Jabiru J170 elevator control

[foxdog]

Hi Guys,
I have a J170 that has developed stiff elevator free movement.
Is this cable lubrication or to do with trim connection.
If it is lubrication how would one go about it.
Regards Foxdog

[Flooi]

Service bltn

JSB041-1-Jabiru_-Elevator-Cable.pdf

[foxdog]

Thanks flooi you were quick

[happyskipper]

Sorry for the drift, can anyone explain to me how the elevator trim works in the Jab?
I only have 5 hours in the Jab from 2 years ago, and I was told that the trim works by applying spring or bungee pressure to the elevator cable..... Is this true?

[Steve]

Yes, is uses a spring offset trim system. The Trim offset can be adjusted as illustrated below:-

trim.png

The illustration below shows how the offset pressure is achieved

trim4.png

trim2.png

trim3.png

[happyskipper]

Brilliant explanation - thank you Steve.