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| [SOLVED] What's going on here? https://www.spirit-system.com/phpBB3/viewtopic.php?f=20&t=838 |
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| Author: | kmaluo [ Fri 14. Aug 2015 5:02:21 ] |
| Post subject: | [SOLVED] What's going on here? |
It appeared to be an uneventful flight, but when I opened the flight log, I found the following. Could this just be my rudder speed is too high? I didn't lose signal and didn't experience a brown out. https://www.dropbox.com/s/rethmo01b3dvc ... 2.png?dl=0 The signal loss warning concerns me, but why does it happen only after the cyclic, rudder warnings? Also, my Hobbywing 50a v3 is set at 5.2 volts, would raising it to 6 volts help the low volt warning? |
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| Author: | ZeXx86 [ Fri 14. Aug 2015 15:34:35 ] |
| Post subject: | Re: What's going on here? |
I am not sure what is happening, but it seems that when your cyclic/rudder limit is reached, then it consuming lot of power so that the voltage drops under 2.9V. This is very dangerous and must be fixed as soon as possible. Maybe your servo is binding with the mechanics somewhere, so you can check your limits in all the positions. Especially when the cyclic is in max and min collective you should move with aileron and elevator sticks. |
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| Author: | Coco66 [ Fri 14. Aug 2015 18:14:01 ] |
| Post subject: | Re: What's going on here? |
kmaluo, to check the cyclic ring, put the collective stick at max, with one hand keep turning the blades and with the other hand go to the 8 main "corners" of aileron/elevator (assuming mode 2). Then redo with mid-stick and full negative. Look for servo or mechanical binding. Start with cyclic range at same value as pitch range, and decrease in case of binding. |
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| Author: | kmaluo [ Fri 14. Aug 2015 23:09:04 ] |
| Post subject: | Re: What's going on here? |
Coco66 wrote: kmaluo, to check the cyclic ring, put the collective stick at max, with one hand keep turning the blades and with the other hand go to the 8 main "corners" of aileron/elevator (assuming mode 2). Then redo with mid-stick and full negative. Look for servo or mechanical binding. Start with cyclic range at same value as pitch range, and decrease in case of binding. Thanks guys! Coco, I think that was the ticket, the manual talks about servo horns, pushrods, linkage binding, but not about the swash actually putting too much pressure on the main shaft. Everything else looked good, but at zero collective, the main shaft was slowing down just a tad with full right aileron. Tomas, maybe the manual can touch on this? It's probably common sense and totally my fault. Also, will there be finer cyclic controls where you can adjust each direction instead of just a general cyclic range? Thanks again! |
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| Author: | ZeXx86 [ Sat 15. Aug 2015 13:49:44 ] |
| Post subject: | Re: What's going on here? |
You are welcome. Normally everything should be very symmetric so one range should be enough. In reality geometry is assymetric little bit and you can fix this by using Servo Travel Correction. One range is used there, because you want that there is same max. angle for each side. If it is not equal then there is mostly some problem in the mechanic setup. |
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