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


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Old 11-14-2017, 12:58 PM   #21 (permalink)
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Quote:
Originally Posted by jsbach#1 View Post
But you can't centre the tail servo like you can the cyclics. So if you put the horn on as close to centre as possible but its still off then how do you proceed. Do we call that zero position and then choose a hole accordingly on the horn and adjust length of rod so that throws are even both ways and zero position is a little counter torque ?

This is what drives me absolutely nuts about my beloved vcontrol and neos. There is no proper documentation. Just hidden little blurbs here and there buried at vstabi which are often so vague and grammatically off its hard to understand what they're saying.

We need / deserve one reference manual to rule them all.
I called and talked to Ron at Mikado on this, and he said it doesn't matter if the tail servo horn is centered, as long as you can get full travel and then you adjust the tail control rod so you get equal (with in 10) numbers in the tail setup tab, then you're good to go. I fought this for a while and I actually setup my 800 wrong, as I had values of 126 and 90, which would cause the heli to piro faster one way than the other. I think that's what's been causing my slight tail issue.

I too, wish there was a better English setup manual.....maybe with some tips. Their documentation isn't always clear and can leave you guessing. Good thing for the forums and the people here.
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Old 11-15-2017, 06:32 AM   #22 (permalink)
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my servo is 90 'd my throws are 100,100 in software and my tail optimization is at 51,10 . headspeed 2200 . should i leve it alone or try and get the optimization closer? and if yes where should i look?
Anthony
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Old 11-15-2017, 11:18 PM   #23 (permalink)
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If it works well with those values leave it alone.
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Old 11-16-2017, 09:17 AM   #24 (permalink)
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I tried 3 banks yesterday . 75%tail gain 80% and 85%, 2200 headspeed , switch 556 blades . 75% the optimizer said 44 and 10 but at 85%gain(there was wag so its at 75% for now) the optimizer is 84 and 10 . does that mean that with the switch blades I need to go up in headspeed?
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Old 11-17-2017, 09:02 AM   #25 (permalink)
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the 92mm switch tail blades that I ordered came in yesterday and I thought I would try them to see if it made a difference, as soon as I lifted off I noticed the tail wandering from side to side , so I upped the gain and it got a little better but wagged in funnels , also wandered in flips so I think I will go back to the 96 mm rails and leave it alone .
do you think its worth trying the 16t pinion and 2300 headspeed ? or just wait for the vtx blades to come back into stock( it flew well with them even with the small tail blades , although the tail wasn't as positive as it is now)
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Old 11-17-2017, 11:47 AM   #26 (permalink)
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Did you redo the optimizers for the tail?

