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HomeAircraftHelicopterHelicopter Main Discussion › When to change links.
09-05-2013 04:41 AM  5 years agoPost 1
7Quick7

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Las Vegas

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Can some one post me some info on when to change out Fbl head links and cyclic servo links. How can one tell when these need to be changed out ?

Written words or even a video if you know of one would be great on the subject. Thanks in advance.

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09-05-2013 04:57 AM  5 years agoPost 2
AWittleWabbit

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O.C., CA

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They are cheap and the cost high for a failure. I replace them as soon as I can feel any radial or axial play between the ball link and ball. The throttle servo would get a smidge more latitude since they have very little load.

Pay special mind to the ones from the swash to any part of the head. They get the most mileage followed by the tail. If they don't snap on the ball crisply, inspect them.

Heli-itis sufferer.

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09-05-2013 05:14 AM  5 years agoPost 3
AWittleWabbit

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O.C., CA

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Your question got me thinking about ball links. They are really mini rod end bearings. You could Google "rod end bearing" or "heim joint". Heim joint is somewhat a misnomer much in a way "NOS" is to N²0. Maybe you can find a inspection tutorial.

Checking for axial and radial play is really it for this size though.

Heli-itis sufferer.

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09-05-2013 06:42 PM  5 years agoPost 4
7Quick7

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Las Vegas

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Thanks W.W...Advice taken.

After some serious web search I found a couple really good videos on subject as well as other factoring info. ..Thanks again

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09-05-2013 09:26 PM  5 years agoPost 5
icanfly

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ontario

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when you can pry them off somewhat easily with your fingers it's a sign they need replacing. New links are a pain to remove with a finger. Usually you'll notice some amount of play first and if they pop off easily by finger it's a good chance they'll pop off in a crash, but rarely in flight.

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