CloseQuote:
rfakhri said:
As I understood from the web presentation the 997 turbo will be offered with an optional mechanical differential lock with manual shift only. So for those who are going with tiptronic shift, would you sacrifice the mechanical differential lock for a bit of performance that might be picked up by a manual with mechanical differential lock? especially on non straight line performance?
Feb 19, 2006 1:22:35 PM
but I would love to test both to compare 
)Feb 19, 2006 3:28:14 PM
Quote:
Carlos from Spain said:
However if you have a rear LSD, if you spin one wheel faster than the other to a certain extent (depending on the lock of the diff) the LSD with shift torque to the other wheel therefore maintaining grip and stability and avoiding torque being needed to be sent to the front axle as much, giving a more RWD character in its handling (less understeer and better steering feedback since the front wheels won't be needed to be drive as much).
Looks like even the 997TT can benefit from it. 
Quote:
RC said:
Would you please elaborate the advantage of LSD in a AWD car for me? Have you seen the specs of the new electronically controlled AWD system for the 997 Turbo?
To take advantage of that "extra" (LSD), you need to be the hell of a driver, otherwise it won't help anything since the AWD on the 997 Turbo is so advanced and traction isn't really a problem.
Quote:
hatchback said:
A car with an open differential can only provide traction control with brakes. So when your inside rear wheel slips, the car will brake the inside rear wheel and cut the engine power in order to transfer the torque to the outside wheel. A limited-slip differential can transfer the torque from one side to the other under full power (ie., without braking or reducing engine power). It also tends to react quicker than an open differential w/ brakes. So a car with an LSD will have a big performance advantage in a corner where one of your wheels looses grip.
Quote:
Grant said:Quote:
hatchback said:
A car with an open differential can only provide traction control with brakes. So when your inside rear wheel slips, the car will brake the inside rear wheel and cut the engine power in order to transfer the torque to the outside wheel. A limited-slip differential can transfer the torque from one side to the other under full power (ie., without braking or reducing engine power). It also tends to react quicker than an open differential w/ brakes. So a car with an LSD will have a big performance advantage in a corner where one of your wheels looses grip.
I think this effect is minimized with AWD and PTM, since PTM will electronically apportion power to the front axle, until the rear wheel stops spinning. It won't be as good as LSD on the power, but close. I still believe the bigger difference will come with handling in the corners and under braking. But, LSD is probably better on the power too for the reasons you and Carlos mentioned.
I cannot imagine taking Tip without LSD, unless this is a daily driver, you face alot of traffic in your city, and you don't like shifting much...
.
Quote:
Crash said:Quote:
Grant said:Quote:
hatchback said:
A car with an open differential can only provide traction control with brakes. So when your inside rear wheel slips, the car will brake the inside rear wheel and cut the engine power in order to transfer the torque to the outside wheel. A limited-slip differential can transfer the torque from one side to the other under full power (ie., without braking or reducing engine power). It also tends to react quicker than an open differential w/ brakes. So a car with an LSD will have a big performance advantage in a corner where one of your wheels looses grip.
I think this effect is minimized with AWD and PTM, since PTM will electronically apportion power to the front axle, until the rear wheel stops spinning. It won't be as good as LSD on the power, but close. I still believe the bigger difference will come with handling in the corners and under braking. But, LSD is probably better on the power too for the reasons you and Carlos mentioned.
I cannot imagine taking Tip without LSD, unless this is a daily driver, you face alot of traffic in your city, and you don't like shifting much...
I'll take an Audi or a Benz for a daily, thank you
I don't get it. If you face such horrendous traffic on your way to work and back, that you need an auto tranny, why use a sports car as your transportation in the first place?
Quote:
997TT Tip is simply world's best car IMO...arguably world's best real-world/all-weather performance, safety, convenience/comfort of auto and infreq mtce in one awfully cheap package
Feb 19, 2006 8:39:17 PM
Feb 19, 2006 10:53:10 PM
Quote:
RC said:Quote:
rfakhri said:
As I understood from the web presentation the 997 turbo will be offered with an optional mechanical differential lock with manual shift only. So for those who are going with tiptronic shift, would you sacrifice the mechanical differential lock for a bit of performance that might be picked up by a manual with mechanical differential lock? especially on non straight line performance?
Would you please elaborate the advantage of LSD in a AWD car for me? Have you seen the specs of the new electronically controlled AWD system for the 997 Turbo?
To take advantage of that "extra" (LSD), you need to be the hell of a driver, otherwise it won't help anything since the AWD on the 997 Turbo is so advanced and traction isn't really a problem.
Quote:
Grant said:Quote:
hatchback said:
A car with an open differential can only provide traction control with brakes. So when your inside rear wheel slips, the car will brake the inside rear wheel and cut the engine power in order to transfer the torque to the outside wheel. A limited-slip differential can transfer the torque from one side to the other under full power (ie., without braking or reducing engine power). It also tends to react quicker than an open differential w/ brakes. So a car with an LSD will have a big performance advantage in a corner where one of your wheels looses grip.
I think this effect is minimized with AWD and PTM, since PTM will electronically apportion power to the front axle, until the rear wheel stops spinning. It won't be as good as LSD on the power, but close. I still believe the bigger difference will come with handling in the corners and under braking. But, LSD is probably better on the power too for the reasons you and Carlos mentioned.
I cannot imagine taking Tip without LSD, unless this is a daily driver, you face alot of traffic in your city, and you don't like shifting much...
Mar 8, 2006 3:58:05 AM
About Rennteam | Help | Terms of use | Privacy Policy | Support | Contact | Imprint | Archive
Powered by
Community
and
