Different ACD modes affect on handling?
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Joined: Jul 2009
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From: St. John's
Different ACD modes affect on handling?
Could anyone either explain, or link me to something that explains the differences in handling charachteristics between the following modes:
-Tarmac
-Gravel
-Snow
I've searched the forum, but I'm not having much luck. Does the ACD change the torque split front/rear?
Thanks!
-Tarmac
-Gravel
-Snow
I've searched the forum, but I'm not having much luck. Does the ACD change the torque split front/rear?
Thanks!
the center diff transfers torque a little less aggressively when not in tarmac mode. I tried power driving on a dirt road in tarmac (forgot to change setting) and it alternated between under steer and oversteer unpredictably with the advan street rubber. switched it to gravel and it drove perfectly balanced and went where I wanted it with the AYC and center diff biasing torque a bit more slowly.
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Joined: Jan 2009
Posts: 68
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From: Salem Ma
It might. I usually change them for auto-x, I find Gravel with the ACD full off, no brake assist works the best for me.
At the flywheel the engine is giving 100% power. It goes into the transfer case (center diff) and at the most, 50% will go to the front and 50% will go to the rear. The ACD then changes how much of the 50% goes to each set of wheels. You will never have 100% power to the front wheels or 100% power to the rear wheels. Its more like 10% front and 50% rear during Tarmac mode for example to give the sensation of a RWD car. The ACD modes alter how quickly that change happens. Tarmac applies more power to the rear of the car quicker, Gravel is not quite as quick and Snow mostly leans to a 50/50 lock up, The computer is assuming things about the surface your driving on. Tarmac would have more grip than Gravel and Gravel more grip than Snow. I run Gravel mode during auto-xing because I find the car wants to power oversteer at corner exit far to often when in Tarmac mode. Pretty much you want the car to apply power to the rear wheels first as you exit a corner then as the fronts straighten out have power applied to them to maximize corner exit speed. I hope that helps you understand.
At the flywheel the engine is giving 100% power. It goes into the transfer case (center diff) and at the most, 50% will go to the front and 50% will go to the rear. The ACD then changes how much of the 50% goes to each set of wheels. You will never have 100% power to the front wheels or 100% power to the rear wheels. Its more like 10% front and 50% rear during Tarmac mode for example to give the sensation of a RWD car. The ACD modes alter how quickly that change happens. Tarmac applies more power to the rear of the car quicker, Gravel is not quite as quick and Snow mostly leans to a 50/50 lock up, The computer is assuming things about the surface your driving on. Tarmac would have more grip than Gravel and Gravel more grip than Snow. I run Gravel mode during auto-xing because I find the car wants to power oversteer at corner exit far to often when in Tarmac mode. Pretty much you want the car to apply power to the rear wheels first as you exit a corner then as the fronts straighten out have power applied to them to maximize corner exit speed. I hope that helps you understand.
It might. I usually change them for auto-x, I find Gravel with the ACD full off, no brake assist works the best for me.
At the flywheel the engine is giving 100% power. It goes into the transfer case (center diff) and at the most, 50% will go to the front and 50% will go to the rear. The ACD then changes how much of the 50% goes to each set of wheels. You will never have 100% power to the front wheels or 100% power to the rear wheels. Its more like 10% front and 50% rear during Tarmac mode for example to give the sensation of a RWD car. The ACD modes alter how quickly that change happens. Tarmac applies more power to the rear of the car quicker, Gravel is not quite as quick and Snow mostly leans to a 50/50 lock up, The computer is assuming things about the surface your driving on. Tarmac would have more grip than Gravel and Gravel more grip than Snow. I run Gravel mode during auto-xing because I find the car wants to power oversteer at corner exit far to often when in Tarmac mode. Pretty much you want the car to apply power to the rear wheels first as you exit a corner then as the fronts straighten out have power applied to them to maximize corner exit speed. I hope that helps you understand.
At the flywheel the engine is giving 100% power. It goes into the transfer case (center diff) and at the most, 50% will go to the front and 50% will go to the rear. The ACD then changes how much of the 50% goes to each set of wheels. You will never have 100% power to the front wheels or 100% power to the rear wheels. Its more like 10% front and 50% rear during Tarmac mode for example to give the sensation of a RWD car. The ACD modes alter how quickly that change happens. Tarmac applies more power to the rear of the car quicker, Gravel is not quite as quick and Snow mostly leans to a 50/50 lock up, The computer is assuming things about the surface your driving on. Tarmac would have more grip than Gravel and Gravel more grip than Snow. I run Gravel mode during auto-xing because I find the car wants to power oversteer at corner exit far to often when in Tarmac mode. Pretty much you want the car to apply power to the rear wheels first as you exit a corner then as the fronts straighten out have power applied to them to maximize corner exit speed. I hope that helps you understand.
Sweet explanation... even I learned something toda; No wonder why the car seems to have faster rolling reaction in Tarmac than in Gravel/Snow!
this is, by far, the best explanation: https://www.evolutionm.net/forums/ev...everybody.html
this is, by far, the best explanation: https://www.evolutionm.net/forums/ev...everybody.html
More fuel for my brain!
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