Henseleit TDR 2 tail problem

[Joeribar]

Now I've tested it with the smaller tail blades and started with a tail gain of 55 in stead of 40, and I have tail hunting like hell or tail wagg no idea . I've tried it at 45 and still the same. I tried it on 80 and also still tail hunting or tail wagg.

With the 116mm the tail was not perfect only started hunting on faster speeds but with this it already does it at hoover

Also tested at 100 tail gain and still does it I don't now if it's tail wag or tail hunting but I think tail wag because with the 116mm tail blades it's gone

If I look to the vibrations on my vbar neo on the bench there is no big problem the max 125Hz

[ame="https://youtu.be/mOlrT8ZGP9I"]Henseleit TDR 2 Vbar NEO vibration log - YouTube[/ame]



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[xioxia]

Setscrew that is holding tailpulley is not too tight?
Bearings on tailblade grips fully inserted?
Thrust bearings correct installation?

[Joeribar]

I check those soon as I'm home but with the 116mm tail blades I don't have the same problems as with the 96s

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[Joeribar]

[ame="https://youtu.be/GlIieVfWb4o"]Tail servo TDR II - YouTube[/ame]

Watch how the tail servo goes at almost the and of its travel isn't that strange?

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[Joeribar]

There is a little play in the tail blade holders but that's normal right? Normaly are the bearings okay. And what set screw do you mean, maybe you can take a picture of it please?

Thanks!

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[Vinger]

The normal questions, correct servo frequency, you not in setup mode and at what gain setting was the video taken?

[Joeribar]

Hello

My servo is kst x20-1035 and the servo setting in the vbar neo is not correct because I can't find a servo in the list of the vbar with these settlings.

760us/560hz. How can I do that in the vbar? It's now on the Futaba bls 251 setting. So far as I know the vbar doesn't have the 560hz setting? Because they say more then 333hz isn't better

Not in setup mode and 80 tail gain.

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[Joeribar]

I've found something strange,

The tail Optimizer is turned on maybe turn that off?

I think I gonna reset the tail settings and turn of tail optimizer after work and test again or is that a bad idea?

[Vinger]

Originally Posted by Joeribar

Hello

My servo is kst x20-1035 and the servo setting in the vbar neo is not correct because I can't find a servo in the list of the vbar with these settlings.

760us/560hz. How can I do that in the vbar? It's now on the Futaba bls 251 setting. So far as I know the vbar doesn't have the 560hz setting? Because they say more then 333hz isn't better

Not in setup mode and 80 tail gain.

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Update rate is just a figure, the 333MHz that Mikado uses is perfect for all tail servos, and yes the BLS251 selection is correct for your servo. If you hover the mouse on the servo selection you will see more servo manufacturers.

I have only used Futuba BLS servos on my helis and they definitely do not show the movement I see in your video. On the bench the servo will move to nearly full travel as the tail is not following the demanded rate.

Tail optimizer will not change the movement on the bench it needs the helicopter to rotate to measure the performance and automatically adjust stop and rate behaviour.

[Joeribar]

Is found the problem of the tail servo moving that strange, when I go with the p gain under 80 it start doing that so I think better keep the p gain 80 and more?

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[Vinger]

Leave the tail settings at default values it works really well with the TDR2. I have only adjusted the overall gain.

[Joeribar]

And what tail gain are you using?

Best regards Joeri

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[frankie sed]

Had the same problem with my diablo and the answer ended up being the governor gain was too high.


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[Joeribar]

Hmn intresting! Thanks for the input!

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[Joeribar]

Video coming soon the TDR is almost perfect

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[Joeribar]

[ame="https://www.youtube.com/watch?v=nbw9wMU8T0k"]Henseleit TDR II second flight - YouTube[/ame]