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Home✈️Aircraft🚁Helicoptere-AlignT-REX 450 › 450 Dominator
12-12-2013 07:24 PM  5 years ago
Topic Vote0Post 1
nick.gruber

rrApprentice

Lincoln, NE

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450 Dominator
I have a freshly built 450 Dominator that vibrates on the skids for a few seconds on spin down. When I bring the throttle to idle and allow the blades to wind down the helicopter has a shake that occurs at the same time every time. Blades unbalanced?
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12-12-2013 07:34 PM  5 years ago
wrongler

rrProfessor

Brewerton, New York

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Do you hit throttle hold or just pull the collective back for landing and spooling down?Bill Whittaker
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12-12-2013 07:48 PM  5 years ago
nick.gruber

rrApprentice

Lincoln, NE

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Ive tried both but normal and hold are set with the same pitch parameters so pitch isnt changing.
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12-13-2013 01:26 PM  5 years ago
Richardmid1

rrProfessor

Leeds, England

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Blades too tight in the grips?60% of the time, it works every time!
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12-13-2013 05:09 PM  5 years ago
soulrider911

rrVeteran

Novato Ca

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Check the motor lashing could be to tight,Why don't cats get gray hair with age?.....
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12-13-2013 09:23 PM  5 years ago
Toadster25

rrKey Veteran

Iowa

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Could a swash not perfectly level cause this? If the blades are trying to tilt the heli one way or another and they are fighting the skids being on the ground I would think this could cause a shake. Maybe if you haven't made sure the blades are in track that might cause something.
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12-14-2013 02:10 PM  5 years ago
S76 Mech

rrElite Veteran

Hatboro, Pa.

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mine does the same thing, cant figure it out either....

http://www.helifreak.com/showthread.php?t=582320
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