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ST/RS Fords
Focus RS
2016 rs - awd
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<blockquote data-quote="rick021808" data-source="post: 15139718" data-attributes="member: 176986"><p>Watch the video at around 12:25.</p><p>Basically it is very similar to a fwd car and it does have the front differential in the transmission and no center differential. But off the transmission is a power transfer unit that is always sending power to the rear axle. From the rear axle, there is just a ring and Pinon, it is not a open diff with spider gears and from there, there is 2 clutch packs that controls the power to each wheel. </p><p></p><p>Now when they say that 100% of the torque can be sent to the rear wheels. That does not mean that the front wheels don't have any power at all. That just means if there is zero traction on the front tires and only one rear tire has traction, the car will still move. The other tires may be spinning but all(100%) of the torque is going to the one tire. </p><p>When car manufacturers says there is a 30/70 torque split or whatever, even if it is a fixed torque split, that may not always be the case. That is just the split it will give you when you have traction on all 4 tires.</p><p> If you ever watch the awd roller tests on you tube. I think the focus rs would do very well. I think the only time it would struggle/fail is if both rear wheels and one front wheel was on rollers. Since the front diff is open, it would be dependent on how well the brake traction control (torque vectoring) works. </p><p>The way the awd system is set up, it is similar to a 4x4 with a rear diff lock traction wise. Many awd systems on small cars or crossovers , if the front wheels have zero traction, the awd system is not strong enough to move the car with only the rear wheels. This is not the case with the Focus RS.</p></blockquote><p></p>
[QUOTE="rick021808, post: 15139718, member: 176986"] Watch the video at around 12:25. Basically it is very similar to a fwd car and it does have the front differential in the transmission and no center differential. But off the transmission is a power transfer unit that is always sending power to the rear axle. From the rear axle, there is just a ring and Pinon, it is not a open diff with spider gears and from there, there is 2 clutch packs that controls the power to each wheel. Now when they say that 100% of the torque can be sent to the rear wheels. That does not mean that the front wheels don't have any power at all. That just means if there is zero traction on the front tires and only one rear tire has traction, the car will still move. The other tires may be spinning but all(100%) of the torque is going to the one tire. When car manufacturers says there is a 30/70 torque split or whatever, even if it is a fixed torque split, that may not always be the case. That is just the split it will give you when you have traction on all 4 tires. If you ever watch the awd roller tests on you tube. I think the focus rs would do very well. I think the only time it would struggle/fail is if both rear wheels and one front wheel was on rollers. Since the front diff is open, it would be dependent on how well the brake traction control (torque vectoring) works. The way the awd system is set up, it is similar to a 4x4 with a rear diff lock traction wise. Many awd systems on small cars or crossovers , if the front wheels have zero traction, the awd system is not strong enough to move the car with only the rear wheels. This is not the case with the Focus RS. [/QUOTE]
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