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NEX E6-550 › JR E6 550, tail rotor wagging
12-10-2017 12:28 PM  10 months agoPost 1
DennisH

rrApprentice

Baton Rouge Louisiana USA

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I lost my settings on an old radio. I just set up my replacement JR 9503 and tried the JR E550 out. I started out with a new model as I don't have a clue what the settings were on the radio that crashed.

Everything works great, EXCEPT the tail rotor "WAG'S". It sports a AR7200BX.

It's like the AR7200 is over correcting the tail rotor. On the ground, I can wind it up and get the wobble out by just correcting the tail a little, but as soon as it's off the ground, it instantly comes back.

Main rotor speed is set at 1800 rpm's, which has been perfect for me. Removing ALL blades, main and rotor, spins up perfect, no wag. I also put the main blades on and carefully spun it up, no problems. The heli was secured on the pad.

The main rotor and servo's are perfect. It's never performed like this, and no crashes are involved, so it's got to be in a setting in the radio? It flew perfect until the old radio died.

Just to be clear, it flew perfectly. My old JR9503 radio died. I bought a new one and started with a new model during setup. Now I have this problem, it has to be in the radio settings somewhere.

Any help will be appreciated, meantime I will be looking into the issue further.

Thanks, Dennis

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12-10-2017 01:01 PM  10 months agoPost 2
doorman

rrProfessor

Sherwood, Arkansas

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TAIL GAIN???
Confirm your gain setting for the tail..sounds to be too high,. I usually start at 75% and dial up or down from there.,
Good luck

Stan

AMA 2918-Team Spin Blades,,Castle Creations, Unique Aircraft

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12-10-2017 01:03 PM  10 months agoPost 3
doorman

rrProfessor

Sherwood, Arkansas

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Gear Channel??
Also, is your tail gain set up on channel 5???
Lower both up and down to 75% and try that!!!

Stan

AMA 2918-Team Spin Blades,,Castle Creations, Unique Aircraft

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12-10-2017 08:45 PM  10 months agoPost 4
JuanRodriguez

rrProfessor

The Villages, Florida

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DennisH
The heli was secured on the pad.
Sorry I don't have any suggestions on the "wag" issue but I think most would agree that the above practice is dangerous. It would be better for you to just hover the heli as you sort out the issues....

Been there, done that and old enough to know better.....

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12-11-2017 12:20 PM  10 months agoPost 5
doorman

rrProfessor

Sherwood, Arkansas

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Any News??
First, I do agree with Juan about not tying the heli down.. it can cause a resonance that could destroy your heli.
Where you able to locate the problem??
Thought of one other thing to look at:
Check to see if your tx has gyro program turned on?? If it is on, you would not be able to adjust travel on the gear (5) channel, and would have to adjust it in that program...
Stan

AMA 2918-Team Spin Blades,,Castle Creations, Unique Aircraft

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12-14-2017 09:42 AM  10 months agoPost 6
DennisH

rrApprentice

Baton Rouge Louisiana USA

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When I stated secure, the landing gear would have to break. I realize this could happen, but it was a very smooth test.

I believe it's in the Gain Settings, or maybe EXPO will help, +/- adjustments.

It's a simple task with Skookums 720's, I have set up several of these with somewhat ease. A couple set ups were perfect from the start. I have a few extra's.

I am thinking about putting a Skookum on this Heli as I want a smaller Heli to practice with. I tried with a 450, but vibration was a big issue. On my 600 & 700's, no vibration issues at all.

Dennis

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12-14-2017 01:32 PM  10 months agoPost 7
JuanRodriguez

rrProfessor

The Villages, Florida

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Watch at YouTube

Been there, done that and old enough to know better.....

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01-02-2018 02:05 AM  9 months agoPost 8
DennisH

rrApprentice

Baton Rouge Louisiana USA

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I ran across another "Ron Lund" video.

