MacDon D50 - Draper Speed; Knife Speed; Knife Speed Recommendations

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3.12.6 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.
3.12.7 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 for more information.
Table 3.5 Knife Speed Guidelines
Recommended Knife Speed Range (spm)
Header Size
Single Knife Double Knife
4.6 m (15 ft.)
—
1500–1900
6.1 and 7.6 m (20 and 25 ft.)
1200–1400 1400–1700
9.1 m (30 ft.)
1200–1400 1200–1600
10.7 m (35 ft.)
1100–1300 1200–1400
12.2 m (40 ft.)
1050–1200 1100–1400
Knife Speed Recommendations
Refer to the following charts for guidelines on the recommended knife speeds for particular crops. Separate charts are
provided for single- and double-knife headers of different sizes.
ϭϬϰϬϭϭϰ
Figure 3.32: 4.6 m (15 ft.) Double-Knife Headers
Example: Cutting forage at 8.0 km/hr (5.0 mph), use a knife speed between 850 and 900 rpm (1700 and 1800 spm).
OPERATION