For this application, Magic Circle wanted to achieve a ground speed
of about 8 mph using a 20 to 27 hp motor at 3600 rpm, 23- to 24-in.
The platform's hydraulic float system kept the cutting bar at a consistent height and that, along with the smoother feeding of the crop material, let us run at faster ground speeds.
This is especially valuable when running 8- or 12-row cornheads at higher ground speeds.
This facilitates higher ground speeds compared to conventional mechanical float systems.
Also, an additional power burst has been designed in, allowing operators to maintain critical ground speed and threshing capacity when unloading on the go.
These limitations include wind effects and the challenge of rapidly changing application rates at aircraft ground speeds that customarily approach 65 m/s.
Although the Garmin GPS receiver (designed for ground use) led by a smaller amount, it exhibited a linear response with ground speed.
The "Other Roads" course also includes cornering at ground speeds
at gravel surfaces and ground clearance limits.
The electronically controlled hydrostatic transmission features cruise control that can maintain constant ground speeds
as low as 0.
When coupled with the Challenger electronic engine management system, this stepless transmission provides the operator with a virtually unlimited combination of engine speeds and ground speeds
from 60 feet per hour to 25 mph.
The John Deere 615P Belt Pick Up Platform allows small grain producers to harvest bigger windrows at faster ground speeds
with fewer losses.
The higher pump speed allows the use of a lower gear ratio planetary for better torque in low range, as well as faster ground speeds
in both low and high ranges.