"Hi,
Thank you for your help. I have bought a new Bix3 and will try this.

Jakub Mędrzycki said:
http://flitetest.com/articles/pixhawk-fbw-a-autotune-lethargic-reso..."

"One additional remark: the Arduplane seemed to respond sluggish to keeop the plane level. When I had the plane in my hand before flight I noticed the sluggish movement of the servos like the Ardupilot was giving just a little bit of input."

"For some reason I can't get it to work. I may have found an explanation. When I turn the APM 2.6 itself the compass turns from south to north or whatever I point it to. So it seems the APM has an on board compass.

I assume it would cause problems…"

"It is very strange. No matter what yaw I set it to it still keeps pointing in the wrong direction. I give the APM a power cycle after I set the yaw of the compass."

"For some reason I thought this was a live adjustment. I was wrong.

When I am able to work on my plane again I will check this. This should fix it I think.

By the way, +90 degrees yaw should do the trick? I will check this out.

Thanks for your…"

"Thanks Randy for the link. Honestly I had already seen that. For some reason none of the orientations works good enough.

The direction is correct i.e. move the plane left, the compass goes left and vice versa. But when I point the nose of the plane…"

"Hi Ron,

That was it! Thanks. Now I have to do refinements because the heli drifts very slowly backwards. Lets say 7 o' clock. I think I have to make mechanical adjustments to the swash rods. Make the elevator a bit longer so the bird will not be…"

"Hi Rob,

Thanks for your excellent reply. I will try that. I got these settings from the internet because it has not flown yet :-(

Hopefully these settings make the bird fly so I can start from there.

I must say the HK450 is my first helicopter…"

"Never thought of the params file. I have attached it. Please see if this helps.testusers-hk450.param"

"Looking good!
If you use this (link) anti vibration set it will fit nicely between the legs of the landing gear. The narrow top part of the set fits nicely. Use tie rips to tie it down. Also it helps reduce vibrations :-)

Remember to mount the APM…"

"Hi Chadel P,

It is very difficult to see because my machine is crammed with electronics. Hopefully these images give some clarification.

HTHIMG_61300.jpg"

"It seems the APM tilts the swash to the wrong direction when I tilt the heli. So I have changed the servo settings in MP and reversed the channel in the radio. Now it does not flip over when trying to take off.

However, I cannot take of fully…"