MacDon R85 Rotary Disc 13 Foot Pull-Type - Manual (Page 50)

OPERATION
Form 169454
48
Revision A
6.13.8 Ground Speed
CAUTION
Reduce speed when turning, crossing
slopes, or when travelling over rough
ground.
a. Operate the PTO at rated speed.
b. Choose a ground speed that allows the cutterbar
and conditioner to cut the crop smoothly and
evenly. Try different combinations of PTO and
ground speed to suit your specific crop.
c. In tough cutting conditions, such as native
grasses, the PTO speed will need to be
maintained and ground speed decreased.
d. In light crops the PTO can be reduced (reduce
engine rpm) and shifting into a higher gear to
maintain ground speed.
NOTE
Operating the header at the minimum
PTO speed will extend the wear life of
components, and save fuel.
e. 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)
with a 13 FT mower conditioner, 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
he
c
ta
re
s
/hour