New steering sensor on L-Series II Skidders and Feller Bunchers cushions impact during full articulation, for a more comfortable ride
When running most skidders or feller bunchers, the operator can keep steering until the front frame contacts the rear frame, often resulting in an abrupt, jarring stop. To improve operator comfort, our new L-Series II machines feature a steering sensor that controls the articulation speed to cushion frame-to-frame contact.
The steering sensor is installed at the pivot point of the front and rear frames.
The sensor is calibrated to the exact angle the frames will touch in both directions.
Joystick position controls the steering rate. The more the joystick is moved in one direction, the more current is sent to the steering valve — and the faster the hydraulics steer the machine.
As the frames approach the angle at which they will make contact, the amount of current to the steering valve is automatically reduced, slowing down the hydraulics and steering rate.
The reduction in steering speed depends on machine speed and the steering-aggressiveness setting, among other things. This helps deliver a consistent feel at any speed.
The slower steering rate causes the frames to touch gently to cushion impact and smooth the ride.