MacDon R85 Rotary Disc 13 Foot - Manual (Page 60)

OPERATION
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58
Revision C
6.12.8 Ground Speed
CAUTION
Reduce speed when turning, crossing
slopes, or when travelling over rough
ground.
a. Choose a ground speed that allows the cutterbar
and conditioner to cut the crop smoothly and
evenly. Try different combinations of mower
conditioner speed and ground speed to suit your
specific crop. Refer to your Tractor Operator’s
Manual for changing ground speed.
b. In tough cutting conditions (such as native
grasses) the disc speed will need to be at
maximum.
c. In light crops the mower conditioner speed can
be reduced while maintaining ground speed.
NOTE
Operating the header at the minimum disc
speed will extend the wear life of cutting
components.
d. The chart below indicates the relationship
between ground speed and area cut for a 13 FT
header.
Example: At ground speed of 13 mph (21 km/h),
the area cut would be approximately 20 acres
(8 hectares) per hour.
0
5
10
15
20
25
30
35
1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16
miles/hour
a
c
re
s
/hour
0
2
4
6
8
10
12
14
1.6 3.2 4.8 6.4 8.0 9.7 11.3 12.9 14.5 16.1 17.7 19.3 20.9 22.5 24.1 25.7
kilometers/hour
h
ect
a
res/
h
o
u
r