MacDon FD75 OM - Manual (Page 162)

OPERATION
Figure 4.221: Ground Speed vs Acres
A - 30 ft. B - 35 ft. C - 40 ft.
Example shown above: At a ground speed of 6 miles per hour (9.7 km/h) with a 40 ft. header, the area cut in one
hour would be approximately 28 acres (11.3 hectares).
4.7.7 Draper Speed
Adjusting Side Draper Speed
The side drapers carry the cut crop to the adapter feed draper which then feeds it into the combine. The speed is
adjustable to suit crops and crop conditions.
The side drapers (A) are driven by hydraulic motors from a
pump which is powered by the combine feeder house drive
through a gearbox on the adapter. A flow control valve on
the adapter regulates the flow to the draper motors to set
the speed.
Figure 4.222: Side Drapers
169894 148 Revision A