Angle Adjustment; Reel Speed - MacDon D65 Operator's Manual

Flatter header angles are recommended for normal crop
conditions and for stony ground because they minimize
knife section breakage and reduce soil scooping or build-up
at the cutterbar in wet conditions.
Steeper angles are recommended in downed crops for
better lifting action, or for cutting close to the ground in hay
for example.
Refer to Section 4.6.1 Header Settings, page 46
recommended header angle in specific crops and
crop conditions.
Header angle also affects the type of windrow that is laid.
Refer to Section 4.10 Windrow Types, page
Choose an angle that maximizes performance for your
crop and field conditions. The table below summarizes the
adjustment range:
Table 4.3 D65 Header Angle
Header size
15–25 ft.
30–40 ft.

Angle Adjustment

Header angle is varied by adjusting the length of the top center-link (mechanical or hydraulic) between the windrower
and the header.
Refer to your windrower operator's manual for adjustment details.

4.7.4 Reel Speed

Reel speed affects feeding of crop into the knife and onto the drapers, as well as the smoothness and evenness
of the delivered crop. Operating the reel too fast or too slow relative to ground speed will cause bunching. At the
proper speed, the reel discs should appear to be being driven by the ground.
• If they look like they are skidding relative to ground, the reel is turning too slow.
• If they look like they are spinning excessively relative to the ground, reel speed may be too fast.
In standing crop, reel speed should be just faster than or equal to ground speed, sweeping crop across the knife.
Flattened crop or a crop that is leaning away from the cutterbar requires a higher reel speed in relation to ground
speed. This can be achieved by increasing reel speed, decreasing ground speed, or both.
Excessive shattering of grain heads or crop loss over the header backtube may be indications that reel speed is too
fast. Excessive reel speed causes undue wear of reel components and unnecessary load on reel drive, resulting in
uneven reel motion.
Generally, a 9-bat reels can effectively operate at lower reel speed, while minimizing crop loss in shatter prone crops.
NOTE: 9-bat reels are available on D65 15, 20, 25 ft. from the factory. If you have a D65 15, 20, 25, 30,
or 35 ft. double reel header. You can purchase conversion kits to upgrade a 6-bat reel to the 9-bat
reel.
169594
OPERATION
for
79.
Guard angle
7.5°–17°
2.5°–12°
57
Figure 4.30: Longest center-link
Rev. C