MacDon FlexDraper FD1 Series, Operator'S Manual, Page: 38 / 510

PRODUCT OVERVIEW
Cutterbar
Effective cutting width (distance between crop divider points)
30-foot header 30 foot (360 in. [914.4 cm]) S
35-foot header 35 foot (420 in. [1066.8 cm]) S
40-foot header 40 foot (480 in. [1219.2 cm]) S
45-foot header 45 foot (540 in. [1371.6 cm]) S
Cutterbar lift range Varies with combine model S
Knife
Single-knife drive (all sizes): hydraulic motor to C-belt to enclosed heavy duty (MD) knife drive box. O
F
Double knife drive (35-foot and smaller): hydraulic motor to two B-belts to enclosed heavy duty
(MD) knife drive boxes.
O
F
Double knife drive (40- and 45-foot): two hydraulic motors to C-belts, untimed, to enclosed heavy
duty (MD) knife drive boxes.
O
F
Knife stroke 3 in. (76 mm) S
30 foot 1200–1400 spm S
35 foot 1100–1300 spm S Single-knife speed (strokes per minute)
1
40 foot 1050–1200 spm S
Double-knife speed (strokes per minute) 1 40, 45 foot 1100–1400 spm S
Knife Sections
Over-serrated / solid / bolted / 9 serrations per inch S
Knife overlap at center (double-knife headers) 1/8 in. (3 mm) S
Guards and Hold-Downs
Guard: pointed / forged / double heat treated (DHT)
Hold-down: sheet metal / adjustment bolt
S
Guard Angle (Cutterbar on Ground)
Center-link retracted 2.0 Degrees S
Center-link extended 7.4 Degrees S
1. Under normal cutting conditions, knife speed taken at the knife drive pulley should be set between 600 and
640 rpm (1200 and 1280 spm). If set to low side of chart, you could experience knife stalling.
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Revision A