t rex 450

[martin uly]

well after ploughin t rex into garden fence ive re-built it , however its got a lot ov vibration going through it can see from landing legs , ive changed ,feathering shaft,main shaft,flybar and blades , ive also noticed that it keeps twitching the tail left and rite , anyone?????????????

[BigBadDom]

Just to double check: have you balanced the new blades and checked the tracking of them in hover as both of these will cause vibration if out.

[BenjaminKenobi]

Hi there. Yep, you got something bent some where. Vibes cause the tail hunting you're seeing. Feathering shaft and main shaft changed so how about tail shaft? Main blades balanced. Main blade grips put together correctly with all washers etc? The hub on the head which connects blade grips to main shaft isn't bent? Did you change any links causing the main blades to go out of track? Were you able to check the blade tracking?

Let us know.

[martin uly]

havnt changed tail shaft, main grips put together as per align manual, main blades balanced,and havnt changed any links

[martin uly]

it flys ok dosnt shake bad but can see vibes through landin legs

[MarkG_R1]

Take the main blades and tail blade holders off and spin it up to see if the tail shaft is bent

[BenjaminKenobi]

How about the flybar? Sorry, can't see your setup in tapatalk.

[martin uly]

have changed the fly bar and measured each side and spot on , will spin it up without blades to see if tail shaft ,then will change it anyway and change main shaft again ( av got loads lol) and post update later in wk