MAC215986
156
Revision A
Table 3.19 Optional Sprockets
Sprocket
Machine
Hydraulics
Combine
Application
Optional Drive
Sprocket
Dual reel drive
sprocket (A)
20.68 MPa
(3000 psi)
New Holland CR, CX
Combining down rice
14/20 tooth
Lower sprocket (B)
—
All
Light crops
52 tooth
3.9.7
Ground Speed
Operating the header at the appropriate ground speed for the conditions results in cleanly cut crop and even feeding.
Reduce the vehicle
’
s ground speed in difficult cutting conditions to reduce equipment wear.
Use lower ground speeds when harvesting very light crops (for example, 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 the speed as needed.
Higher ground speeds may require heavier float settings to prevent excessive bouncing, which can result in 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.
1012618
A
B
C
D
E
F
G
H
Figure 3.210: Ground Speed versus Acres
A - Kilometers/Hour
B - Miles/Hour
C - Acres/Hour
D - Hectares/Hour
E - 9.1 m (30 ft.)
F - 10.7 m (35 ft.)
G - 12.2 m (40 ft.)
H - 13.7 m (45 ft.)
Example:
A 12.2 m (40 ft.) header operating at a ground speed of 9.7 km/h (6 mph) would produce a cut area of
approximately 11.3 hectares (28 acres) in one hour.