TREX HDE TAIL WOBBLE.
07-27-2006 | 02:55 PM
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From: Salt Lake City, UT
TREX HDE TAIL WOBBLE.
ON MY FIRST FLIGHT MY TREX TAIL SERVO MOVED BACK AND FORTH AT ABOUT AN INCH. CONSTANT WOBBLE THAT FREAKED ME OUT AND CAUSED A CRASH. CAN ANYONE TELL ME IF THIS WAS BECAUSE OF GYO OR SERVO INTERFIERENCE? THANKS MIKE.
THIS IS ONE TOUGH HELI. NOT ALOT OF DAMAGE!
THIS IS ONE TOUGH HELI. NOT ALOT OF DAMAGE!
07-27-2006 | 08:47 PM
#2
RE: TREX HDE TAIL WOBBLE.
Mike,
If it was going side to side it what you call hunting. Its the Gyro over compensating and the gyro needs to be turned down. My T-rex will go up and down , but this seems to be caused by the blades not tracking correctly. What are the settings on your gyro ? How are your blades tracking ??
Andy
If it was going side to side it what you call hunting. Its the Gyro over compensating and the gyro needs to be turned down. My T-rex will go up and down , but this seems to be caused by the blades not tracking correctly. What are the settings on your gyro ? How are your blades tracking ??
Andy
07-28-2006 | 12:48 PM
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From: Winchester,
VA
RE: TREX HDE TAIL WOBBLE.
On my Rex HDE this has happened only 1 time, the tail hunting that is. I landed and found that the belt was shredding so I suggest you check that belt carefully. Spinning the rotor by hand revealed that the belt was moving side to side on the rear pulley and getting off the left side at times causing it to shred.
I installed the rear idler pulley from an MX400 and it solved the belt issue.
Other causes are the ball link on the servo horn is too far out from the center. It should be as close as possible with a digital servo. The gyro gain could be too high and the tail may be binding as well. Also make sure when you plug in the battery that you let the heli sit without touching until the gyro initializes if it's a heading hold gyro. Some details on your setup would help.
I installed the rear idler pulley from an MX400 and it solved the belt issue.
Other causes are the ball link on the servo horn is too far out from the center. It should be as close as possible with a digital servo. The gyro gain could be too high and the tail may be binding as well. Also make sure when you plug in the battery that you let the heli sit without touching until the gyro initializes if it's a heading hold gyro. Some details on your setup would help.
