7.13 Flashcards
Whats the two most common control cables made from ?
Carbon steel
Stainless steel - more expensive and has lower tensile strength but longer service life.
What’s the 3 methods of swaging compression fittings onto cable ?
Kearney
Hydraulic press
Nicopress
( manufactured with AN standards )
Explain how the Kearney swagger works ?
Metal of terminal is squeezed engaging terminal onto the cable.
( terminal cannot be separated. )
What’s the maximum diameter of a cable which can have a terminal fitting swaged onto it ?
3/8
What can over swaging cause ?
Work hardening
How much percent is a cable loaded to its breaking strength ?
60 %
What the sleeve used on the nicopress swage fitting made from ?
Copper sleeve
How much cable should be visible beyond the sleeve on a nicopress swaged fitting ?
1/8
How much does a nicopress termination produce of the cable strength ?
100%
What can you apply to the cable after being nicopressed to show if its slipped ?
Paint.
What percentage of wear on the cable will you begin to see the wires blending together ?
40-50%
Why is a fair lead used ?
Use when cable will likely contact the structure
Should a fair lead be used to change direction of a cable ?
No
What are pressure seals filled with to allow cables to run smoothly and not cause a pressurisation leak when running through bulkheads ?
Grease
What stops a cable from jumping out of a pulley
Clevis pin guarded with a split pin.
