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Fast Lad Performance . Ace Hobby . Esprit Model

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JR Heli Vibe - Airskipper - Sylphide - Venture > Vibe 50 and JR 770
 
 
Sun Nuclear
Senior Heliman
Location: Plymouth Minnesota

Is anyone else running a 770 gyro and if so how far out on the arm are you?

I'm at 17mm on the arm and am at 60 on my gain on a 9303. I was wondering what would happen if I moved the ball in a hole. Would I have to turn my gain up to compensate and how do you determine where the ideal gain setting to arm length is? Is a higher gain harder on the servo?

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JR Vibe 50
08-13-2008 03:02 AM
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Airship1
Senior Heliman
Location: Arizona

I run mine at 11mm. 9303 2.4 and 8900G servo on a Spektrum regulator. Holds like a rock!

Vibe 50-1, Vibe 50-2, T-Rex 700, Vibe 90
08-13-2008 03:25 AM
 
 
Sun Nuclear
Senior Heliman
Location: Plymouth Minnesota

Whats your gain setting, the number on the radio, not the actual gain.

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JR Vibe 50
08-13-2008 03:33 AM
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Airship1
Senior Heliman
Location: Arizona

Gain is at 21.
ATV Rudder
Set up with end point adjustment pot
100R
100L
After set increased ATV's to
110L
110R

Vibe 50-1, Vibe 50-2, T-Rex 700, Vibe 90
08-13-2008 04:25 AM
 
 
Sun Nuclear
Senior Heliman
Location: Plymouth Minnesota

Ok, I'll try it.

What I was really getting to was when you move the ball in on the arm the servo has to move more to make up the difference. I assume I have to turn the gain up to make up for that but how do I know when its just right, by the way the tail holds or is there a gain value I don't want to go over?

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JR Vibe 50
08-13-2008 01:43 PM
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w12martin
Senior Heliman
Location: Matsuyama, Ehime, Japan

Why do you want to change the horn lenght? Usually if the tail bounce after a piro, decreasing the lenght in 1 or two holes will help! If you do that, certainly you should have to increase the gain, the movement will be slowed a bit, the feeling will be not so responsive and also you will have to change the end points.
In my Raptor 90 I'm using 14mm and T-Rex 600NSP 11 or 12 mm.
08-14-2008 01:51 AM
 
 
Sun Nuclear
Senior Heliman
Location: Plymouth Minnesota

I'm just trying to learn more about setting up gyro's in general. I probably should have posted this in the main section because the type of gyro and heli really doesn't matter.

Thanks for the info martin, thats basically what I was looking for.

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JR Vibe 50
08-14-2008 01:59 AM
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w12martin
Senior Heliman
Location: Matsuyama, Ehime, Japan

you're welcome!!
Just one more thing...
The performance with this gyro in my two helis is very different!
In my R90 its performance is really good!! Very happy, but I couldn't get good settings for my T-Rex! Maybe I need to sepnd more time working on it! Anyway I changed the T-Rex's 770T for a Solid G and I will test my heli soon to find out some differences...
08-14-2008 03:04 AM
 
 
Sun Nuclear
Senior Heliman
Location: Plymouth Minnesota

One more question, if you keep moving the ball in on the arm and turning the gain up to compensate how do you know when you've gone too far? I assume the higher the gain the harder it is on your tail servo, right???

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JR Vibe 50
08-14-2008 03:24 AM
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w12martin
Senior Heliman
Location: Matsuyama, Ehime, Japan

I think the first symptom you'll notice when you shorten the horn lenght regardless of the gain, is the gyro will not hold the tail in hard manouvers... so you have to find the proper lenght according with your needs.
If there is others symptoms, also I would like to now since I didn't try too many different lenghts!
08-14-2008 03:36 AM
 
 
Airship1
Senior Heliman
Location: Arizona

Quote: I think the first symptom you'll notice when you shorten the horn lenght regardless of the gain, is the gyro will not hold the tail in hard manouvers...

Your thinking is so wrong! I have 4 of these gyros on my helicopters Every one of them is at 11mm out on the arm. It varies from 21 to 18 on the gain. I have had multiple people fly my ships and they have Never blown out the tail in hard manouvers, tail slides, backwards hurricane, ect...
If your were to read the intructions on the gyro it diagrams the ball at 11mm. But it says to put your ATV's at 150 but ya really don't want to do that! Set it to 100 and then up your ATV 110 if you want more tail responce.

Quote: If there is others symptoms, also I would like to now since I didn't try too many different lenghts!

If you have not tried different lenghts how do you know it won't hold??? Kinda contradicting yourself sir!

Vibe 50-1, Vibe 50-2, T-Rex 700, Vibe 90
08-14-2008 05:14 AM
 
 
w12martin
Senior Heliman
Location: Matsuyama, Ehime, Japan

Airship1: Thanks for your comments.
SunNuclear asked: "how do you know when you've gone too far?"
and not "what happen only if you move the ball in on the arm "
If you read my settings, I've posted before, you will find that I'm using 11 mm on my T-Rex, however using 9mm during fast backward the gyro combo can't hold the tail.
That is my experience. What is your experience using lenghts less than 11mm? I also want to learn as well as SunNuclear.
Thank you.
08-14-2008 05:32 AM
 
 
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JR Heli Vibe - Airskipper - Sylphide - Venture > Vibe 50 and JR 770
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