Open Rear Differential. Open Front Differential

A viscous coupling installed instead of a center differential, with freewheel mechanism to disconnect the driven axle when braking. Open rear differential. Open front differential. In normal conditions, this is a front wheel drive vehicle. In normal driving conditions 95% of torque transferred to front axle. Because viscous coupling is considered to be "slow" (some time is needed for silicone fluid to warm-up and solidify), 5% of torque is transferred to rear axle at all times to "pre-tension" the viscous coupling and reduce activation time. The coupling locks when slipping occurs and up to near 100% of torque is automatically transferred to rear axle. In on-road conditions the car will not move if one front wheel and one rear wheel lose traction. The freewheel segment, installed inside the rear differential, lets rear wheels rotate faster than front wheels without locking the viscous coupling and preventing ABS from applying brakes to each wheel independently.

Because of the freewheel, torque can be transferred to rear axle only when vehicle is moving forward. For all wheel drive to work when reversing, a vacuum-actuated "throttle control element" is installed on the differential case. This device locks the freewheel mechanism when in reverse gear. The freewheel mechanism unlocks when the gear shift lever is pushed to the right pass the 3rd gear. Disadvantages of this all wheel drive system are related to actuation time of the viscous coupling. 1: When cornering under acceleration on a slippery surface, rear axle is engaged with delay causing sudden change in the car's behaviour (from understeer to oversteer). 2: When starting on a sandy surface, front wheels can dig into the sand before all wheel drive is engaged. Figure: Volkswagen Golf MkII Syncro rear axle gear unit with visco-clutch, free-wheel unit, and bevel gear differential. Have you seen a better description of Volkswagen Golf Mk2 Syncro, Passat B3, B4, Sharan Syncro (1996-2001) on the web? Please send us the link to or post it in a comment below!

The 2013 Acura RDX has a 17.2 degrees angle of approach. What is the angle of departure of the 2013 Acura RDX? The 2013 Acura RDX has a 22.0 degrees angle of departure. What is the rear hip room of the 2013 Acura RDX? The 2013 Acura RDX has 53.8 in. What is the rear head room of the 2013 Acura RDX? The 2013 Acura RDX has 38.2 in. What is the front leg room in the 2013 Acura RDX? The 2013 Acura RDX has 42.1 in. What is the rear shoulder room of the 2013 Acura RDX? The 2013 Acura RDX has 57.2 in. What kind of fuel does the 2013 Acura RDX use? The 2013 Acura RDX runs on premium unleaded (required). What is the front head room in the 2013 Acura RDX? The 2013 Acura RDX has 38.7 in. What is the rear leg room of the 2013 Acura RDX?

The 2013 Acura RDX has 38.3 in. What is the front hip room in the 2013 Acura RDX? The 2013 Acura RDX has 55.7 in. What is the front shoulder room in the 2013 Acura RDX? The 2013 Acura RDX has 58.7 in. What is the front track of the 2013 Acura RDX? The front track of the 2013 Acura RDX is 5 ft. 3.1 in. (63.1 in.). What ground clearance does the 2013 Acura RDX have? The ground clearance of the 2013 Acura RDX is 0 ft. 8.1 in. (8.1 in.). What is the wheel base of the 2013 Acura RDX? The 2013 Acura RDX has a 8 ft. 9.7 in. (105.7 in.) wheel base. What is the drivetrain warranty on the 2013 Acura RDX? The drivetrain warranty of the 2013 Acura RDX is 6 yr./ 70000 mi.. What is the base engine size of the 2013 Acura RDX? The 2013 Acura RDX has a 3.5 L base engine size.