7.12 Transmition Flashcards
What are advantages of using chains?
Flexible, positive connections, change direction
Where may chains be found?
Control column installations, aileron and elevator controls, trim control systems
What can chains be used in conjunction with?
Cables
What does a roller chain consist of? (Parts)
Outer and inner plates, rollers, bearing pins, bushes
What are the 3 roller chain principle dimensions?
Pitch, width between inner plates, roller diameter
Describe chain assemblies in terms of lubrication when you buy them
Come pre lubricated and shouldn’t be removed
What should you check for after installing a chain?
Twists and alignment with socket
How do you prevent backlash when installing a chain
Ensure they are not over or under tensioned
How do you prevent a chain from reversing?
Use a non reversible chain
How are non reversible chains different to normal chains?
Every second outer plate is extended to break the symmetry
What are the 4 parts of inspecting a chain?
General, removal, checking articulation, check for deterioration
How do you protect and store a chain?
Soaked and appropriately oiled, time allowed for lubricant to penetrate surface, wrapped in grease proof paper
What is a spur gear?
Most common, teeth perpendicular to face
What is a helical gear?
Teeth at angle to shaft, similar to spur gears
What is a bevel gear?
Transfer power between intersecting shafts and uses for any angle up to 180
