MacDon D50 - Page 65

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Figure 3.35: 10.7 m (35 ft.) Single- and Double-Knife Headers
Example: Cutting flax at 8.0 km/hr (5.0 mph) with a single-knife header, use a knife speed between 600 and 650 rpm (1200
and 1300 spm).
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Figure 3.36: 12.2 m (40 ft.) Single- and Double-Knife Headers
Example: Cutting flax at 13.7 km/hr (8.5 mph) with a single-knife header, use a knife speed between 595 and 645 rpm
(1190 and 1290 spm).
NOTE:
This is close to the maximum knife speed for a 12.2 m (40 ft.) single-knife header, which may result in ragged cutting.
Double-knife headers allow higher knife speeds and clean cutting.
OPERATION