KendallB
07-05-2007, 12:07 PM
Hi Guys!
I have a really wierd problem with the tail on my Synergy that I just cannot figure out. When I put the heli into a hover, if I leave the rudder stick alone and just hold the hover, the tail will twitch side to side very small amounts (kind of like gyro wag, but the gyro is set to a gain of AVCS 35%). The way is not really the problem. The problem is that if I leave it in a hover, the tail will move constantly to the right in small increments. If I leave it in the hover, within about 30 seconds the heli will be 90 degrees from where it started! Eventually it would do an entire pirouette if I left it alone and just held the hover.
I am flying with the 14MZ radio and 14CH synth receiver, and I have tried both channels 34 and 55. I am flying with the GY611 Gyro, and I have it mounted up front near the receiver (not on the gyro mounting plate as I was told that mounting it back there was not really necessary).
I tried moving the gain all the way up to about 55%, but it had no effect on this problem. When I had the gain at or above 40%, I would get tail wag during forward flight, so 35% to 37% appears to be about the max I can go without getting tail wag (and that jibes with the manual).
I did think perhaps my gyro was bad, so I first replaced the sensor with one from my crashed T-Rex 600 (another story!), and that had no effect. So then I tried swapping the amp, and I think it got a little better, but the problem was still present and it would creep sideways still.
So as far as I can tell this problem is not electrical, and has to be somehow related to some wierd mechanical issue in my heli? I went through the tail linkage rod and made sure that the links were not too tight and that it was mechanically centered.
Would this problem be related to the fact that my gyro sensor is not mounted on the rear mounting plate, and is perhaps too far from the main shaft of the heli? I do plan to move it back there to see if that has any effect or not.
The tail on my Raptor 90 is rock solid with the GY611, but I am flying that bird on my JR 9303 still. When I had my T-Rex 600 flying on my 14MZ, the tail on it was rock solid also using the GY611 that is now currently in my Synergy.
Hi Guys!
I have a really wierd problem with the tail on my Synergy that I just cannot figure out. When I put the heli into a hover, if I leave the rudder stick alone and just hold the hover, the tail will twitch side to side very small amounts (kind of like gyro wag, but the gyro is set to a gain of AVCS 35%). The way is not really the problem. The problem is that if I leave it in a hover, the tail will move constantly to the right in small increments. If I leave it in the hover, within about 30 seconds the heli will be 90 degrees from where it started! Eventually it would do an entire pirouette if I left it alone and just held the hover.
I am flying with the 14MZ radio and 14CH synth receiver, and I have tried both channels 34 and 55. I am flying with the GY611 Gyro, and I have it mounted up front near the receiver (not on the gyro mounting plate as I was told that mounting it back there was not really necessary).
I tried moving the gain all the way up to about 55%, but it had no effect on this problem. When I had the gain at or above 40%, I would get tail wag during forward flight, so 35% to 37% appears to be about the max I can go without getting tail wag (and that jibes with the manual).
I did think perhaps my gyro was bad, so I first replaced the sensor with one from my crashed T-Rex 600 (another story!), and that had no effect. So then I tried swapping the amp, and I think it got a little better, but the problem was still present and it would creep sideways still.
So as far as I can tell this problem is not electrical, and has to be somehow related to some wierd mechanical issue in my heli? I went through the tail linkage rod and made sure that the links were not too tight and that it was mechanically centered.
Would this problem be related to the fact that my gyro sensor is not mounted on the rear mounting plate, and is perhaps too far from the main shaft of the heli? I do plan to move it back there to see if that has any effect or not.
Does anyone have any suggestions on what could cause this problem?
I have a really wierd problem with the tail on my Synergy that I just cannot figure out. When I put the heli into a hover, if I leave the rudder stick alone and just hold the hover, the tail will twitch side to side very small amounts (kind of like gyro wag, but the gyro is set to a gain of AVCS 35%). The way is not really the problem. The problem is that if I leave it in a hover, the tail will move constantly to the right in small increments. If I leave it in the hover, within about 30 seconds the heli will be 90 degrees from where it started! Eventually it would do an entire pirouette if I left it alone and just held the hover.
I am flying with the 14MZ radio and 14CH synth receiver, and I have tried both channels 34 and 55. I am flying with the GY611 Gyro, and I have it mounted up front near the receiver (not on the gyro mounting plate as I was told that mounting it back there was not really necessary).
I tried moving the gain all the way up to about 55%, but it had no effect on this problem. When I had the gain at or above 40%, I would get tail wag during forward flight, so 35% to 37% appears to be about the max I can go without getting tail wag (and that jibes with the manual).
I did think perhaps my gyro was bad, so I first replaced the sensor with one from my crashed T-Rex 600 (another story!), and that had no effect. So then I tried swapping the amp, and I think it got a little better, but the problem was still present and it would creep sideways still.
So as far as I can tell this problem is not electrical, and has to be somehow related to some wierd mechanical issue in my heli? I went through the tail linkage rod and made sure that the links were not too tight and that it was mechanically centered.
Would this problem be related to the fact that my gyro sensor is not mounted on the rear mounting plate, and is perhaps too far from the main shaft of the heli? I do plan to move it back there to see if that has any effect or not.
The tail on my Raptor 90 is rock solid with the GY611, but I am flying that bird on my JR 9303 still. When I had my T-Rex 600 flying on my 14MZ, the tail on it was rock solid also using the GY611 that is now currently in my Synergy.
Hi Guys!
I have a really wierd problem with the tail on my Synergy that I just cannot figure out. When I put the heli into a hover, if I leave the rudder stick alone and just hold the hover, the tail will twitch side to side very small amounts (kind of like gyro wag, but the gyro is set to a gain of AVCS 35%). The way is not really the problem. The problem is that if I leave it in a hover, the tail will move constantly to the right in small increments. If I leave it in the hover, within about 30 seconds the heli will be 90 degrees from where it started! Eventually it would do an entire pirouette if I left it alone and just held the hover.
I am flying with the 14MZ radio and 14CH synth receiver, and I have tried both channels 34 and 55. I am flying with the GY611 Gyro, and I have it mounted up front near the receiver (not on the gyro mounting plate as I was told that mounting it back there was not really necessary).
I tried moving the gain all the way up to about 55%, but it had no effect on this problem. When I had the gain at or above 40%, I would get tail wag during forward flight, so 35% to 37% appears to be about the max I can go without getting tail wag (and that jibes with the manual).
I did think perhaps my gyro was bad, so I first replaced the sensor with one from my crashed T-Rex 600 (another story!), and that had no effect. So then I tried swapping the amp, and I think it got a little better, but the problem was still present and it would creep sideways still.
So as far as I can tell this problem is not electrical, and has to be somehow related to some wierd mechanical issue in my heli? I went through the tail linkage rod and made sure that the links were not too tight and that it was mechanically centered.
Would this problem be related to the fact that my gyro sensor is not mounted on the rear mounting plate, and is perhaps too far from the main shaft of the heli? I do plan to move it back there to see if that has any effect or not.
Does anyone have any suggestions on what could cause this problem?