Cablr Systems Flashcards
What is yoarder?
Cable logging machine repurposed from something else usually a hydraulic system because these motors are easier to work with
Tower
Pro: high clearance at landing
-low capitol cost
Con
- can NOT swing logs
-even small moves require dropping tower
-needs more guylines
Swing yarder
Pro
-can swing and deck wood
-fewer guylines
-Can move with pipe up
Con
-may have to lowbed in pieces if using public roads
Swedge cable
Pro
Resists abrasion
More line on drum
Con
More rigid less flexible
Need flexibility for chokers
Yoarder
Pro
Can swing and deck wood
Can move with tower up
Some operations like hydraulic winches and two drums
Con
Hydraulic winches are slower
High lead
Pro
- haulback is separated from mainline so less sensitive to ground lead
- has ground lead
Cons
-butt rigging has less lift and control
-ground lead has big issues with damage and breakage
Running skyline
Pro
-more lift and control
-can downhill yard because it has HB
Con
-haulback can be damaged if ground lead
-more line wear
Running skyling HB
HAS TO HAVE A BREAK ON HB TO GET TENSION
Standing skyline
Pro
-most control and lift
-can use a motorized carriage with drop to lateral yard
-less line wear
Con
-to work well requires motorized carriage
-requires larger rigging crew
Standing rigging , standing skyline
DOES NOT CHANGE LENGTH WHEN YARDING
What’s feeds a shotgun carriage
Gravity fed
Haulback carriage
Haulback carriage has to be hauled back out
What drives drums?
Clutch
Why do you needs breaks on SL
ML breaks stop carriage. SL clamps stop carriage from creeping foward when slack line is being tugged on
When pulling hard
Everyone stands clear
