Quote:
Originally Posted by knucklesplitter
With 0 hours of track time I disagree.  But from obsessing over the drawings, photos, etc. my conclusion is that when engaged, the clutches (be it 10% or 100% or whatever) will lock the center diff. at 50/50 until some differential torque (ie. loss of traction) between front/back overcomes the clutches at whatever duty cycle they are being driven. I do not know what that torque is.
You can get more than 35% at the front wheels - it will be 35% of the total torque plus whatever torque it takes to overcome the clutches (well sorta). And vice-versa for the rear too. This is described by that table "Here is a table that summarizes this:" in the DCCD FAQ article linked. Note the torque to the rear is more that 65% when the clutches are engaged (and this is an extreme example where the front is on dirt and the rear on pavement). |
My track experience tells me that having the DCCD engage under braking decreases braking distance, as it adds stability and helps prevent lockup at any one corner.
As far as how it works, I'm still confused. It seems to me that having a clutch physically lock front to rear would result in a clutch that would wear out quickly and would need to be a consumable and serviceable part. Perhaps that's why running the DCCD at 100% generates so much heat, and why you shouldn't do it except on loose surfaces, but I'm still not convinced that's the way it works.