Re: BMWs ZF 7 DCT 50 Gearbox (DSG Variant)
Ahbengdriver;185667 said:
can someone simply in simple terms so beng can understand? kekeke
This is the long awaited BMW DSG. Of late since after the Golf GTI and Audi TT older version released with DSG, many people have been interested in it.
DSG is a german word:
Direktschaltgetriebe
which means Direct Transmission. However, it is usually misunderstood to mean direct Shift Gearbox or Dual Sequential Gearbox or some other bastardization. This is typical anglo-arrogance
The Germans didn't give a damn to the English translation, in fact most of them laugh at our interpretation of DSG - just look at the German Wiki page on Direktschaltgetriebe.
I am not a rocket scientist, so my explanation may be the best
Using twin clutches, it enables shifts by applying the engine's torque to one clutch just as the engine's torque is being disconnected from the other clutch. since 1,3, 5 is on 1 clutch and 2,4,6 is on the 2nd clutch, sequential shifts are managed without any real interruption to the transmission of power to the wheels.
In all current applications I have tried, including the audi TT old and new, the Golf GTI, I cannot manage to drive smoothly without letting go the gas a little bit, and even so, it still jerks perceptibly. In short, it is hateful to me.
Current available technology cannot handle high torque without generating too much heat which requires a huge heat sink to get rid of heat. Audi and Porsche have both encountered such issues with heat, and that's why the Audi R8 is not available with DSG, but with automated robotic manual single clutch instead.
That's not to say that the technology is impossible to implement on high powered cars. The Veyron uses DSG, though made by Ricardo and not Borg Warner, using the most exotic engineering and materials to achieve. This is impossible to implement on a cheaper car, including the GT3, and therefore, R&D still continues.
However, Porsche has announced 2009 as the D-Day of releasing DSG gearboxes. This is rumoured to be a PCCB-price option, meaning S$30K or above.
The shifts done by DSG is so fast, it is incredible. Nevertheless, if you GAVE me either a DSG and a Manual6 getrag Porsche, I'd choose the manual 6, because shift speed is not everything. With a manual I'd still have fun and superior control, causing me to go around the track slower but still can talk about heel toe. with DSG, there is no more talk - just shift, and shift faster than anyone on earth.
