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HelicopterFlybarless Rotor Head SystemsOther › GU-365 Retardation!
03-18-2009 03:25 PM  8 years agoPost 1
ginnz

rrApprentice

MB,Canada

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well, i have my GU-365 mounted to my Hoss X4E, along with the Gaui FBL head.

i set it all up over the last few days, and yesterday was going to give it a try. i got all the servo's set up and working the correct way, the swash moves correctly on the bench. im thinking, hey, ill try and set up the tail!

so, i took the main and tail blades off, and set it on the table. when i spool it up to check for vibes, i see none, its very smooth. at 1/4 stick, i see the tail servo "twitch" violently....and the 3 swash servo's are twitching away.... all over the place...... like terrible static twitches. obviously it wont fly this way.

so i started to ground everything i can on the heli.... i grounded the main gear/servo plate, and then grounded receiver mount (i made a small aluminum plateto mount the RX on), checked for continuity from the (-) lead on the esc to all grounded surface's, and they all check out.

so i fire it up again and everything twitches all over the place! totally UN-FLYABLE....

i dont know what to do at this point, everything is grounded from static....

and as i intially set it up, i had swash mix of +90/+90/-90.....

after its all bound, i reduced the gain on the ele/ail pots on the "365" to approx 35%, and went in the radio to reduce the mix to 50% of the initial set up values, and when i set the pitch value to 45%, it raises the swash to a crazy level... WTF?

ill post a picture of my setup as it sits now. maybe, just maybe i need to move the "365", but on a 450 class bird, theres certainly limited real estate on it.....

i just don't rally know how anyone can fly this thing (the 365). its sooo spooky, and i can't really see me trusting a five or six hundered dollar bird to it....

i usually don't give up quicly on things, and will give it all i can, but if the initial spool up shows the servo's hopping around all over the place, theres no way to even test the damn thing!

maybe ill see if i can get some video of it.

BTW- im using HS-65 servo's on the cyclic, and a futaba S9650 on the tail.....

ginnz.

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03-19-2009 05:16 PM  8 years agoPost 2
bullseye1

rrApprentice

Orange County, ca

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Your gain is a way too high, the gain pods are super sensitive and it only takes a fraction of a turn to change, as for the tail servo you need to lower the gain in your transmitter.
Iwaa never able to make the Gu365 to work on the flybarless Gauii 200 that came with but when I converted my Trex 450 it worked great.

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03-19-2009 08:56 PM  8 years agoPost 3
Melnic

rrElite Veteran

Columbia, MD,USA

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Same issues I had but when I removed my tail blades, it did not twitch at all.
I used 4 squares at the corners of the GU-365. I mounted it on the bottom plate of the heli on the inside w/ the dip switches facing down and cut a little bit of my lower plastic plate so I could get to all the dip switches. I spent DAYS trying to be happy w/ it.
When I initially flew it, the heli would move to the right. When I first spun it up w/ the main blades removed (in my hand) the swash leaned to the right. Removing the tail blades resolved that but still had random twitches. I balanced the tail blades and the swash lean went away but not all the twitches.
Returned the GU-365 to the ebay Guy I got it from then got an SK-360 and I'm doing great now!
Over on Helifreak the Gaui guys resort to all kinds of tricks to remove vibrations. I didn't want to fight it. It was a good move for me to return it. I just knew one wrong move and the thing would twitch on me.

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03-23-2009 07:12 PM  8 years agoPost 4
ginnz

rrApprentice

MB,Canada

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ok, so i moved the gu365 from the top of the bird, to the bottom, and the damn thing does the same thing..... when i plug the bird in, it arms, and the servo's twitch all over the place, im at a loss here, what could cause this?

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03-23-2009 07:44 PM  8 years agoPost 5
Melnic

rrElite Veteran

Columbia, MD,USA

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It should not twitch when you first turn it on. That would not be a vibration issue.
Something sounds very wrong w/ the Rx or the GU-365 if it twitches with it sitting still on the table.

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03-23-2009 08:50 PM  8 years agoPost 6
Ben-T-Spindle

rrProfessor

Central Illinois

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Has anyone actually successfully flown one of these?

... BTS

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03-23-2009 09:10 PM  8 years agoPost 7
Melnic

rrElite Veteran

Columbia, MD,USA

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Has anyone actually successfully flown one of these?
Gaui.... HAHAHA.

According to the Gaui section on the Helifreak site, a bunch of Gaui 200 people.

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03-23-2009 11:54 PM  8 years agoPost 8
Ironhide

rrVeteran

dexter mi us

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I'm know wizz, but I had no trouble with the 365 . I do agree its a little sensitive . But it is designed for a very small machine .

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03-24-2009 03:03 AM  8 years agoPost 9
dave75d

rrKey Veteran

Jacksonville, FL

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i am flying one on my 450 (albeit not very well). most of the "bugs have been worked out, through lots of time and attention. still dont have the guts to flip it.

ten grand in helis and all i can do is hover

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03-24-2009 03:18 AM  8 years agoPost 10
ginnz

rrApprentice

MB,Canada

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well, im flippin' mine! in the FS section, and getting an sk-360!

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