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HomeAircraftHelicopterFlybarless Rotor Head SystemsFutaba CGY › GOBLIN URUKAI AND CGY750
10-31-2017 11:17 PM  8 months agoPost 1
NIKOS PAPISTAS

rrApprentice

KOZANI-GREECE

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Hello to all of you.
I’m waiting for new project and I have a question about.
I start to make one Goblin urukai ennio edition for fai flight.
I’m a familiar with 750 but it’s first time with Sab models.
I see in the manual that the gyro sensor put upside down.
The cgy work upside down the sensor?
All models that I setting up I put the sensor normally (eagle3-TREX-sdx etc).
Something else about gain for the first flight in ail-elev..
In my models in hovering mode I put 85% without issius.
What is safe setting for first flight to start it without going in critical situations the heli?
The setup that I use is
Goblin urukai Ennio Graber.
Cyclic servo JR SLS01
Tail servo Futaba 276sv
Motor Xnova 4530-525kv
Blade stock one 730 (two blade for main and tail rotor)
Esc kosmik 200
Battery gens ace 5300mha 30c
Hovering mode 1450 rpm
Idle up 1950 rpm.
Thanks for your help.

Hirobo SDX D3 Fbl - ALIGN T-REX 700 F3C V3 FL HEAD-ALIGN T-REX 500 DFC

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11-01-2017 12:07 AM  8 months agoPost 2
Doublah

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USA

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Yes, not a problem mounting it upside down. Just make sure all servos are correct direction with stick input and gyro output.

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11-01-2017 12:32 AM  8 months agoPost 3
Dr.Ben

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Richmond, VA, USA

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+1

What are you referring to with the phrase "safe setting"?

Ben Minor

Peak Aircraft/Team Minicopter Team Futaba Team Kontronik USA

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11-01-2017 01:50 AM  8 months agoPost 4
NIKOS PAPISTAS

rrApprentice

KOZANI-GREECE

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Hi Dr Ben .
I mean to take off the heli for first flight without any wobblie etc.
I have some issues in the past with one eagle 3 with some vibration and lot of gain that the heli come in critical situation.

Hirobo SDX D3 Fbl - ALIGN T-REX 700 F3C V3 FL HEAD-ALIGN T-REX 500 DFC

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11-01-2017 03:04 AM  8 months agoPost 5
Chris.C

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Hong Kong

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While the CGY works with sensor mounted upside down, it induces hunting following the manual to mount it onto the main chasis plate. Found it in mine and a few others Urukay Carbon.

What we did is to mount the sensor with the controller onto the small carbon plate just behind the mast.

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11-01-2017 07:05 AM  8 months agoPost 6
Doublah

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USA

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Dr. Ben knows a lot more about this gyro, but 85% gain on the head seems high even in a hover? Not sure if that is a good idea for it to be that high on the first couple of flights?

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11-01-2017 07:18 AM  8 months agoPost 7
NIKOS PAPISTAS

rrApprentice

KOZANI-GREECE

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My eagle 3 wc flying 84% ail-elev without problem.
TREX 700 87%.
Maybe to start with 70% and increase slowly.
Dr Ben what you suggested.?

Hirobo SDX D3 Fbl - ALIGN T-REX 700 F3C V3 FL HEAD-ALIGN T-REX 500 DFC

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11-02-2017 12:13 AM  8 months agoPost 8
Dr.Ben

rrMaster

Richmond, VA, USA

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These numbers should be uneventful:

Head gain 70%. You'll be able to run a lot more if you set swash rate for the hover bank in the 750 to 40% (for starters). A LOT more.

Style at 85-95% (for HOVER bank). Yes I said that high.

From there increase the head gain as high as you can by running a lower swash rate and while keeping the transmitter dual rates/AFR at 100. Remember swash rate also tunes the piro compensation. We'll cover this point later....

You'll need more stop tune in hover on ELE. Like 100-110% (the actual setting). Leave AIL stop tune alone. You can run heading hold gain on AIL and ELE as high as you can get them in hover without inducing a wobble, BUT LEAVE THEM STOCK FOR AEROS.

See how that works for you.