Main blades should not make a difference on tail performance unless you run them at lower rpm. The VTX blades should be run at lower rpm than normal blades, about 100rpm less and you will have to change main rotor gain and redo optimizers as well.
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Old 11-17-2017, 04:57 PM   #27 (permalink)
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my original blades were the vtx's which I was running at 2100(2200) because the headspeed wouldn't hold) and had retuned the v bar for them , the tail blades I originally had on them were from a 480 ( didn't realize at the time) I tried to change the tail gain at the field with the football and somehow managed to mess up the directions of the swash so when I went to take off the heli tilted and broke the blades, vtx blades aren't in stock anywhere so I bought some switch 553 in between time . I am running them at 2200 , that's when I found the tail blades were too small so I changed them
with the switch tail blades the tail is hunting constantly with the rails the tail is solid.\
should I up my headspeed to 2300 for the switch blades or is 2200 close enough ( I have a 16t pinion already)
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Old 11-17-2017, 10:41 PM   #28 (permalink)
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From Mikado they state ideal rpm is between 1900 and 2300 so it is up to you to see which rpm suits your needs.
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Old 11-20-2017, 08:59 AM   #29 (permalink)
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tried 2300 don't like it do I went back to the 15t pinion and 2100-2200. I prefer 2100 but the headspeed drops with even the smallest collective change , also with full rudder? should I play with gov settings to see if it makes a difference or could there be a problem with the motor ?.
I also see , looking at various threads that people using the 15t pinion are getting over 2300 rpm , maybe i'm misreading it but I thought that 2200 was about as high as I could go with the 15t pinion is my gearing correct?
15tpinion
153 main gear (mod.7)
x nova 4025 1.5y 1120 kv
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Old 11-20-2017, 10:35 AM   #30 (permalink)
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The rpm drop is why your tail is not performing as it should. Investigate what is wrong, governor Neo or ESC, how old are your batteries? All these play a role on what is wrong/
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Old 11-20-2017, 10:48 AM   #31 (permalink)
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batteries were new this season and ir's are good
esc is a yge 120lv with latest firmware, fbl is a v bar with the separate sensor box not a neo . heli was bought used with a 22t pinion and cut down to use 500 mm blades, I replaced the parts needed to make it a 550 sx .
I have never had much luck with gov tuning , not sure what to look for , do you have any advice or links that I could use
thanks Anthony
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Old 11-20-2017, 10:49 AM   #32 (permalink)
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also is there a way to check the motor , I have a similar setup on my 480 (smaller obviously)and it performs perfectly
Anthony
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Old 11-20-2017, 10:52 PM   #33 (permalink)
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Basic YGE setup
YGE ESCs with stick programming | VStabi

Basic Neo governor setup
Governor | VStabi

Pro parameter governor setup
Governor | VStabi

Normally the default settings for the Neo governor with the YGE setup as per above link works really well.
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Old 11-21-2017, 06:22 AM   #34 (permalink)
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is it the same for the older v bar? i don't have a neo or v control
Anthony
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Old 11-21-2017, 07:25 AM   #35 (permalink)
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Sry my bad
here is legacy VBar setup Governor | VStabi

You will still need to program the YGE for external governor and here I cannot be of any help as I do not know them at all.
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Old 11-21-2017, 12:25 PM   #36 (permalink)
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something is off probably on the gov setup. YGE mikado version sometimes don't allow you to change all parameters. I struggled with mine trying to get the vbar gov right at first.

If the battery is weak or the pinion too big it would result in bogging with collective. I didn't see what size packs your using?

I've recently had excellent results with a smaller pinion and lower head speed but a bit more pitch to get the feel. The smaller pinion has helped me get more flights from weak packs.

96 rails hold very well for mine running 600 blades and lower head speeds - search no further IMO.

I tried calling, but it went to VM. Give me a ring I might be able to help...
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Old 11-21-2017, 05:06 PM   #37 (permalink)
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Mirko's video, he leaves tail optimizer on all the time. I might give it a try.
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Old 11-21-2017, 07:15 PM   #38 (permalink)
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4100 pulse packs 15t pinion 153 main gear . gear ratio set to 10.2 max headspeed set to 2200 . i can redo the yge setup . i think i followed mr mels video when i did it last time , the headspeeds that i select are correct and it moves between them smoothly , 2200 holds ok 2100 i hear an rpm drop when i do anything with the collective or tail . i have never adjusted the gov gain , i don't even know what its set to . i did see a call from California and thought it must be a wrong number , thanks for trying whats a good time to call you back(tomorrow)
Anthony
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Old 11-21-2017, 11:18 PM   #39 (permalink)
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What I was going to tell you is I spent way too much time messing with the mikado YGE following Mel's videos. You may need to look on the vstabi site to find the one I used. Mine was the smaller one and it may not apply to the 120.

Regardless I'll put money on the gov not set right as it shouldn't bog or at least I would not expect it to bog with minor inputs at the lower speeds.
Doesn't make sense. If the batteries hold at the higher speeds it should do better at 100 less. It may be the esc 'mode' or even the end points in the gov setup screen.
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Old 11-21-2017, 11:19 PM   #40 (permalink)
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And I've never adjusted gov gain either.
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