t-lok???
12-09-2007, 08:38 PM
#1
3rd Gear Member
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Join Date: Jul 2007
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t-lok???
i know that t-lok lockes up from a stop to give both power to the wheels for off the line traction. but when does it release? and when your cornering doespower go to the inside wheel or always the same wheel? im just having a hard time figuring out what will the t-lok help as far as road track performance (not strip performance). thanks guys.
12-09-2007, 10:57 PM
#2
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Join Date: Sep 2006
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RE: t-lok???
An open differential (stock on V6 Mustangs) always applies the same amount of torque to each wheel. That is what causes the infamous ‘one wheel peel’; both wheels are receiving the same amount of torque and one of them is slipping.
A Limited Slip Differential (addition of a t-lock or as GM refers to it - ‘positraction’) is very similar to an Open Differential, but it adds a spring pack and a set of clutches. The spring pack pushes the side gears against the clutches, which are attached to the cage. Both side gears spin with the cage when both wheels are moving at the same speed, and the clutches aren't really needed - the only time the clutches step in is when something happens to make one wheel spin faster than the other, as in a turn. The clutches fight this behavior, wanting both wheels to go the same speed. If one wheel wants to spin faster than the other, it must first overpower the clutch. The stiffness of the springs combined with the friction of the clutch determine how much torque it takes to overpower it.
As an example, in the situation where one drive wheel is on ice and the other one has good traction, with an LSD, even though the wheel on the ice is not able to transmit much torque to the ground, the other wheel will still get the torque it needs to move. The torque supplied to the wheel not on the ice is equal to the amount of torque it takes to overpower the clutches. The result is that you can move forward, although still not with the full power of your car. This is why LSDs are popular in Drag Racing - they minimize wasteful wheel spin on a hard launch.
A Limited Slip Differential (addition of a t-lock or as GM refers to it - ‘positraction’) is very similar to an Open Differential, but it adds a spring pack and a set of clutches. The spring pack pushes the side gears against the clutches, which are attached to the cage. Both side gears spin with the cage when both wheels are moving at the same speed, and the clutches aren't really needed - the only time the clutches step in is when something happens to make one wheel spin faster than the other, as in a turn. The clutches fight this behavior, wanting both wheels to go the same speed. If one wheel wants to spin faster than the other, it must first overpower the clutch. The stiffness of the springs combined with the friction of the clutch determine how much torque it takes to overpower it.
As an example, in the situation where one drive wheel is on ice and the other one has good traction, with an LSD, even though the wheel on the ice is not able to transmit much torque to the ground, the other wheel will still get the torque it needs to move. The torque supplied to the wheel not on the ice is equal to the amount of torque it takes to overpower the clutches. The result is that you can move forward, although still not with the full power of your car. This is why LSDs are popular in Drag Racing - they minimize wasteful wheel spin on a hard launch.
12-10-2007, 09:29 AM
#3
4th Gear Member
Join Date: Aug 2006
Location: TX
Posts: 1,007
RE: t-lok???
"An open differential (stock on V6 Mustangs) always applies the same amount of torque to each wheel."? The stock open diffsends power/torque to only the passenger side rear wheel? Driver side wheel doesnt get power or torque. With a
Tlok both wheels will get power to the ground and it will also let the rear tirerotate at a different speed around corners like an open diff.
Tlok both wheels will get power to the ground and it will also let the rear tirerotate at a different speed around corners like an open diff.
ORIGINAL: RedFire281
An open differential (stock on V6 Mustangs) always applies the same amount of torque to each wheel. That is what causes the infamous ‘one wheel peel’; both wheels are receiving the same amount of torque and one of them is slipping.
A Limited Slip Differential (addition of a t-lock or as GM refers to it - ‘positraction’) is very similar to an Open Differential, but it adds a spring pack and a set of clutches. The spring pack pushes the side gears against the clutches, which are attached to the cage. Both side gears spin with the cage when both wheels are moving at the same speed, and the clutches aren't really needed - the only time the clutches step in is when something happens to make one wheel spin faster than the other, as in a turn. The clutches fight this behavior, wanting both wheels to go the same speed. If one wheel wants to spin faster than the other, it must first overpower the clutch. The stiffness of the springs combined with the friction of the clutch determine how much torque it takes to overpower it.
