MacDon D65 SP DHOM - Manual (Page 69)

OPERATION
4.7.5 Ground Speed
Using the proper ground speed will result in cleanly cut crop and even delivery of material for a good windrow.
Refer to 4.10 Windrow Types, page 79 for effects of ground speed on windrow formation.
Reduce ground speed in difficult cutting conditions to reduce loads on cutting components and drives.
Use lower ground speeds in very light crops (for example, short soybeans), to allow the reel to pull in short plants.
Start at 3.0–3.5 mph (4.8–5.8 km/h) and adjust as required.
Higher ground speeds may require heavier float settings to prevent abnormal bouncing that would cause uneven
cutting and possible cutting component damage. Generally, if ground speed is increased, draper and reel speeds
should be increased to handle the extra material.
The following chart indicates the relationship between ground speed and area cut for the various header sizes.
Figure 4.30: Ground Speed vs Acres
A - 15 Foot B - 20 Foot C - 25 Foot
D - 30 Foot E - 35 Foot F - 40 Foot
Example shown above: At a ground speed of 6 miles per hour (9.7 km/h) with a 25 ft. header, the area cut in one
hour would be approximately 18 acres (7.3 hectares).
4.7.6 Draper Speed
The draper speed is controlled with the windrower Cab Display Module (CDM). Refer to your windrower operator’s
manual for instructions.
Adjust the draper speed to achieve good feeding of crop for a good windrow. Excessive draper speed will reduce
draper life.
169899 57 Revision A