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Home✈️Aircraft🚁HelicopterGasser Model RC HelicoptersOther › JR z230 head shake before take off????
04-11-2013 01:32 AM  7 years ago
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bv13

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park city utah

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JR z230 head shake before take off????
Im getting a bad head shake at about half throttle. Smooth spool up, then the wobble starts and disappears at take off. The main shaft and spindle are both new and true. Tracking is clean and the engine is tuned. What can it be?????
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04-11-2013 01:54 AM  7 years ago
crashheli

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naugatuck C.T U.S

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My guess is dampers
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04-11-2013 08:31 AM  7 years ago
Azalin

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Ankara-Turkey

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If the bolts on main blades are too tight, loosen them may solve your problem. Give it a try.Helibug Trex 700 HB7-RC Gasser | TRM VX270TT | V-Bar silver line
Helibug Trex 600 HB6-RC7 Gasser
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04-11-2013 05:48 PM  7 years ago
jgoodsell

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Sherbrooke, Qc, Canada

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My GSR260 hates low head speed (<~1400RPM)
the Dampners are also a good source for that kind of shake

Jeffrey
It seams that Gravity is worst around here !
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04-21-2013 07:14 AM  7 years ago
kogibankole

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albuquerque/ibadan

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any bent shafts ?if im not blade bogging youll find me pack puffing
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04-21-2013 08:55 AM  7 years ago
DVS11

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Valencia, CA USA

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Be careful when/if you loosen the blade bolts. loose blade bolts also cause head shake, just like overly tight bolts.
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04-23-2013 11:00 PM  7 years ago
blinny

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Clarksville, TN

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put some lube on the dampners if you have no bend shafts?
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Home✈️Aircraft🚁HelicopterGasser Model RC HelicoptersOther › JR z230 head shake before take off????
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