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Any thoughts ?

Update ! On further testing I have got it flying a bit better now with the gains at Basic 300 300 ! atti 80 80 yaw 150 vertical 160 main I 80% it seems a lot better even in a slightly turbulent wind. The 5.16 software is much less susceptible to high gain oscillations than the...

Hi Lanzar Thank you for your advice I have switched back to 5.16 software , re-checked motor alignment with a spirit level, CG ok , I am testing with 2.6 kgs on the AV 200 . What do you call low basic gains ? and atti gains . I have the atti set to 80 and basic to 200 . it is only about 5%...

Umm does anyone read this forum at all ? lol

Does nobody have any ideas at all ?? Kopterworx?

Yes !

Anybody has any ideas ?

Hi Kopterworx , I figure you are the renowned experts on co-axial 8's Pleeese can you help ? I have an X8 which is very wobbly, there is something wrong with the combination of parts or set up but I can't find it. It is best with the APC's less good with the carbon 15 x 5.5's and really bad...

Do you have any pictures showing the GPS location? I have almost the same x8 , AV 200, Wookong . I am having a big problem to get stable video with the tarot stabilization on the av 200 !

I agree with this statement as vibration is all about harmonics and frequency so changing the firmness of a mounting pad could help , I will try that next on the X 8 which is the machine I have the stability problem with not the S 800 Evo.

Sorry for late response , the DJI S 800 running dual batteries , Zenmuse Z15, Sony Nex 5/7 with downlink iosd etc is over 7kgs and it flies !

Thanks for that tip I will try doing the same , can you tell me what sort of mounting pad you used ?

After further testing it seems that it flies perfectly in totally still air , but as soon as there is any wind it can't handle it ? The wobble comes back , obviously some correction is expected in moving air but this is a distinct wobble ! Lowering the I gain helps , but I feel that is just...

Thanks, yes I have totally stripped the complete machine and checked all motors bolts props , IMU mounting etc etc

Thanks for your time ,Yes all the props are 15 x 5 carbon from a non evo S800. as for the weight my S800 evo weighs over 7 kgs fully loaded for flight !

It weighs 5.1 kgs without camera inc battery, no it does not seem to make much difference with or without weight on the gimbal. The props are balnaced and the motors are new never crashed and all sound and feel smooth.I have played with the gains extensively but figure they are at about the...

Sorry maybe I did not explain well enough , the arms are not telescoping they are double skin carbon epoxied together held in aluminum clamps. The main flex was in the center plates and the clamp design before. It is VERY ridged now and was not before. All is balanced very well but I will...

Any ideas ?? Every other multi rotor I have flies much better than this !! The problem has all but stayed the same from the flat octo frame to this X 8 frame !

http://www.youtube.com/watch?v=19OEjrQmZvk&feature=c4-overview&list=UUUt_ZjaVSbqRPkzgqaD9-tA

Instability problem X8 Hi, I had a flat octo with a very bendy frame that flew very unstably so converted it to a co-axial 8. The wobbly problem has been improved only about 5% I have tried gains from 40 to 250 on atti and 100 to 400 on mains , the yaw is currently 125 and the vertical is 140...