7CAP elevator channel problem
10-28-2006 | 10:26 AM
#1
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From: lynchburg,
VA
7CAP elevator channel problem
Hi,
I recently acquired a 7CAP and am experiencing a problem that I do not understand. With the elevator (channel 2) and only the elevator, when the ratio is at neutral, the servo is positioned at almost full travel to one direction. When I revers the servo, it travels almost all the full possible travel in the opposite direction. My trim and sub trims are at 0, high and low travel are at 100%, and no mixes are enabled. I tried using the master reset on the radio, that made no difference, and the modulation is correct. When I move the servo to another channel, rudder for example, I do not experience this problem. I have tried different servos and different receivers, but the symptoms do not change. Thanks in advance!!!
I recently acquired a 7CAP and am experiencing a problem that I do not understand. With the elevator (channel 2) and only the elevator, when the ratio is at neutral, the servo is positioned at almost full travel to one direction. When I revers the servo, it travels almost all the full possible travel in the opposite direction. My trim and sub trims are at 0, high and low travel are at 100%, and no mixes are enabled. I tried using the master reset on the radio, that made no difference, and the modulation is correct. When I move the servo to another channel, rudder for example, I do not experience this problem. I have tried different servos and different receivers, but the symptoms do not change. Thanks in advance!!!
11-02-2006 | 03:11 PM
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From: Champaign, IL
RE: 7CAP elevator channel problem
Hi Gary,
It sounds as though this is a problem in the way the control rod is set up on the servo horn. Try removing only the servo horn from the servo, recenter the servo itself by turning the transmitter on and then slide the servo arm down over the output shaft. This should solve your problem.
I hope you find this information helpful. You can also reach our Futaba support technical team at 217-398-8970, or via fax at 217-398-7721.
Sincerely,
Krysta Hunt
Product Development & Support Specialist
Futaba Service Center USA
It sounds as though this is a problem in the way the control rod is set up on the servo horn. Try removing only the servo horn from the servo, recenter the servo itself by turning the transmitter on and then slide the servo arm down over the output shaft. This should solve your problem.
I hope you find this information helpful. You can also reach our Futaba support technical team at 217-398-8970, or via fax at 217-398-7721.
Sincerely,
Krysta Hunt
Product Development & Support Specialist
Futaba Service Center USA
ORIGINAL: garyandnancy
Hi,
I recently acquired a 7CAP and am experiencing a problem that I do not understand. With the elevator (channel 2) and only the elevator, when the ratio is at neutral, the servo is positioned at almost full travel to one direction. When I revers the servo, it travels almost all the full possible travel in the opposite direction. My trim and sub trims are at 0, high and low travel are at 100%, and no mixes are enabled. I tried using the master reset on the radio, that made no difference, and the modulation is correct. When I move the servo to another channel, rudder for example, I do not experience this problem. I have tried different servos and different receivers, but the symptoms do not change. Thanks in advance!!!
Hi,
I recently acquired a 7CAP and am experiencing a problem that I do not understand. With the elevator (channel 2) and only the elevator, when the ratio is at neutral, the servo is positioned at almost full travel to one direction. When I revers the servo, it travels almost all the full possible travel in the opposite direction. My trim and sub trims are at 0, high and low travel are at 100%, and no mixes are enabled. I tried using the master reset on the radio, that made no difference, and the modulation is correct. When I move the servo to another channel, rudder for example, I do not experience this problem. I have tried different servos and different receivers, but the symptoms do not change. Thanks in advance!!!
11-02-2006 | 04:56 PM
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From: lynchburg,
VA
RE: 7CAP elevator channel problem
Hi,
Thanks for this, but no, this does not help. The problem is that the when the elevator stick is at center, the trim is at center, the end points are at 100%, the subtrim is at neutral, and all the mixes are off, the elevator servo, even when disconnected from the airplane surfaces, moves almost all the way to one end of its travel. When you unplug the servo and plug it into channel 1 or channel 4 under the same conditions, the servo moves to the center of its travel. When hooked up to channel 2 and you move the stick down, the is almost no additional travel, when you move the stick up, there is normal travel (reverse channel 2 and observe the opposite result).
I have tried this with different receivers and different servos, and observe the same result. Thanks in advance for your assistance.
Thanks for this, but no, this does not help. The problem is that the when the elevator stick is at center, the trim is at center, the end points are at 100%, the subtrim is at neutral, and all the mixes are off, the elevator servo, even when disconnected from the airplane surfaces, moves almost all the way to one end of its travel. When you unplug the servo and plug it into channel 1 or channel 4 under the same conditions, the servo moves to the center of its travel. When hooked up to channel 2 and you move the stick down, the is almost no additional travel, when you move the stick up, there is normal travel (reverse channel 2 and observe the opposite result).
I have tried this with different receivers and different servos, and observe the same result. Thanks in advance for your assistance.
11-02-2006 | 05:20 PM
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From: Locust Grove,
GA
RE: 7CAP elevator channel problem
I know this is a factory thread, but have you reset your memory location and tried it again.
If it still does it then I would send the radio in.
If it still does it then I would send the radio in.
11-02-2006 | 05:27 PM
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From: wilmington, DE
RE: 7CAP elevator channel problem
make sure that "flaperons" are not on, test this by moving the variable circular control, if THAT moves the elevator servo, thet turn the flaperon function off, also check the elevon function as well. I have several 7C's and they have been great
11-03-2006 | 11:16 AM
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From: Champaign, IL
RE: 7CAP elevator channel problem
As a last check I would recommend going into a blank model and see if you still experience this problem. If you do, then you would need to send this radio back to the service center so that our technicians can check this out for you. If you do not notice this behaviour in a blank model, then do a reset in the original model as there is some type of mixing going on that is causing the problem.
I hope you find this information helpful. You can also reach our Futaba support technical team at 217-398-8970, or via fax at 217-398-7721.
Sincerely,
Krysta Hunt
Product Development & Support Specialist
Futaba Service Center USA
I hope you find this information helpful. You can also reach our Futaba support technical team at 217-398-8970, or via fax at 217-398-7721.
Sincerely,
Krysta Hunt
Product Development & Support Specialist
Futaba Service Center USA
ORIGINAL: garyandnancy
Hi,
Thanks for this, but no, this does not help. The problem is that the when the elevator stick is at center, the trim is at center, the end points are at 100%, the subtrim is at neutral, and all the mixes are off, the elevator servo, even when disconnected from the airplane surfaces, moves almost all the way to one end of its travel. When you unplug the servo and plug it into channel 1 or channel 4 under the same conditions, the servo moves to the center of its travel. When hooked up to channel 2 and you move the stick down, the is almost no additional travel, when you move the stick up, there is normal travel (reverse channel 2 and observe the opposite result).
I have tried this with different receivers and different servos, and observe the same result. Thanks in advance for your assistance.
Hi,
Thanks for this, but no, this does not help. The problem is that the when the elevator stick is at center, the trim is at center, the end points are at 100%, the subtrim is at neutral, and all the mixes are off, the elevator servo, even when disconnected from the airplane surfaces, moves almost all the way to one end of its travel. When you unplug the servo and plug it into channel 1 or channel 4 under the same conditions, the servo moves to the center of its travel. When hooked up to channel 2 and you move the stick down, the is almost no additional travel, when you move the stick up, there is normal travel (reverse channel 2 and observe the opposite result).
I have tried this with different receivers and different servos, and observe the same result. Thanks in advance for your assistance.
