For nearly a decade Honda has been developing and using the Dual Clutch Transmission on everything from ATV’s and dirt bikes to high end race cars and the new Talon.
DUAL CLUTCH TRANSMISSION
Honda debuted the Dual Clutch Transmission (DCT) for production powersports use on the 2010 VFR1200F sport-touring motorcycle, and while similar systems can be found in a number of high-performance sports cars, DCT remains a Honda exclusive in motorcycles, ATVs, and side-by-sides.
As the name indicates, DCT uses two clutches that are controlled by sophisticated electronics and hydraulics. One clutch, which rides on a hollow outer shaft, controls odd-numbered gear sets (1, 3, 5); the other clutch rides on an inner shaft and controls even-numbered gear sets (2, 4, 6). Multiple gears are engaged simultaneously so that the transmission is constantly prepared for the next shift. Data, collected by a series of sensors, is processed by the ECU, which uses an advanced algorithm to determine when the shift-control motor should electronically trigger gear-changes. At those moments, one clutch disengages and the other engages, resulting in shifts that are quick, smooth and seamless. A geared transmission that shifts automatically, DCT enables a direct, connected feeling between the foot pedal and the rear wheels, as well as an efficient transfer of power. It also boasts durability, flexibility, true engine braking, and quick, smooth gear changes.
The Talon’s six-speed DCT offers two fully automatic modes, Drive and Sport. The former allows the engine to operate at a lower rpm, for relaxed driving or in situations where reducing load on the drivetrain results in smoother driving over rough terrain, and the latter holds gears longer, shifting up or down at higher rpm for more aggressive driving. There’s also a Manual mode that gives the driver full control over the transmission, enabling him or her to change gears up or down via a pair of easily reachable, steering-wheel-mounted paddles, for heads-up driving. Even when driving in either of the two automatic modes, the system can be overridden via use of these paddles, with the transmission returning to automatic mode several seconds after each shift.
The Talon’s DCT has high oil flow to the clutch to minimize heat, and the dash has a clutch-temperature indicator. The Talon also has a sub-transmission that provides high and low transmission ranges, effectively doubling the number of gears. During acceleration, the Talon’s DCT provides the visceral and audible thrill of running through the gears with a sport-oriented feel and sound, no matter the selected mode. In addition, the Ignition Feedback Control system allows for quick torque reduction during shifting, for fast, precise gear changes.
Even the reverse gear has been optimized for Sport use for easily exiting from tight situations.
For the meat of the info skip to the 2:00 mark.