Optional Reel Drive Sprockets; Ground Speed - MacDon D65 Operator's Manual

OPERATION
Refer to Section 4.6.1 Header Settings, page 46 for recommended reel speeds in specific crops and crop conditions.
The reel speed is adjustable with the controls in the windrower cab. Refer to your windrower operator's manual for
adjustment details.

Optional Reel Drive Sprockets

For installation details, refer to Section 6.8.5 Reel Drive Sprocket, page 211.

4.7.5 Ground Speed

Ground speed should be such that the knife can cut crop smoothly and cleanly, while giving the desired delivery of
material to the opening. Excessive ground speed results in ragged cutting.
Refer to Section 4.10 Windrow Types, page 79 for effects of ground speed on windrow formation.
In tough-to-cut crops, reduce ground speed to reduce loads on cutting components and drives.
When cutting very light crops (for example, short soybeans), ground speed may have to be reduced to allow reel to
pull in small and short plants. Start at 3.0–3.5 mph (4.8–5.8 km/h) and adjust as required.
Higher ground speeds require heavier float settings to prevent excessive bouncing that would result in increased
cutting component damage. In most cases, as ground speed is increased, draper and reel speed should be increased
to handle the extra material.
The chart indicates the relationship between ground speed and area cut for the various header sizes.
Figure 4.31: D65 ground speed
Example shown above: At a ground speed of 6 miles per hour (9.7 km/h) with a 25 ft. header, the area cut in one
hour would be approximately 18 acres (7.3 hectares).
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