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I'm suffering for jitter

Posted: Sun 12. Dec 2021 11:14:11
by JaeIn Go
hello,
I'm operating Spirit GT with Goblin raw 700 and goblin raw KSE.
and now I'm undergoing a serious problem so I don't fly my goblin raw 700.

First, I installed my goblin raw KSE. there was some jitter at flying(when I try hovering)
and I solved a jitter by replacing the receiver cable.

Second, I'm suffering from jitter when flying goblin raw 700(when I try pirouette or flip)
To solve the jitter, I replace the receiver cable and another ESC.
but still remain serious jitter( cut off ESC).

this is my heli spec.
futaba s-bus
hobbywing 200a SBEC

Re: I'm suffering for jitter

Posted: Sun 12. Dec 2021 16:42:47
by Trek nut
hello !
can t speak for all but my buddy had same problem . it is not Spirit but rather be your Radio , it would jitter even just sitting there , he then got a DS 12 from Spirit and no more problem . Now we are using his old Futaba when we go fishing ....for weight. :D

Re: I'm suffering for jitter

Posted: Mon 13. Dec 2021 8:28:54
by ZeXx86
Hello,

can you please describe what jitter you can observe?
There are many kind of jittering. Can you tell at which axis?
Can you share your settings?

It could be caused for example by a mounting issue or a free cables that are bouncing to the unit.
It could be also caused by static discharges. Without a description I can't help more unfortuantely.

Re: I'm suffering for jitter

Posted: Mon 13. Dec 2021 11:09:26
by JaeIn Go
Thank you for your reply.
Let's describe it as best I can.

hovering and slow-flying were flying very well.

but when goblin raw was performed fast pirouette. ESC was temporary cut off and the nose went down.
additional, same jitter was observed at flip.

MY goblin raw 700 setting

hobbywing 200a SBEC 8V, store governer mode, Xnova motor

MKS X8 servo, fubata 16sz, 7008sb receiver s-bus.

before install Spirit GT I can fly 3d very well with neuron flybarless system.

only I changed flybarless system.

all cables were fixed by ties.

I installed three spirit GT on Goblin raw KSE, old goblin 700 and goblin raw 700.

KSE and old goblin 700 are flying very well. and perfect auto rescue.

ZeXx86 wrote:Hello,

can you please describe what jitter you can observe?
There are many kind of jittering. Can you tell at which axis?
Can you share your settings?

It could be caused for example by a mounting issue or a free cables that are bouncing to the unit.
It could be also caused by static discharges. Without a description I can't help more unfortuantely.

Re: I'm suffering for jitter

Posted: Mon 13. Dec 2021 11:15:54
by ZeXx86
Can you please share your settings file?
I can view your settings and let you know what to change.

By jittering do you mean oscillations? Or is rather jittering random?

From your description it look like there are tail oscillations during demanding maneuver, is this correct?

Please make sure to use S.BUS (1) port from the receiver if you are not using a telemetry.

ESC shutdown should never happen normally, so it is important to find the reason otherwise model will crash sooner or later.