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M2(W) / M3(W) / M6W
31
The HEADLAND pattern FROM BORDER will only to a limited degree
be changed when changing the PTO rpms.
Examples of HEADLAND spread pattern, FROM BORDER.
The HEADLAND spreading system FROM BORDER, is developed for spread
widths from 12 – 28 metres. In case spread widths larger than 28 metres are
required – it will not be suitable to use this system – the system TO BORDER must
be used.
The HEADLAND spreading system FROM BORDER, is developed so that the
PTO– speed is reduced in comparison to the spread width.
•
The ”power surplus” of the spreader means that the spread pattern overlaps
the tramlines closest to the tramline in which the spreading is made. This
means that fertiliser from 2
nd
tramline will be thrown outside the border –
unless the
PTO speed is reduced in 2
nd
tramline. The reduction
corresponds to the PTO- speed FROM BORDER (See chart).
SPREAD WIDTH
[Metres]
PTO- speed
FROM BORDER
PTO- speed
2
nd
tramline
PTO- speed
Rest
12
metres
350
rpm.
350
rpm.
540
rpm.
15-16
metres
400
rpm.
400
rpm.
18
metres
450
rpm.
450
rpm.
21
metres
500
rpm.
450
rpm.
24
metres
540
rpm.
540
rpm.
28
metres
540
rpm.
540
rpm
Spread width
: 18
metres
NORMAL rate
: 250
Kg/Ha
HEADLAND rate
: 250
Kg/Ha
PTO speed
:
450
rpm.
Forward speed
: 8,0
Km/h
PTO
450 rpm.
HEADLAND- result:
•
Full quantity achieved app.
0,5 meter into the field.
•
Approx. 0,5 meter is spread
outside border.
From the pattern it must be considered that the full quantity is not spread absolutely
out to the border but that the fertiliser quantity is increasing from 0% in border and
up to 100% approx. 0,5 – 1 metre into the field. This depends on how close the
tractor is driven to the border.
The closer to the border – the closer the full rate to border.
0
5
10
15
20
25
30
35
40
-6 -3
0
3
6
9
12 15 18 21 24 27 30 33 36 39 42 45 48 51 54 57 60 63 66 69 72 75
Gødningsgrænse
Sum curve
Sum kurve
1 st. Tramline
1. Kørespor
2 nd. Tramline
2. Kørespor
3 rd. Tramline
3. Kørespor
Tramlines
Kørespor
HEADLAND, FROM BORDER
2
nd
tramline, reduced PTO.