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Limit the operation of differential to secure the driving force and controllability on the curve or rough road. TECHNICAL TRAX is a coined word quoted from TECHNICAL (technology) and TRAX (TRACTION-X: unknown traction), and means that unknown ultimate traction is drawn with technical development and driving technology. |
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Development target
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●Torque conductivity ●Quick response ●Heatproof ●High durability
●Easy maintenance
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| Large size clutch is required for the LSD that is corresponding to the tuning engine, for efficient transmission of the huge torque. For the example of Nissan, capacity of the clutch is secured 127cm2 per one disk, which means total effective friction area will be 764cm2 (63.7x2 sides x6 disks). It is the largest friction area among the others. |
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●Merits for large size friction disk
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Enables quicker turn especially at low-speed (parking etc.) by reducing pressure of friction disk |
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Improvement in durability of plate, disk, spring, and oil by reducing pressure of friction disk |
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Noise reduction by reducing pressure of friction disk
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long-term stabilization of a locking performance (only change of the oil is needed for the maintenance) |
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Since range of diff locking until it gets maximum is so wide, that it is possible to sense the movement of vehicle through the accelerator (Flexible response from diff that connects tires directly with accelerator ON, and let them free with Accelerator OFF). |
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Mitigation of pushing under steering |
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We applied the spring disk in T-TRAX in order to gain clutch capacity, to miniaturize the initial-torque-generating mechanism. Moreover, the spring rate turned nonlinear, suppressed change of the spring disk under the severe operation condition or prolonged use, and secured durability.
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Cam angle, 2way, and 1.5way(available on some NISSAN models)
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To give quick response characteristic that reacts to an accelerator work, the cam angle of a pressure ring was optimized and the ideal locking characteristic for drift run or circuit run is secured.
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| It is selectable from two types of differentials, 2way: locking powerfully to both of accelerator ON/OFF, and 1.5 way: lock is weakened with accelerator OFF to make penetration to the corner smooth. In addition, function of diff can also be changed if parts (pressure ring) are exchanged. |
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2WAY
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1.5WAY
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Acceleration
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Deceleration
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Acceleration
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Deceleration
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Pressure ring has opened
firmly and presses clutch plates. |
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Pressure ring has opened
firmly and presses clutch plates. |
Pressure ring has opened
mildly and clutch plates
works softly. |
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↓
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↓
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↓
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Locks each sides of tires
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Locks each sides of tires
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Does NOT lock tires
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| ●Driven tires respond sharply to the input and highly controllable dynamic driving is realized |
●Powerful traction is
obtained |
●Stable braking and
smooth turning in |
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Works best with 'drift' run |
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Compared with the product of the others, T-TRAX has overwhelming advantage on its "effectiveness". By adoption of a clutch disk with the optimal cam angle and suitable size for drift run, also the adoption of spring disk, or setup of higher initial torque, T-TRAX demonstrates preeminent performance at any situation of drift run thus the penetration angle, exact line in clipping, and even the durability in corner exit, the controllability in continuous corners, etc.
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Entering the corner
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Clipping
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Exit from corner
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turn about
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Tomei's exclusive oil is attached to the all models of T-TRAX . Moreover, in some of the kits for Nissan vehicles, T-TRAX comes with all the oil to exchange, carrier cover gasket, bearing, and oil seal as accessories.
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