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Old Jan 04, 2013, 07:13 PM
Registered User
United States, FL, St Johns
Joined Jan 2012
23 Posts
Help!
How much does the feathering shaft need to be bent to necessitate replacement?

I am checking my Blade 450 for damage after a crash. When I checked the feathering shaft/spindle, it was moving a minute little bit. How much movement should it be before I replace it?
Thanks for your help!
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Last edited by B450guy; Jan 04, 2013 at 07:46 PM.
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Old Jan 04, 2013, 08:20 PM
Registered User
Philippines, Calabarzon, San Pedro
Joined Jul 2012
4,267 Posts
Considering how much vibration you get from the pitch linkage being so much as half a twist off, i'd say, not a lot. The slightest movement would translate to big ones as it travels down the length of the blade.
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Old Jan 04, 2013, 08:42 PM
Yes, I know it's upside down.
Sydney, Australia
Joined Dec 2008
3,309 Posts
They are so cheap, and replacement is a 5 minute job, so I always replace mine when they are bent. If it is bent only a very slight amount, I might keep flying on the day, but will always replace it when I get home. I like to have my heli's flying silky smooth. No matter how little it is bent, I am always pleasantly surpised how much better it flies with the new one.
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Old Jan 04, 2013, 09:36 PM
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Australia, VIC
Joined Dec 2011
1,107 Posts
Not much , once you detect a variance [ bend in the shaft ] replace it ..

If the feathering shaft moves a lot , it can change pitch on you and put out your blade tracking .

????? $1 to fix ?????
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Old Jan 05, 2013, 09:08 AM
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United States, FL, St Johns
Joined Jan 2012
23 Posts
OK. Thanks guys!
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Old Jan 05, 2013, 10:25 AM
Registered User
United States, MO, Springfield
Joined Jul 2010
3,496 Posts
if it doesnt roll smoothly on a flat glass surface replace it
same test for the main shaft
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