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BMW 3-Series (E90 E92) Forum
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Humm, what I did today
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04-30-2008, 05:23 AM | #1 |
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Humm, what I did today
Must say this is awesome, don't know HOW I did not do this earlier but there is a few corners near home that are much more fun.
Wheel spin / nanny intervention is much less pronounced at WOT although I have not really given it much stick due to traffic. But my front lawn now has 2 very well defined 'wear marks' much to my mrs's disgust Not sure how to label the pics but the order is; Before (relief actually that it was bolted) During (went together pretty easily for Andrew @ ALS in Rydalmere) After (as it was being put back together) I guess I now need to book myself on another skid pan day to learn how it affects things & more importantly how to utilize it at the edge. |
04-30-2008, 06:07 AM | #4 |
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This is what should be fitted to all 335 BMW's but is not.
BMW chose to save money by adding an open diff arrangement, as the cars are now electronically controlled to prevent slides and wheel spin via DTC/DSC "nanny aids". These "nanny aids" sense when the wheels are spinning or sliding and for the sake of stability, individually brakes the wheels via the ABS System and the other limits engine torque via the ECU till traction is re-established.....way to go BMW What you're looking at above by the lucky bast..d, is the aftermarket Quaife ATB differential unit which sits inside the 335's diff housing and replaces the open diff . It's basically a LSD (limited slip diff) but has special features like torque biasing. These units have no clutch plates that wear out over time but incorporate gearing to adjust the torque delivery to the rear wheel that needs it most - the one not spinning. The rear wheel that is spinning will have it's torque reduced .......hello controllable powerslides.. aka drifting !! Read this from Birds for a description: " Quite simply, it increases the torque presented at the tyre contact patch with the road, which increases the force exerted on the road, and, as Mr Newton states, this increases the rate of acceleration. In the situation where one wheel is spinning, a car with an "open" diff can potentially lose all drive. This ATB diff prevents the wheel with the least grip from spinning, traction control is therefore not triggered anywhere near as often, and the car accelerates to its true potential ". .
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04-30-2008, 08:55 AM | #7 |
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That is the schnitzel.
Total spondoolies WOPLAX? C'mon, we all need to budget for one and how can you make a budget if you don't know the goal!
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04-30-2008, 03:05 PM | #8 | |
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Just take baby steps, give it one big stab of throttle mid corner, let the car rotate around the front wheels, lift off, feel it...Don't give the throttle a second press until you are comfortable with this initial feeling. These videos might help! Disclaimer: Don't drive around with a knife on your bonnet. [u2b]3X8YGvsrkuA&feature=related[/u2b]
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