Quote:
Originally Posted by Suberman
There are plenty of planetary transmissions in high end sportscars, depending on your definition.
There is no inherent superiority to a DCT over a planetary gearbox. In fact, the planetary transmission is more efficient, lighter and handles more torque. Also, planetary transmissions are likely to be more durable.
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I don't think this is true.
The RX-8 with an automatic had 30hp less than the manual. The reason was because the redline on the automatic was at 7500rpm -- the limit a 'slushbox' could handle. The manual, on the other hand, redlined at 9000rpm.
The supercars with "automatics" these days are almost certainly automated manuals (whether twin clutch or not).
I'm willing to be proven wrong on this, but will require specific evidence -- what supercar do you think is using a traditional planetary gearbox automatic transmission?
...Paul