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Goblin Fireball 280 (Havok) shaking
https://www.spirit-system.com/phpBB3/viewtopic.php?f=20&t=4952		 Page 1 of 2
Author:  onit12 [ Fri 29. Oct 2021 16:18:26 ]
Post subject:  Goblin Fireball 280 (Havok) shaking
Hi,

i have a newly built Goblin Fireball 280 Havok with all stock components, except YGE ESC.
Problem is a very strong tail shaking, right after liftoff which is getting more and more till the whole Heli is shaking.
- Tail is running smoothly, checked that 3 times
- Tried with SpiritRS and new bought Spirit GTR, settings are "Goblin 280" from the Spirit First setup wizard. I also tried with rudder delay at 0 (viewtopic.php?f=20&t=2147&p=25120&hilit=goblin+fireball#p25120) but nothing changes.

Anybody a tip?

Thanks
Tino
Author:  Mattes61 [ Sat 30. Oct 2021 18:49:16 ]
Post subject:  Re: Goblin Fireball 280 (Havok) shaking
Hello,
I think you should reduce your headgain (cyclic) about 5 points - I had the same problem and at first I thought its a tail problem but it wasn't -
If you look exactly you would see a shaking in elevator and ail axis and therefore reduce headgain -

BR
Mattes61
Author:  onit12 [ Sat 06. Nov 2021 15:33:45 ]
Post subject:  Re: Goblin Fireball 280 (Havok) shaking
Mattes61 wrote:
Hello,
I think you should reduce your headgain (cyclic) about 5 points - I had the same problem and at first I thought its a tail problem but it wasn't -
If you look exactly you would see a shaking in elevator and ail axis and therefore reduce headgain -

BR
Mattes61


Hi Mattes,
tried this today, the shaking is better, but I have a continuously tail wag (left and right), which is getting better the higher the RPM.
I also went through the whole Spirit Tuning Guide, but nothing seems to makes it better.

Thanks
Tino
Author:  Mattes61 [ Sat 06. Nov 2021 17:17:10 ]
Post subject:  Re: Goblin Fireball 280 (Havok) shaking
Hi Tino,
my tailgain is not very high, I can say it only on spektrum stettings -
In Normal Mode: 47 %
In Stunt 1: 42 %
In Stunt 2: 40 %

I can not say rpms but percentige in the radio (Spektrum)

Normal Mode: 60%
In Stunt 1: 68 %
In Stunt 2: 75 %

Its not very high rpm, I know, but for my flying style good enough -

I hope this will help you -

Best regards
Matthias
Author:  onit12 [ Sat 06. Nov 2021 17:27:18 ]
Post subject:  Re: Goblin Fireball 280 (Havok) shaking
Hi Matthias,

thanks for your settings, could you eventually share your spirit settings? Saved 4ds File?

Would be great.
Tino
Author:  Mattes61 [ Sat 06. Nov 2021 18:26:25 ]
Post subject:  Re: Goblin Fireball 280 (Havok) shaking
Hi Tino,

here you get my settings from the Goblin Fireball -

I hope that will work for you -

Best regards
Matthias

Attachments:
Spirit_PRO_Goblin-Fireball_Bank2_040721_Sett.4ds [255 Bytes]
Downloaded 29 times
Spirit_PRO_Goblin-Fireball_Bank1_040721_Sett.4ds [255 Bytes]
Downloaded 33 times
Spirit_PRO_Goblin-Fireball_Bank0_040721_Sett.4ds [255 Bytes]
Downloaded 35 times
Author:  onit12 [ Sat 06. Nov 2021 18:37:35 ]
Post subject:  Re: Goblin Fireball 280 (Havok) shaking
Thank you very much :D
Author:  Pking [ Mon 08. Nov 2021 16:19:22 ]
Post subject:  Goblin Fireball 280 (Havok) shaking
Mattes61 wrote:
Hi Tino,
my tailgain is not very high, I can say it only on spektrum stettings -
In Normal Mode: 47 %
In Stunt 1: 42 %
In Stunt 2: 40 %

I can not say rpms but percentige in the radio (Spektrum)

Normal Mode: 60%
In Stunt 1: 68 %
In Stunt 2: 75 %

Its not very high rpm, I know, but for my flying style good enough -

I hope this will help you -

Best regards
Matthias
first I should ask you to excuse me for jumping in you thread with a additional question..

Hi Mattes61,

How did you configure in Spektrum the tail gain so they change when you go from normal to stunt 1 and 2 ?


Envoyé de mon iPad en utilisant Tapatalk
Author:  Mattes61 [ Mon 08. Nov 2021 18:20:23 ]
Post subject:  Re: Goblin Fireball 280 (Havok) shaking
Hi Pking,
this is very simple - If you choose in FM-Gyro an switch named flightmode.

In systemsetup you have an flight mode setup then you can define an dedicaded switch 1 only, in my case "switch A" and for the Hold Mode "switch H" -

In the Flight Mode Setup you have now a defined switch for flight modes and for Hold - Check here whether the switching states change as expected, if this is not the case, then the checkbox must be set to "1" -

Have you done that you can go back to Gyro - In Gyro you an set now for each flight mode an appropriate value.

You can also use the flight mode for an different pitch curve, expo or rotational speed (in %, for example 65, 75, 82)

I hope this will hepl you !

Best Regards
Matthias
Author:  TheSteve [ Sat 13. Nov 2021 1:50:03 ]
Post subject:  Re: Goblin Fireball 280 (Havok) shaking
No matter the FBL used the Fireball requires reasonably low tail gain. With a Spektrum TX I'd start at 30.
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