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Optional Reel Drive Sprockets
Optional reel drive sprockets for use in special crop conditions are available as an alternative to the
factory-installed sprocket.
The header is factory-equipped with a 19-tooth sprocket that drives the reel and it is suitable for most crop conditions.
Other sprockets are available that provide more torque to the reel in heavy cutting conditions or allow for higher reel
speeds in light crops when operating at increased ground speeds. See your MacDon Dealer for ordering information.
For installation details, refer to
5.9.3 Reel Drive Sprocket, page 203
.
3.7.5
Ground Speed
Operating at the proper ground speed will result in cleanly cut crops and evenly distributed material in uniform
windrows.
Refer to
for effects of ground speed on windrow formation.
Reduce ground speed in dif
fi
cult cutting conditions to reduce loads on cutting components and drives.
Use lower ground speeds in very light crops (e.g., short soybeans) to allow the reel to pull in short plants. Start at
4.8–5.8 km/h (3.0–3.5 mph) and adjust as required.
Higher ground speeds may require heavier
fl
oat settings to prevent excessive bouncing that causes uneven cutting
and possible damage to the cutting components. Increase ground pressure
fi
rst before increasing the
fl
oat. If ground
speed is increased, draper and reel speeds should generally be increased to handle the extra material.
Figure
3.28: Ground Speed vs Acres, page 52
illustrates the relationship between ground speed and area cut for
the various sized headers.
214044
51
Revision A