OLIMAC Drago GT User And Maintenance Manual page 39

Section 5 – Operation
Stalk Chopper
The optional stalk chopper is responsible for additional sizing of residue as it exits the bottom of the corn head.
The Drago GT corn head can be equipped with three different stalk chopping options to suit different farming
practices. The non-chopping option will leave the longest stalks and the largest material sizing, while the Twin
Chop+ offers the shortest stalks and smallest material sizing. Both the single chopping gearbox and the Twin
Chop+ can be added at any time to a non-chopping head. Inversely both the single chopping gearbox and the
Twin Chop+ can be removed at any time by adding the non-chopping block off plate.
Option 1 – Non Chopping (Standard)
The base Drago GT corn head is available as a non-chopping
corn head. A block off plate (F) is installed in place of the
chopping gearbox. This relies solely upon the stalk roller
knives to break up residue, and will typically leave standing
corn stalks approximately 12" (300mm) tall, depending on
operating height.
Option 2 – Single Chopper
The single chopping option incorporates a single gearbox (G)
under each row of the corn head with a single rotating block
with two knives. The corn stalks are first pulled through the
stalk rollers, then the material is additionally chopped by the
rotating chopping knives. The rotating chopping knives also
cut the standing corn stalks left by the stalk rollers to the
same height, depending on operating height. The single
chopper is also equipped with a shut off feature (H) that
allows individual rows to be disengaged.
Option 3 – Twin Chop+
The Twin Chop+ chopping option incorporates a single
gearbox (I) under each row of the corn head with two co-
rotating blocks, each with two knives. The corn stalks are first
pulled through the stalk rollers, then the material is
additionally chopped by the co-rotating chopping knives. The
forward mounted chopping block (J) rotates at a faster speed
as compared to the rear chopping block (K). This creates a
counter cutting action on the corn stalk. This chopping option
also cuts the standing corn stalks left by the stalk rollers to
the same height, depending on operating height, but provides
smaller material sizing. The Twin Chop+ is not equipped with
a shut off feature.
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