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HomeAircraftHelicopterHelicopter Main Discussion › HeliCommand HC3-SX during pirouette helicopter not leveled
05-31-2012 09:43 PM  6 years agoPost 1
uglyrider0078

rrApprentice

Natick, MA

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has anyone experience this? better yet knows how to fixed this problem the HC flies fine, i did have to had trim to the collective servos in order to get 90degre on the servos i'm mentioning this because i don't know if this will help someone helping me fix the problem it's being used in an MA-1005 servos bls253/bls251 Jewel generation G1 with futaba s-bus.
during pirouetting the heli leans to different sides and especialy the tail doesn't stay straight.

Team Miniature Aircraft

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06-01-2012 04:34 AM  6 years agoPost 2
Tyler

rrElite Veteran

Chicagoland area

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check the cg. sounds tail heavy.

Otherwise, could be other mechanical issues. I have chased my tail on a few models and found these problems as examples:

Upper Jesus bolt was stripped. Head could not be properly clamped onto mains shaft, although it appeared tight on the bench. In flight, the head could move, thus constantly changing disk angles, phasing, pitch ranges in flight as head loading changed.

Generator coupler causing enough vibrations to make the gyro unhappy and inconsistant.

Loose ball link into the main blade grip.

FBL pushrods too thin/soft.

FBL ball links not screwed onto threaded pushrods enough. This allowed the links to flex on the end of the rods too much.

Loose main shaft bearing blocks.

Just to name a few.

Enjoy things that money can buy IF you don't lose the things money can't buy.

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HomeAircraftHelicopterHelicopter Main Discussion › HeliCommand HC3-SX during pirouette helicopter not leveled
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