The
Manumatic and
Newtondrive systems are also known as "two-pedal transmissions". They relieve the driver of the need for skill in operating clutch and engine speed in conjunction with the gear change. At one time,
Manumatic solely referred to an older type of
semi-automatic transmission with an automatic clutch system, but today, the term "manumatic" generally just refers to standard
torque converter automatic transmissions, with the ability to override the transmission computer, and select gears "manually," via the electronics. ;Manumatic A clutch servo powered by the vacuum at the induction manifold operated the automatic clutch - a conventional clutch incorporating centrifugal operation. A switch in the gear lever operated a solenoid valve so that when the gear lever moved, the clutch was disengaged. A control unit made throttle adjustments to keep the engine speed matched to the driven clutch plate and also varied the speed of clutch operation appropriate to road speed. ;Newtondrive The Newtondrive system differed in making a provision for choke control and a cable linkage from the clutch operating mechanism to the throttle. The systems could be fitted to smaller cars such as the
Ford Anglia. ==References==