As an example, in the situation where one drive wheel is on ice and the other one has good traction, with an LSD, even though the wheel on the ice is not able to transmit much torque to the ground, the other wheel will still get the torque it needs to move. The torque supplied to the wheel not on the ice is equal to the amount of torque it takes to overpower the clutches. The result is that you can move forward, although still not with the full power of your car. This is why LSDs are popular in Drag Racing - they minimize wasteful wheel spin on a hard launch.
An open differential (stock on V6 Mustangs) always applies the same amount of torque to each wheel. That is what causes the infamous ‘one wheel peel’; both wheels are receiving the same amount of torque and one of them is slipping.
A Limited Slip Differential (addition of a t-lock or as GM refers to it - ‘positraction’) is very similar to an Open Differential, but it adds a spring pack and a set of clutches. The spring pack pushes the side gears against the clutches, which are attached to the cage. Both side gears spin with the cage when both wheels are moving at the same speed, and the clutches aren't really needed - the only time the clutches step in is when something happens to make one wheel spin faster than the other, as in a turn. The clutches fight this behavior, wanting both wheels to go the same speed. If one wheel wants to spin faster than the other, it must first overpower the clutch. The stiffness of the springs combined with the friction of the clutch determine how much torque it takes to overpower it.
As an example, in the situation where one drive wheel is on ice and the other one has good traction, with an LSD, even though the wheel on the ice is not able to transmit much torque to the ground, the other wheel will still get the torque it needs to move. The torque supplied to the wheel not on the ice is equal to the amount of torque it takes to overpower the clutches. The result is that you can move forward, although still not with the full power of your car. This is why LSDs are popular in Drag Racing - they minimize wasteful wheel spin on a hard launch.
12-10-2007, 01:51 PM
#4
Join Date: Aug 2006
Location:
Posts: 12
RE: t-lok???
I've seen a lot of questions on open diffs vs. closed diffs lately, and also questions relating to whether the torque of the V6 is only applied to the passenger side rear wheel. See http://auto.howstuffworks.com/differential3.htmfor a very good explanation of how differentials work and the impact on traction of the different kinds of diff's.
The V6 open differential does give the same amount of torque to both wheels, under all circumstances. The downside of the open differential however is that this amount of torque is limited by the min. amount of available traction on either of the wheels. Thus, in slippery conditions, torque is very limited.
Quote: "The open differential always applies the same amount of torque to each wheel. There are two factors that determine how much torque can be applied to the wheels: equipment and traction. In dry conditions, when there is plenty of traction, the amount of torque applied to the wheels is limited by the engine and gearing; in a low traction situation, such as when driving on ice, the amount of torque is limited to the greatest amount that will not cause a wheel to slip under those conditions."
DutchPony
The V6 open differential does give the same amount of torque to both wheels, under all circumstances. The downside of the open differential however is that this amount of torque is limited by the min. amount of available traction on either of the wheels. Thus, in slippery conditions, torque is very limited.
Quote: "The open differential always applies the same amount of torque to each wheel. There are two factors that determine how much torque can be applied to the wheels: equipment and traction. In dry conditions, when there is plenty of traction, the amount of torque applied to the wheels is limited by the engine and gearing; in a low traction situation, such as when driving on ice, the amount of torque is limited to the greatest amount that will not cause a wheel to slip under those conditions."
DutchPony
12-10-2007, 05:59 PM
#7
RE: t-lok???
stock open diffs give power to both wheels till one looses traction, then 100% of the power is going to that one wheel, a limited slip gives power to both but can be changed for cornering, a locker will lock the rear wheels together
it will stop giving power to both on a bolt on car, ona hard launch with sticky tires when you blow the spider gears out of it, [8D]
it will stop giving power to both on a bolt on car, ona hard launch with sticky tires when you blow the spider gears out of it, [8D]
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