Deflection

Question 1

What are the respective heights of high lead towers vs grapple yarders

Answer 1

27.4m for highlead

15m for grapple yarder with 5m mobile tailspar.

Question 2

What’s the point of a D line?

Answer 2

To locate a feasible falling boundary.

Question 3

What’s the difference between an interlocking and a non interlocking machine?

Answer 3

Load path will vary greatly since grapple yarder can use interlocking drums to increase tension and generate more lift.

Question 4

What’s a standard rule for line distance on a highlead machine (27m)?

Answer 4

Past 3x height there will no more log lift.