215651
65
Revision B
The reel speed is adjustable using the controls in the windrower cab. Refer to the windrower operator
’
s manual for
adjustment details.
Optional Reel Drive Sprockets
Optional reel drive sprockets for use in special crop conditions are available as an alternative to the factory-installed
sprocket.
The header is factory-equipped with a 19-tooth sprocket that drives the reel and it is suitable for most crop conditions.
Other sprockets are available that provide more torque to the reel in heavy cutting conditions or that allow for higher reel
speeds in light crops when operating at increased ground speeds. See your MacDon Dealer for ordering information.
For installation details, refer to
5.9.3 Reel Drive Sprocket, page 229
3.7.5
Ground Speed
Operating at the proper ground speed will cleanly cut crop and evenly distribute crop material in uniform windrows.
For effects of ground speed on windrow formation, refer to
.
Reduce ground speed in difficult cutting conditions to reduce loads on cutting components and drives.
Use lower ground speeds in very light crops (e.g., short soybeans) to allow the reel to pull in short plants. Start at
4.8
–
5.8 km/h (3.0
–
3.5 mph) and adjust as required.
Higher ground speeds may require heavier float settings to prevent excessive bouncing that causes uneven cutting and
possible damage to the cutting components. If ground speed is increased, draper and reel speeds should generally be
increased to handle the extra material.
Figure
illustrates the relationship between ground speed and area cut for the various sized headers.
$
%
&
'
(
)
*
+
-
.
Figure 3.31: Ground Speed versus Acres
A - 4.6 m (15 ft.)
B - 6.1 m (20 ft.)
C - 7.6 m (25 ft.)
D - 9.1 m (30 ft.)
E - 10.7 m (35 ft.)
F - 12.2 m (40 ft.)
G - acres/hour
H - miles/hour
J - hectares per hour
K - kilometers/hour
