Which parts did you have in your Srimok ? First when you powered on your heli do not move it until your gyro sets, its too important Second you check your plades balance and tracking At Last about your head speed, try different rates on your governor
Did you fix it yet? My Vibe 90 had the same but worse. It seemed to be the low speed needle setting on the os91 sx cspec. Richen it up until it gurgled on spool up then lean until its just clean. Beleive it or not the vibration is gone. Not a gyro problem. But it will fry your servos.
check there isnt any play in your servo and then check the linkages and you can also check the gyro gain
check servo make sure it has no play
Get your engine tuned properly . The Turbulence did it once but when the engine was tuned well it subsided
Which parts did you have in your Srimok ? First when you powered on your heli do not move it until your gyro sets, its too important Second you check your plades balance and tracking At Last about your head speed, try different rates on your governor
Did you fix it yet? My Vibe 90 had the same but worse. It seemed to be the low speed needle setting on the os91 sx cspec. Richen it up until it gurgled on spool up then lean until its just clean. Beleive it or not the vibration is gone. Not a gyro problem. But it will fry your servos.
Look at the fuel foam! has it stoped yet?
If you are using gy611 increase the servo limit A & B in the gyro to 120% it will eliminate the tail vibration