The Tracsport Ultra™ Sierra 7” LSD has been developed and tested over a five year period. It has been fitted into a Caterham Duratec race car, replacing a standard ZF LSD. Instant improvements of lap times were achieved of up to two seconds per lap at Castle Combe.
The Caterham was able to negotiate corners faster, with reduction in power oversteer on the limit, enabling the car to handle better. Another enhancement was greatly increased acceleration from a standing start.
This LSD is capable of transferring torque at least double that of any currently available Sierra 7” LSD. There is also minimal noise (NVH) during use.
In four years of racing/testing the static preload stayed exactly the same with no drop-off, the LSD was checked after season two and four of racing with no wear & scoring of the plates.
If a plate type LSD is capable of doing its job of preventing wheel spin, then the internal components will not be articulating under load resulting in no additional heat build-up and associated wear.
If an LSD suffers from scored worn out plates then it is simply not capable of dealing with the torque being transferred through it.