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Re: Velos 880 tail oscillation

Posted: Sat 11. Jun 2016 1:50:22
by mb-1953
Tomas,
There is a pilot, Hugo, that flies the velos 880 with spirit. Very talented guy. Would it be possible to share his file to help solve this problem?
Thanks.
Mike

Re: Velos 880 tail oscillation

Posted: Sat 11. Jun 2016 9:16:33
by sacha
I asked Hugo to share his config. He told me that he is not very happy with his initial tail configuration.

He is willing to share it after he optimized his config.
That was 2 months ago and with the 2blade tail.
I will ask him about his progress.

Sacha

Re: Velos 880 tail oscillation

Posted: Sat 11. Jun 2016 16:36:18
by mb-1953
I hope someone can suggest something else to try.

Re: Velos 880 tail oscillation

Posted: Sat 11. Jun 2016 17:23:40
by sacha
My tail oscillation on hovering is gone. After installing a new 3blade tail rotos. Thanks to Aris from Velos.
Very nice Service!

Re: Velos 880 tail oscillation

Posted: Sat 11. Jun 2016 19:27:16
by ZeXx86
Thank you for letting us know!

Regarding gyro gain, it is quite strange how it is low. For such big helicopter it should be at least 60% and rudder common gain around 1,3x.
Because of this, you can try to make servo arm shorter, this could improve performance and your gyro gain can go higher as well.

Re: Velos 880 tail oscillation

Posted: Sat 11. Jun 2016 20:33:55
by mb-1953
Thanks, Tomas. Will give it a try next and report back.
Sacha, glad you are in business.

Re: Velos 880 tail oscillation

Posted: Sat 11. Jun 2016 22:16:40
by sacha
I have a gyro gain of 90% without any problems.

Re: Velos 880 tail oscillation

Posted: Sun 12. Jun 2016 0:56:45
by mb-1953
I moved in the servo arm 1mm. I have the transmitter gyro gain set to 50%, in hover, solid as a rock. Ran out of daylight so that is as far as I will get today. Going on vacation for a week so I will have to be patient to try forward flight. I'm encouraged though.

Re: Velos 880 tail oscillation

Posted: Sat 27. Aug 2016 21:05:10
by mb-1953
Oscillation is gone