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Old 09-26-2013, 11:34 AM   #29
socal87
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Originally Posted by boost pls View Post
Right, I understand this. I guess I just asked the wrong question... The clutch in front of the rear differential allows slip, which accommodates differences in speed between the front and rear axles. I understand this difference would occur when either the front or rear was losing traction.

But the example of having someone drive around in a tight circle to see how the system behaves with the race controller.. If the clutch were fully locked and the person was driving slowly in a tight circle both the front and rear axles would be spinning at the same speed right? So there would be no issue with tire wear... or am I missing something?
If the clutch pack is fully locked and doesn't allow for any slip between the two axles, then driving in a tight circle will result in bucking or scrubbing tires. So, if one were to drive with the clutch pack 100% locked 100% of the time, you'd definitely see increased tire wear and possibly drivetrain damage.
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Old 09-26-2013, 11:43 AM   #30
socal87
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Originally Posted by intoflatlines View Post
So I'm confused... If the mechanics of the haldex system won't allow for greater than 50% torque to the rear wheels even if the front wheels are on ice, then how would a haldex controller upgrade allow for 60% or more to the rear wheels? Unless I'm just completely missing the point

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They advertise 100% to the rear axle; if the front wheels have no traction then indeed you will see close to 100% of available engine torque being used at the rear axle. However the front axle will spin at the same rate. Imagine a simple chain and sprocket system connecting the two axles. The system cannot direct ALL power to the rear axle as there is no center diff. Its either 100% to the front, or 50% to both. The angle drive for the propeller shaft to the rear is driven by an extension of the front differential case. So, you could completely remove both front halfshafts, and put a machined block in place of the clutch pack, and your Golf R would be RWD.

This would not be possible with a clutch pack because the system reads the ABS wheel speed sensors to determine when the front wheels are slipping. If the front wheels aren't driven...
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Old 12-27-2016, 12:42 PM   #31
0-60Motorsports
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Guys can someone please tell me the front drive ratio for the diff. Thanks

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