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Anti torque does not hold in reverse

Posted: Mon 29. Jul 2019 18:06:05
by passe partout
Hello, during fast walks back with my 450 trex, the anti torque does not hold the axis he picks up suddenly, what setting I have to do.
The gain seems good to me before it is stable and do not oscillations.
I speak in flight by not moving forward
Thank you

Re: Anti torque does not hold in reverse

Posted: Tue 30. Jul 2019 11:08:47
by ZeXx86
Hello,

I am not sure if I understand correctly, but it is possible that you are talking about Fast forward flight and sudden elevator movement (usually up).
This is caused due to small Cyclic Ring and/or too high Collective Pitch. Please increase Aileron/Elevator Range in the Limits tab or decrease Collective Pitch range. Then all should be fine.

Re: Anti torque does not hold in reverse

Posted: Tue 30. Jul 2019 11:56:19
by passe partout
Hi Thomas, in fast reverse, the anti couple picks up and the helicopter turns quickly.
I use a translator it's not easy; O))

Si qqun veut traduire:
Lors des marches arrières rapides l’anti-couple décroche violemment et l'hélicoptère fait un demi tour rapide pour se remettre dans l'axe de vol.
Merci

Re: Anti torque does not hold in reverse

Posted: Wed 31. Jul 2019 10:37:43
by passe partout
The anti-torque does not hold in reverse it violently unhooks

Re: Anti torque does not hold in reverse

Posted: Wed 31. Jul 2019 12:37:30
by ZeXx86
Oh, I dont know what Anti-Torque is :-(
Can you explain in other words please?

Is it Aileron, Elevator, Rudder?

Re: Anti torque does not hold in reverse

Posted: Wed 31. Jul 2019 12:43:15
by passe partout
rudder

Re: Anti torque does not hold in reverse

Posted: Wed 31. Jul 2019 12:49:41
by ZeXx86
Now I understand.

Please check Limits/Rudder End-points. It must be configured in the full extent, especially closer to the boom.

Next important thing is to set RPM high enough, because with a small headspeed rudder efficiency can be too low.

Re: Anti torque does not hold in reverse

Posted: Wed 31. Jul 2019 12:54:33
by passe partout
ZeXx86 wrote:Now I understand.

Please check Limits/Rudder End-points. It must be configured in the full extent, especially closer to the boom. MAXI

Next important thing is to set RPM high enough, because with a small headspeed rudder efficiency can be too low. MAXI

Re: Anti torque does not hold in reverse

Posted: Thu 01. Aug 2019 19:49:17
by passe partout
I think I have a better flight with the setting "Pirouette consistency" increased from 160 to 177.
Cdlt