Prepare - 92 JT100/JT100 All Terrain Operator’s Manual
Plan Bore Path
Entry Pitch
Entry pitch is the slope of the drill frame compared with the slope of the ground. Determine entry pitch one
of two ways:
1. With Pitch Beacon
• Lay pitch beacon on the ground and read
pitch.
• Lay pitch beacon on drill frame and read pitch.
• Subtract ground pitch from drilling unit pitch.
2. With Measurements
• Measure from the ground to front end of drill
frame (H1).
• Measure from the ground to back end of frame
(H2).
• Subtract (H1) from (H2). Record this number.
• Measure the distance between front and back
points (C).
• Divide (H2-H1) by (C), then multiply by 100.
This is your pitch.
IMPORTANT: A shallow entry pitch (A1) allows you
to reach horizontal sooner and with less bending.
Increasing entry pitch (A2) makes bore path longer
and deeper.
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