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Old 08-06-2019, 10:22 AM   #1 (permalink)
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Join Date: Mar 2019
Location: Norway
Default Having trouble with rudder output.

Hello, first time posting here but have been reading alot. This may have been talked about before but i have not found the solution to this yet, hoping to get some input here.


I have just recently build and black nitro 700 with the Ikon 2 HD/BT.


Everything looks fine and are setup by the manual, i have flown it 8 tanks by now.



The issue is like the title, rudder output. I have set it mechanicly correct i belive with servo horn at 90 degrees when tail is neutral. The distance between axle and ball is 15mm as in the manual.



When pitching hard the rudder has no problem pushing the nose to the left, but giving signal to the right it will not turn right at all. The tail will be be pretty much solid with som tailwag when giving full pitch without giving any pitch left or right from radio.



Looking at the "Events" afterwards it do get many messages that says "Rudder output limit reached".



Mechanicly the rudder goes all the way to binding. But i have not set it up to the max.


Is there anyone that could shine some light on this? Thanks
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Old 08-06-2019, 03:39 PM   #2 (permalink)
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You're running out of tail authority. Counter torque turns the nose left. Trying to turn the heli nose right takes lots of rudder.
What flybarless unit?
Tail blade size?
Main blade size?
Max main blade pitch?
Rpm?


What was your tail tuning process?
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Old 08-06-2019, 05:06 PM   #3 (permalink)
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Using the Ikon 2, not done any tuning yet.

13 pitch
690mm
115mm
1850rpm with os 105 and 26t / 15200rpm


Just done the endpoints and tested som gain points, at 30 now. Som tailwag and not solid enough, will stop and move little back.


Is there any point to set the endpoints wider? Or does the gyro override it and give as much as needed at for example punchouts?
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Old 08-07-2019, 07:11 AM   #4 (permalink)
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The gyro handles whatever is needed.
Endpoints are mechanical stops.

Without doing any tail tuning your not likely to get full performance.

Just setting main gain is not enough. You'll have to adjust other parameters.

Is this fast (oscillation) or slow wag?
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Old 08-07-2019, 08:04 AM   #5 (permalink)
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Location: always windy on the east coast
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when setting up the end points, they need to go to the stops, then back off a couple clicks. without full travel, your pissing up a rope.
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Old 08-07-2019, 12:11 PM   #6 (permalink)
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Seems like ive done a beginner mistake, i changed the endpoints so they went all the way out, and backed off a couple of clicks. Now the tail is rocksolid and having no issues with turning either way at punch out! Thanks!



There is a slight oscillating, but there has been som wind today so i have to do some more tuning next flight, did actually end on 48% on the gain at the end.


Im new to the Ikon, and any advanced tuning on any gyros so any tips is appriciated!
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