Ben Minor

PS: the gyro holds like a vice in hover when head gain is at 125-150%. Most models will allow this when the swash AFR is dialed down. YOu get >100% head gain by increasing base gain to 150%.

Peak Aircraft/Team Minicopter Team Futaba Team Kontronik USA

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11-26-2017 12:18 AM  7 months agoPost 9
NIKOS PAPISTAS

rrApprentice

KOZANI-GREECE

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Hi again.
I’ll make a setup right now and I see some issues....(explain)...
I use the Sab servo horn that he suggest in manual.(servo JR SLS01).
I start with the ball link into the center hole in servo arm (manual settings) but I see in sws rate menu into 750 that I can take 9 deg cyclic.
I’ll change the ball link from center to outer hole from the servo arm and I take 9.5 (almost) but I’m in 80% sws rate (not 70% maximum like Dr Ben suggest).
Also with level everything i have some different between inputs (explain).... up elev etc 9.5deg.....down elev 8.5 deg.
The same and for ail right with left ail not same.

The design of urukai have some issues because you can’t leave to put other horn more bigger to go out in hole to take other measurement (for 750 Cgy ) because everything its closely around servo plate-horn.

Anyone some help?

Hirobo SDX D3 Fbl - ALIGN T-REX 700 F3C V3 FL HEAD-ALIGN T-REX 500 DFC

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11-26-2017 03:02 PM  7 months agoPost 10
Dr.Ben

rrMaster

Richmond, VA, USA

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Can you run a longer ball on the inner ring of the swash?

Ben Minor

Peak Aircraft/Team Minicopter Team Futaba Team Kontronik USA

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11-26-2017 03:14 PM  7 months agoPost 11
NIKOS PAPISTAS

rrApprentice

KOZANI-GREECE

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Hi.
I don’t thing so Ben.
I have only from Hirobo from swash but I don’t know if it’s ok.The plastic ball link from linkage from Sab it’s harder and bigger.I don’t thing so if he works with Hirobo ball.
Anything else that I can do?

Hirobo SDX D3 Fbl - ALIGN T-REX 700 F3C V3 FL HEAD-ALIGN T-REX 500 DFC

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11-27-2017 01:44 AM  7 months agoPost 12
Dr.Ben

rrMaster

Richmond, VA, USA

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Then change the ball links too. Mate whatever longer balls that work with a 2.5-3mm pushrod of the correct length and the ball links that fit them. Think outside of the SAB family in situations like this. There are plenty of links out there strong enough for your application and all will have 3mm thread to go into the swash. The only limiting factor on this idea is if they will clear the "ears" of the OUTER ring of the swash.

Ben Minor

Peak Aircraft/Team Minicopter Team Futaba Team Kontronik USA

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11-27-2017 01:29 PM  7 months agoPost 13
NIKOS PAPISTAS

rrApprentice

KOZANI-GREECE

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I finished with setup.
He give me 9.5 deg in cyclic into 74% swash rate in 750.
Everything is level right now.
He need only a little of pitch neutral (-20%) to come the swash level.Ail-elev it’s 0 in neutral position.
I hate to level the swash from 750.I like to do from horns-lingage and leave the program from Cgy in 0 (ail-elev-pitch neutral from swash basic menu) but in Sab models this is not work to put the horn level so the only way is electronically.
Ben it’s problem the 74% in swash rate menu?

Hirobo SDX D3 Fbl - ALIGN T-REX 700 F3C V3 FL HEAD-ALIGN T-REX 500 DFC

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03-25-2018 08:04 PM  3 months agoPost 14
ian694

rrNovice

United Kingdom

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Hi Nikos,

How are you getting on with your Urukay and CGY750 now?

I'm just trying the same thing and experiencing the same issues as you did.

Kind regards

Ian

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03-25-2018 08:36 PM  3 months agoPost 15
NIKOS PAPISTAS

rrApprentice

KOZANI-GREECE

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Hi.Like I said in previous post.....for swash level go into 750 in swash menu.He flying very well but don’t like eagle 3

Hirobo SDX D3 Fbl - ALIGN T-REX 700 F3C V3 FL HEAD-ALIGN T-REX 500 DFC

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