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Quaife ATB Rear Differential
Cayman S - Boxster S (3.4) Manual only.
2008 details.
* £675.00GBP *
*Euro 908* * $1341 US*
(* Dependant on exchange rate from GBP (£))
Prices plus shipping.
I have now secured a further allocation of 5 units, due the 2nd week June
JUNE08................ I Now Have -3- Units Left
#1.azect ..(HK) (Confirmed & PAID)
#2..Glenn..(Confirmed & PAID)
#3..
#4..
#5..
To purchase follow link:Motordrive Seats CaymanClub Group Buys
Please also note: If you are paying via PayPal you MUST add a shipping item to your Basket...!! It would help if you added this anyway even if you are paying by card
__________________ allan@motordrive.com
I'm interested in knowing who in houston, texas can install this correctly and at what cost - if you can give me an idea of labor estimate. thanks, alex
Motordrive
Motordrive
Moslo Mill
Ebury Street
Radcliffe
Manchester
M26 4BL
UK
With an ordinary open differential, a lot of precious power is wasted during wheel spin under acceleration. This happens because the open differential shifts power to the wheel with less grip, along the path of least resistance. The torque capacity of the TBD/ATB unit is increased or decreased by varying the helix and pressure angles of the gear teeth. The operation is automatic and the unit is a direct replacement with the stock differential. There are no clutch plates as in more conventional limited-slip designs.
The Torque Biasing Differential or A.T.B., however, does just the opposite. It senses which wheel has better grip, and biases the power to that wheel. It does this smoothly and constantly, and without ever completely removing power from the other wheel. In drag-race style, straight-line acceleration runs, this results in a close to ideal 50/50 power split to both drive wheels, resulting in essentially twice the grip of an ordinary differential.
To see the installation of a TBD style unit Click Here
I'm interested in knowing who in houston, texas can install this correctly and at what cost - if you can give me an idea of labor estimate. thanks, alex
Can anybody help Alex in or around Houston for fitting ??????
I have now secured a further allocation of 5 units, due Mid June JUNE08................ I Now Have -2- Units Left
#1.azect ..(HK) (Confirmed & PAID)
#2..Glenn.. (Confirmed & PAID)
#3..FriscoCayman..(Confirmed & PAID)
#4..
#5..
To purchase follow link:Motordrive Seats CaymanClub Group Buys
Please also note: If you are paying via PayPal you MUST add a shipping item to your Basket...!! It would help if you added this anyway even if you are paying by card
TBD - Torque Biasing Differential
With an ordinary open differential, a lot of precious power is wasted during wheel spin under acceleration. This happens because the open differential shifts power to the wheel with less grip, along the path of least resistance. The torque capacity of the TBD/ATB unit is increased or decreased by varying the helix and pressure angles of the gear teeth. The operation is automatic and the unit is a direct replacement with the stock differential. There are no clutch plates as in more conventional limited-slip designs.
The Torque Biasing Differential or A.T.B., however, does just the opposite. It senses which wheel has better grip, and biases the power to that wheel. It does this smoothly and constantly, and without ever completely removing power from the other wheel. In drag-race style, straight-line acceleration runs, this results in a close to ideal 50/50 power split to both drive wheels, resulting in essentially twice the grip of an ordinary differential.
To see the installation of a TBD style unit Click Here
Alan,
Thanks for the LSD! Had it installed last weeks with the Softronics Plenum and Flash and it truly is a trip. Seriously, the car comes around much better on slow high powered corners with the diff and the Softronics package is really appreciable.
Plenum
The plenum is the piece that goes between the Cayman throttle body and the intake runners. The factory piece is a long black plastic tube with a divider down the middle. There are aftermarket replacements which are designed to allow the air to flow easier/faster into the engine and increase horsepower and torque.
LSD - Limited Slip Differential
A limited slip differential (LSD) is a modified or derived type of differential gear arrangement that allows for some difference in rotational velocity of the output shafts, but does not allow the difference in speed to increase beyond a preset amount. In an automobile, such limited slip differentials are sometimes used in place of a standard differential, where they convey certain dynamic advantages, at the expense of greater complexity.
The main advantage of a limited slip differential is found by considering the case of a standard (or "open") differential where one wheel has no contact with the ground at all. In such a case, the contacting wheel will remain stationary, and the non-contacting wheel will rotate freely– the torque transmitted will be equal at both wheels, but will not exceed the threshold of torque needed to move the vehicle, thus the vehicle will remain stationary. In everyday use on typical roads, such a situation is very unlikely, and so a normal differential suffices. For more demanding use however, such as driving off-road, or for high performance vehicles, such a state of affairs is undesirable, and the LSD can be employed to deal with it. By limiting the velocity difference between a pair of driven wheels, useful torque can be transmitted as long as there is some friction available on at least one of the wheels.
To see the installation of a LSD style unit Click Here -> Article Forthcoming Stay Tuned
Thanks David.....If your HAPPY. then I'm Happy (Now go turm PSM off and P L A AAAAAAAAAY )
[making sure you've got plenty of room to start off with !!!!!!!]
PSM - Porsche Stability Management
While it can’t overcome the laws of physics, the revolutionary Porsche Stability Management (PSM) system does lend an added degree of balance and control to the Cayman’s mid-engine driving dynamics, inspiring surefooted confidence in corners and extreme situations.
A standard feature on the Cayman and Cayman S, PSM continuously monitors steering input, road speed, yaw velocity and lateral acceleration to calculate the actual direction of travel. If the car begins to steer off line, PSM instantly intervenes with precision brake inputs on individual wheels to help bring the car back onto the driver’s intended path.
If braking alone isn’t enough to correct the vehicle’s cornering line, PSM then calls on the Cayman’s engine management system, adjusting engine output as needed to help stabilize handling. PSM can also compensate in an instant for mid-corner changes in load resulting from deceleration or braking. When Sport mode is selected with the optional Sport Chrono Package, PSM’s threshold for intervention is raised, allowing for greater driver involvement. If you prefer driving without automatic PSM assistance, the system can be set to standby at any time. In this case, it will only intervene under heavy braking, where both front wheels exceed the ABS threshold.
For all of its technical ability, PSM goes virtually unnoticed in everyday driving situations, preserving the Cayman’s natural agility.