PDK Transmission question - Page 2 - 6SpeedOnline - Porsche Forum and Luxury Car Resource

Dec 30, 2011 | 10:55 AM

#16

GTgears

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Joined: Oct 2009

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From: Boulder, CO

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Quote:

Originally Posted by Cajundaddy

A PDK Cay S is faster in both a 1/4 mile and a road course than a 6 speed even with the extra rotational weight. Do we really care what the parasitic loss % is? I guess I am sort of a bottom line guy. More interested in the checkered flag than the dyno sheet. YMMV

Something that must be considered when looking at the 1/4 mi time is the gear ratios. The PDK ratios are much shorter and are going to offer better acceleration. Not all of the faster time in the 1/4 mi in the published numbers is a result of the PDK shifting more quickly...

http://www.cars-intl.com/cayman-s-technical-data.html

Dec 31, 2011 | 07:41 AM

#17

heavychevy

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Shorter ratios and launch control are never considered as the additional benefits included with PDK and DSG type transmissions when they provide bigger advantages than the shifts themselves.