Massey Ferguson is to equip its MF 5S series tractors with continuous variable transmission.
Its MF 5S Dyna-VT models complement existing Dyna-4 and Dyna-6 versions and have been added to meet growing demand for extra versatility and comfort from farmers, says the company.
“Our MF 5S series models have a strong reputation as the loader tractors, but their capability, flexibility and high specification mean they are increasingly selected for grassland and arable field tasks too,” explains MF’s Jérôme Aubrion. “The new Dyna-VT transmission option adds even greater appeal to this successful series, and the extra comfort, efficiency and ease of use will be welcomed.
Dyna-VT transmission has a single range of gears and allows stepless adjustment of travel speeds from 0.1 to 40kph. Speed control is by the accelerator pedal, hand throttle lever or the Power Control lever, and the maximum 40kph can be achieved with the engine operating at a low and economical 1,550rpm.
Two virtual speed ranges can be saved and selected. Different start-off speeds for forward and reverse can be set, as well as two cruise control speeds in each mode.
Parklock automatically applies the parking brake through the Power Control shuttle lever.
In fully automatic mode, the operator simply selects the travel speed by depressing the foot pedal. The tractor’s management system selects the most efficient engine revs and transmission drive ratio for the selected speed and conditions, and these are constantly optimised as the working load alters.
When working with PTO or hydraulic-driven implements, the required engine speed can be set and stored in the A and B engine speed memories while the operator adjusts the travel speed independently.
Virtual speed ranges allow even finer control, the operator can create bespoke virtual ranges between any minimum and maximum speeds for a particular application.
For tasks requiring frequent travel direction changes, the drive engagement rate can be set to suit the conditions.
Automatic working modes ensure the engine and transmission operate together at maximum efficiency, while more advanced settings enable professional operators to prioritise extra fuel economy or achieve even higher work rates.
