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Mikado V-BAR Mikado V-Stabi/V-BAR Flybarless System Software and Hardware Support


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Old 01-20-2021, 09:07 AM   #1 (permalink)
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Default Cyclic bonus when doing tic toc

I have a goblin 570 sport that has a cyclic bonus when doing elevator or aileron tic toc. I lowered main rotor gain down to 50 and itís still doing it. The servos are futaba BLS272SV. Not sure what would cause this. Any help would be greatly appreciated.
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Old 01-20-2021, 10:36 AM   #2 (permalink)
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I am assuming you mean bounce, just a typo. What kind of cyclic bounce? Is it on a certain axis? Or does the entire heli bounce or oscillate? If you give a sharp input (elevator makes it more obvious), does the tail bounce back and wobble up and down after the input? Try going further up on the gain as well, too low of gain will create a slower oscillation that I have seen people confuse for a more crisp wobble that is a result of too high of gain.

What headspeed are you running? Have you tried raising it a bit, or even lower it to see if you get any change? Save your current FBL settings so you have a point to go back to, and then start playing with it. Raise the gain up a bit, go back down again, higher/lower style, ensure you actually have 8 degrees in cyclic setup, etc. Don't change any values too much at once if you are not comfortable tuning, 5-10 points at a time. Then fly it and see the difference. It's hard to just give advice on exactly what you need to change without seeing a video of what is actually happening though, as everyone will describe and issue with their heli slightly differently.
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Old 01-21-2021, 05:36 AM   #3 (permalink)
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I find going through this helps: https://www.vstabi.info/en/node/2043 There could still be issues when its done of course, but it gives a nice starting point.
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Old 01-21-2021, 08:35 AM   #4 (permalink)
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Ok thanks I will look into that when I get home.

I got to fly this morning and Iím flying at 2300 so I tried 2500 and it helped a little bit but still there. I tried lowering and raising gain not much change at all when moving gain around.

Tried fast elevator inputs no kind of Bouncing or rocking in the tail when doing that.

So itís only in tic toc the hole heli seems to wobble not sure about the tail wobbling itís kind of hard to tell.
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Old 01-21-2021, 09:14 AM   #5 (permalink)
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Hello if you are New to the Vbar eco system try' paddle simulation ' this is basically boost to the cyclic like pitch boost in colectiv . From stock setting in Neo you have around 10 .Try 0 and start from 120 agility 60 style 50 gain .This is good settings for start.
Let us now.
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Old 01-21-2021, 09:46 AM   #6 (permalink)
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Quote:
Originally Posted by cessaar View Post
Hello if you are New to the Vbar eco system try' paddle simulation ' this is basically boost to the cyclic like pitch boost in colectiv . From stock setting in Neo you have around 10 .Try 0 and start from 120 agility 60 style 50 gain .This is good settings for start.
Let us now.
Iím not new to neo. Iím going to try the setting you suggested tomorrow morning. I think itís a servo or something like that because head speed and gain changes didnít do much in effecting the wobble. Mybe something in set up. idk
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Old 01-21-2021, 12:00 PM   #7 (permalink)
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Iím going to check the log when I go home
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Old 01-22-2021, 09:08 AM   #8 (permalink)
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So I used the above settings and still the same. I have High vibration level stored in log but I was doing 3D flying. So this morning I just hovered it and going to check the log when I get home. I was also thinking about checking the swash to make sure itís level at full negative and full positive.
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Old 01-22-2021, 11:04 AM   #9 (permalink)
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High vibration levels is normal when you’re flying, you need to check the analyzer while you’re hovering..
It will give you high levels in the log when you fly around, that’s normal

Also if you’re going to run higher RPMs you need harder dampers.
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Old 01-27-2021, 08:18 AM   #10 (permalink)
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Yeah when hovering im at raised vibration level. I level swash plate at full negative and full positive that seemed to help a lot. Now I only notice it when doing elevator tic toc with the skids facing me. Anything else I can do?
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Old 01-27-2021, 09:24 AM   #11 (permalink)
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Itís Picking up the movements when youíre flying 3-D.. itís nothing you can do about that just keep lying it.
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Old 01-27-2021, 09:34 AM   #12 (permalink)
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Ok thanks
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Old 04-18-2021, 06:38 PM   #13 (permalink)
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This thing is really bothering me because my trex 700x doesnít do that and my old synergy 516 never did that itís very unstable when doing elevator tic toc seems to fly really well besides that.
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