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HomeAircraftHelicopterMain Discussion › trex 600 nodding
06-23-2014 12:11 PM  3 years agoPost 1
myjane

rrApprentice

new zealand

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hi i have had this problem for a while now and lots of you have helped thanks but its still there and pulled down for the third time i am centering my area on the clutch and head bearings again there is nothing in this heli that not new ,yesterday after a third rebuild of the feathering bar it nodded full on ,we must remember we have done everything to find the nodding to the point that the boys are calling me noddy ,not good ,,, so tonight i was told the main bearings in the mast , 1 top one the writing must be up in the bearing housing , 2 the bottom beating writing must be down ,well,, so i have done that , and a second new clutch for good measure i need to combat this thing as it owes me heaps so when its sorted i am going to cane the **** out of it to vent out ,,,,,has any others herd of the bearing writing placement as told or am , grant

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06-23-2014 01:31 PM  3 years agoPost 2
Four Stroker

rrElite Veteran

Atlanta

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Nodding on a 600 is almost always caused by too low of a head speed relative to the dampers. May also be defective blades, out of balance blades, one grip tighter than the other, etc. If you left out the brass spacers that squeeze the dampers they may be piteously soft and causing mast bumping.

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06-23-2014 02:42 PM  3 years agoPost 3
Richardmid1

rrProfessor

Leeds, England

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Its not the bearings that go in a certain way its the bearing blocks, usually the top bearing presses in from the top in the top bearing block and the bottom bearing presses in from the bottom in the bottom bearing block.

Is this a flybarred or FBL Trex 600?

60% of the time, it works every time!

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