Per his instructions, I set the Gyro to "AUTO",

Then set the gains. Ron was almost on the money, I tweaked two settings less than 10% and now I have my Heli back!

I did not touch any other settings.

It's flying so good I am not going to change the EXPO settings like he recommends. If it works, leave it alone.

FINALLY!

I stated I wasn't going to adjust the EXPO, but . . .

Just everyone's opinion, on the JR9503, would you experiment with the EXPO settings? Or do you have a preference?

I am NOT a 3D flyer, RPM is set to 1,800, everything so far fits my style.

My tail rotor is super steady now, but it is just a little touchy R/L/R. I would like to tone it down just a little.

This is not bothering me too much, plus I have not gone higher than 7ft, there seems to be just a little hop up and down, but it's almost not enough to worry about. It could be the 1,800 head speed.

I am going to get it past 10ft high and see how steady it is. Before you could let off the sticks and it would hover almost perfectly in calm weather.

Now I should be able to get my 700 flying which has the same Gyro, AR7200. I am pretty new to setting up Gyro's, so it's been a learning experience for me. Gyro was the last thing I was thinking until I decided to watch the Ron Lund Video about Gyro's.

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01-02-2018 03:43 AM  9 months agoPost 9
doorman

rrProfessor

Sherwood, Arkansas

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Expo...
Go ahead and add about +20% expo to your rudder... give it a try.. if too soft reduce by 5% at a time.. if it is better, but still a little quick, add 5%.. there is no right or wrong amount of expo.. the correct amount is what makes you comfortable..
Your in the right direction, now is just a bit of fine tuning..

Good luck,
Stan

AMA 2918-Team Spin Blades,,Castle Creations, Unique Aircraft

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01-02-2018 10:37 AM  9 months agoPost 10
DennisH

rrApprentice

Baton Rouge Louisiana USA

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Stan, what about the elevator and aileron EXPO?

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01-02-2018 01:46 PM  9 months agoPost 11
JuanRodriguez

rrProfessor

The Villages, Florida

My Posts: All  Forum  Topic

I’ve always run 25-30. % expo on both helis and planks ....sure does help smooth out the flying, specially the hover.... adding expo may help control your up/down issue you describe while hovering.....

Alternatively, you can flatten out your pitch curve around your hovering stick position which essentially does the same as adding expo....

PS- while hovering at 7 feet you are well out of “ground effect” which is at about 3 feet or lower.....
So you shouldn’t see any difference at 10 ft vs 7 ft

Been there, done that and old enough to know better.....

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01-02-2018 03:28 PM  9 months agoPost 12
doorman

rrProfessor

Sherwood, Arkansas

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EXPO
Yes, you can add it to all 3 controls.

Use the same amounts that I suggested earlier on Ail and Ele

Usually, I have a bit more on elev, and pretty low on Ail...

As for the other, I agree with Juans post about flattening the pitch curve around the hover position...

Stan

AMA 2918-Team Spin Blades,,Castle Creations, Unique Aircraft

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01-02-2018 10:10 PM  9 months agoPost 13
DennisH

rrApprentice

Baton Rouge Louisiana USA

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I WAS GOING TO FLY TODAY, BUT

I stepped outside into 30deg temps, in less than 30 seconds I was back inside.

I hope it gets a little warmer so I can fine tune it.

Thanks for the opinions, I think I remember all the EXPO setting were around 30% +. It's easy to change, so I will see.

Thanks, Dennis

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01-07-2018 04:26 AM  9 months agoPost 14
DennisH

rrApprentice

Baton Rouge Louisiana USA

My Posts: All  Forum  Topic

Doorman, you were on the money. It just took me seeing a video to make since. I have changed the EXPO. Maybe tomorrow will be a good day to try it out.

I had no idea you have to turn the Gyro to Auto when setting up new models.

Thanks for all the input. I learned a lot.

Dennis

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NEX E6-550 › JR E6 550, tail rotor wagging
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