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Originally Posted by Dr1ven
Has anyone had in the seat experience with the two on street / track. I'm currently in an 06 Cayman S and am seriously considering swapping for a low mileage 996 GT3 (2004). Just looking for some honest feedback. Was engaged but passed on one that has had the RMS replaced 3 times in 2 years.
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I've driven both on the street and I've been a passenger in both on the track. They are quite different. The GT3 has a MUCH better engine (more powerful, higher revving and more durable), clutch-type asymetrical
LSD, tranny cooler, and more track-ready and adjustable suspension out of the box. I'd give a big advantage to the GT3 for track work.
The Cayman S is perhaps the better roadcar though - better seats and comfort and very delicate steering and mid-engined handling, better safety with
PSM. GT3 is not that fun on the street, unless you're really pushing at the limits of safety for yourself and other drivers.
A Cayman S can be made into quite a competent track car (suspenion is the first place to focus), but it will never have the race-derived drivetrain of the GT3, no matter what you spend.
As for the RMS issue - I think that was bad luck with that particular GT3. Overall, the GT3 should have fewer RMS issues than Cayman...
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LSD - Limited Slip Differential
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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 |
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PSM - Porsche Stability Management
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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. |
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