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

Figure 3.29: Ground Speed vs Acres
G
A - 4.6 m (15 ft.)
D - 9.1 m (30 ft.)
G - acres/hour
K - kilometers/hour
Example: A 7.6 m (25 ft.) header operating at a ground speed of 9.7 km/h (6 mph) would produce a cut area of
approximately 7.3 hectares (18 acres) in one hour.

3.7.8 Draper Speed

Correct draper speed is important for achieving a good flow of 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 draper speed to optimize crop feeding for a well formed windrow. Excessive draper speed will reduce draper life.

3.7.9 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 for more information.
Table 3.5 Knife Speed Guidelines
Header Size
4.6 m (15 ft.)
6.1 – 7.6 m (20–25 ft.)
9.1 m (30 ft.)
214327
OPERATION
K
H
B - 6.1 m (20 ft.)
E - 10.7 m (35 ft.)
H - miles/hour
Recommended Knife Speed Range (spm)
Single Knife
—
1200–1400
1200–1400
59
F
E
D
C
B
A
C - 7.6 m (25 ft.)
F - 12.2 m (40 ft.)
J - hectares/hour
Double Knife
1500–1900
1400–1700
1200–1600
J
Revision B