Draper Speed; Knife Speed - MacDon D65 Operator's Manual

Figure 3.29: Ground Speed vs Acres
A - 15 Foot
D - 30 Foot
G - acres/hour
K - kilometers/hour
Example: A 25-foot header operating at a ground speed of 6 mph (9.7 km/h) would produce a cut area of
approximately 18 acres (7.3 hectares) in one hour.

3.7.6 Draper Speed

Correct draper speed is an important factor for achieving good flow of the cut crop away from the cutterbar.
The draper speed is controlled with the windrower cab display module (CDM). Refer to your windrower operator's
manual for instructions.
Adjust the draper speed to achieve good feeding of crop for a good windrow. Excessive draper speed will reduce
draper life.

3.7.7 Knife Speed

The header knife drive is driven by the windrower hydraulic pump and is controlled with the windrower cab display
module (CDM). The default speed is 1200 strokes per minute (spm). Refer to your windrower operator's manual.
Table 3.5 Knife Speed Guidelines
Header Size (ft.)
15 ft.
20, 25 ft.
147725
OPERATION
B - 20 Foot
E - 35 Foot
H - miles/hour
Recommended Knife Speed Range (spm)
Single Knife
—
1200–1400
57
C - 25 Foot
F - 40 Foot
J - hectares per hour
Double Knife
1500–1900
1400–1700
Revision A