Draper Speed. MacDon D50 & D60

SECTION 7. OPERATION

a. The draper speed is controlled with the windrower

CDM (Cab Display Module). Refer to your Self-

Propelled Windrower Operator’s Manual. b. Adjust draper speed to achieve good feeding of crop onto adapter draper. Excessive draper speed will reduce draper life.

NOTE

If sufficient draper speed cannot be achieved, a possible cause is low relief pressure. Refer to the Technical

Service Manual for checking and adjusting relief pressure.

7.12.7.1 Knife Speed Guidelines

Recommended Knife

Speed Range

(RPM)

Header Size

15 FT.

SK

(Single Knife

Header on SP

Windrower)

---

DK

(Double Knife

Header on SP

Windrower)

750 - 950

20 and 25 FT.

30 FT.

35 FT.

600 - 750

600 - 700

550 - 650

700 - 850

600 - 800

600 - 750

40 FT. 525 - 600 550 - 700

The header sickle drive is driven by the windrower hydraulic pump and is controlled with the windrower CDM.

The default speed is 600 revolutions per minute

(rpm). Refer to your Self-Propelled Windrower

Operator’s Manual.

Refer to the following charts for guidelines on the recommended knife speeds to suit a particular crop.

A chart is provided for each header size or range of sizes and whether the header is a single (SK) or double knife (DK) machine.

Refer to examples below each chart.

950

925

900

875

850

825

800

775

750

725

700

1

15 Foot Double Knife

GROUND SPEED (km/hr)

975

1.6

3.2

4.8

6.4

8.0

9.7

11.3

12.9

2 3

14.5

1950

1900

1850

1800

1750

1700

1650

1600

1550

1500

1450

9

1400

15 DK

FORAGE RANGE

GRASS RANGE

4 5 6 7 8

GROUND SPEED (miles/hr)

Example

: Cutting Forage at 5.0 mph (8.0 km/hr)

Use Knife Speed Between 850 - 900 rpm (1700 -

1800 spm).

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875

1.6

850

825

800

775

750

725

700

675

650

625

600

1

3.2

2

4.8

3

SECTION 7. OPERATION

20 and 25 Foot Single and Double Knife

GROUND SPEED (km/hr)

6.4

8.0

9.7

11.3

12.9

4 5 6

GROUND SPEED (miles/hr)

7 8

14.5

1750

1700

1650

1600

1550

1500

1450

1400

1350

1300

1250

1200

9

20-25 FT DRAPER

DK GROUP A RANGE

DK GROUP B RANGE

SK GROUP A RANGE

SK GROUP B RANGE

Group A: Forage/Alfalfa/Flax

Group B: Canola/Cereals/Edible Beans

Example: Cutting Group A Crops at 5.0 mph (8.0 km/hr) With Single Knife

Use Knife Speed Between 710 - 735 rpm (1420 - 1470 spm).

30 Foot Single and Double Knife

675

650

625

600

575

550

1

825

1.6

800

775

750

725

700

3.2

2

4.8

3

GROUND SPEED (km/hr)

6.4

8.0

9.7

11.3

12.9

14.5

1650

1600

1550

1500

1450

1400

1350

1300

1250

1200

30 FT DRAPER

DK GROUP A MAX

DK GROUP A MIN/GROUP B MAX

DK GROUP B MIN

SK GROUP A & B RANGE

1150

4 5 6

GROUND SPEED (miles/hr)

7 8 9

1100

Example: Cutting Group A or B Crops at 5.0 mph (8.0 km/hr) With Double Knife

Use Knife Speed Approximately 680 rpm (1360 spm).

Group A: Forage/Alfalfa/Flax

Group B: Canola/Cereals/Edible Beans

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775

1.6

750

725

700

675

650

625

600

575

550

525

500

1

700

675

650

625

775

1.6

750

725

600

575

550

525

500

1

SECTION 7. OPERATION

35 Foot Single and Double Knife

3.2

2

3.2

2

4.8

3

4.8

3

GROUND SPEED (km/hr)

6.4

8.0

9.7

11.3

12.9

14.5

1550

1500

1450

1400

1350

1300

1250

1200

1150

1100

9

1050

1000

35 FT DRAPER

DK FLAX MAX

DK CEREALS MAX/FLAX MIN

DK CEREALS MIN

SK FLAX MAX

SK CEREAL MAX/FLAX MIN

SK CEREAL MIN

4 5 6

GROUND SPEED (miles/hr)

7 8

Example: Cutting Flax at 5.0 mph (8.0 km/hr) With Single Knife.

Use Knife Speed Between 600 - 650 rpm (1200 - 1300 spm).

40 Foot Single and Double Knife

GROUND SPEED (km/hr)

6.4

8.0

9.7

11.3

12.9

14.5

1550

4 5 6

GROUND SPEED (miles/hr)

7 8

1500

1450

1400

1350

1300

1250

1200

1150

1100

1050

9

1000

40 FT DK DRAPER

DK FLAX RANGE

DK CEREALS RANGE

SK FLAX RANGE

SK CEREAL RANGE

Example:

Cutting Fl ax at 8.5 mph (13.7 km/hr) With Single Knife

Use Knife Speed Between 595 - 645 rpm (1190 - 1290- spm).

NOTE:

Close to maximum Single Knife Speed for 40 ft .which may result in ragged cutting. Double Knife machine allows higher knife speed and clean cutting.

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