Viermalvier.de, das Geländewagenportal Forums viermalvier markenunabhängiger talk Geländewagentechnik allgemein AWD Gang 1-4, 2WD drüber...

aus der Sportwagenwelt:
Allradantrieb mal anders. In den ersten beiden Gängen kriegt die Vorderachse eine Übersetzung, in Gang 3-4 die zweite Übersetzung, Gang 5-7 nur Heckantrieb. Der Schlupf verpufft in einer ölgekühlten Lamellenkupplung. Das ist abgefahren! Wohl dem, der genug Leistung hat um welche verpuffen zu lassen. Leistung kommt von "sich leisten können", oder? ;-))

Quelle:
http://www.sae.org/mags/AEI/9558

Zitat:
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The Ferrari 4RM all-wheel-drive system is audacious in its design. Engineers decided that the front wheels will only transmit power in the lower four gears; in fifth through seventh gears, the FF is purely rear-wheel drive.

The front-drive module (Ferrari calls it the Power Transfer Unit) draws power from the front of the FF’s direct-injected 660-hp (492-kW) 6.3-L V12 engine. The drive module has only two gears; its first gear works with first and second gear in the dual-clutch main transmission, and its second gear is used with third and fourth gears in the main transmission, which is integrated with the rear drive axle.

Controlled slip of the oil-bathed carbon fiber clutches matches front wheel speed to that of the rear. The front wheels are geared 6% higher in their first and second gears than the rear wheels in their second and fourth gear, so the car can turn the front wheels faster than the rears in slippery conditions, Febeli explained.

The front transmission can handle up to 20% of the engine’s 504-lb·ft (683 N·m) when helping the FF churn through wintry weather. Directing some of that torque through the front wheels is also beneficial for dry weather performance, he added. The car’s claimed 3.7-s 0-100 kph acceleration time is 0.3 s faster than it would be with rear drive alone, he said.

All-wheel-drive systems frequently sap vehicle performance because of their weight, but the 4RM system supplied by Carraro SpA adds only 35-40 kg (77-88 lb), according to Febeli. He said this is half the mass of a traditional AWD system.
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Da war aber jemand schneller

da darfste dann halt nicht in der langen linkskurve auf der bahn
im vierten hart am gas und dann knallste den 5. rein
und wieder auf "full throttle".

obwohl, ist ja nur ein italiener, ist eh nicht schade drum....