by focus1.6uk View Post
Hello

Found some pics and info on a 1981 Shell eco marathon VW golf Mk1 diesel, and Formel E road car.

Marathon Golf 1600cc diesel:
-smooth wheel covers
-grille block
-air dam
-roof extension
-side skirts
-aero A pillar covers
-exterior mirrors removed

Formel E 1100cc petrol:
-Front spoiler
-aero A pillar covers
-extra long economy 4th gear
-gear shift indicator
-fuel comsumption gauge (works in 4th gear only)
-high compression 1.1 GG engine

Apparently some Formel E models (not sure if the golf is included) had a stop/ start system.

And from this thread http://ecomodder.com/forum/showthrea...2-12384-5.html Cd & CdA values for the mk1 golf:

Mk1 Cd: 0.42
Mk 1 Cd.A = 0.83

Havent been able to find figures for the Shell marathon or Formel E cars, or which model the 0.42 Cd is attributed to.

Interesting the Mk2 golf which is also pretty much the same shape (but larger) has:
Mk2 Cd: 0.34
Mk 2 Cd.A = 0.70

Probably due to both detail and shape optimisation (think this was in Hucho's book).
Hucho's table for the Mk 1 Golf reveals a drag reduction from Cd 0.42,to Cd 0.34 when the hatch angle is relaxed from its factory angle,up to the 'Template' line.So the 1st gen Golf/Rabbit could have gone into production @ Cd 0.34.
Today,we've almost caught up to the VW 2000 of 1980.
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