Fairway Terminology InfoGuide
Backlapping or Lapping—
A method to simultaneously sharpen the cutting edges of the reel blades and bedknife.
Backlapping is done by reversing the rotation of the reel from the normal mowing
direction. A abrasive paste (slurry) is applied the to the rotating reel blades with a long
handled brush to aid in the sharpening process. There are different grit pastes and grades
depending on need.
Bedbar —
The supporting structure to which the bedknife is attached.
Bedknife Attitude
The angle between the bottom
of the bedknife and the ground
plane under the cutting unit. As
the bedknife attitude is changed,
it is important that the reel to
bedknife shear point changes
Shear Point
relative to the center line of the
reel. This can change the after cut
appearance of the grass. The
result may be better or worse
depending on several factors.
Attitude
Bedknife attitude is adjusted by
changing the height of the front, rear, or both rollers. A height of cut change is NOT
necessarily part of a change to the bedknife attitude. A large angle is also referred to as
an aggressive bedknife attitude. A small angle (flat attitude) can have most or all of the
bedknife riding ON the turf. This can influence after cut appearance.
Bedknife —
The lower cutting member on a
reel type mower. The bedknife is
attached to the bedbar, and the
assembly is mounted to the main
frame in one of two ways. One
allows for paralleling and
adjusting the bedbar (bedknife) up
to the reel, while in others the
bedbar is fixed and the paralleling
and adjustment are made by
moving the reel.
bedknife
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