Just looking at an engine’s horsepower isn’t enough.
You have to see how much power is delivered to the ground.
With a hydrostat, PTG is complex and inefficient:
- Hydraulic pump (about 2% hp loss occurs here)
- – 8. Hydraulic block, plus each hydraulic union and fitting is a point where hydraulic pressure can be lost. Loss of pressure means loss of power (about 8% hp loss occurs here)
- Hydraulic wheel motors (about 5% hp loss at each wheel motor)
So hydrostatic sprayers need more horsepower to:
Lug around 3,000 to 9,500 pounds extra weight, including four hydrostatic wheel motors and pumps.
Compensate for their wasted power; 25-40% of the horsepower is lost before it even hits the ground.
Competitor Undercarriage Photo View Apache Undercarriage