Jeffersonville, OH | john holland - 1/22/2026 17:58
That sounds like a last minute shoe horn job. Using an engine to drive a pump to drive a motor to drive a pump to drive a motor. No wonder it is short on power. If you figure 0.9 efficiency for each of the extra pump and motor, you are losing 20% of the power used for traction drive right off the bat.
The Traction drive setup is the same as the old setup, the only new addition is a small hydraulic drive motor to run the lubrication system of the new transmission. The old transmission only oiled if you were moving, and only in FORWARD. The new system oils all the time, and also supplies the oil for the diff lock, shift, and power boosted brakes.
The difference in drive power, from my understanding, is because the system is that much heavier and has more parasitic drag, with some possible software changes needed on the drive system and cruise control logic. The additional hydraulic requirements are minimal, a few GPM.
We still take much less HP to move our combine through the field than any other color combine...
Chris |
Gleaner Combines
