anybody else have problems with position hold not holding at all. Always want to go left and backwards. swash level,flys fine with position hold off. thks

Hello,

first from all you have to check that when you tick Servos/Subtrim (tuning) all servo arms will be really centered.

Then make sure that swashplate is really level at the same time. And then make sure that there is 0° between main blades.

If all this is OK, please engage Stabilisation (Normal), (Acro) or Coaxial. Then check that when it is engaged, helicopter will not tilt anywhere.
It should be level and stable.

If all this is OK, Position Hold should work perfectly.

If model is going somewhere else or in a circles with Position Hold/RTH/GeoFence, then compass calibration is not OK. Or value for Compass Heading Correction is not 0°.

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Spirit System developer

Hi T well I took the geo off the 600 and put it on the 450 . recalibrated and checked all Heli flys stable off the bat. Engaged geo to stabilize and take off ,it does the same as 600 wont hold on new position only to where I took off from ?? compas is within 1 degree. horizontal 90 verticle 90. Is there anything else I can do. Thks John T

If you are on 3.1 have you set the 4th Tx position on RTH? Perhaps you think the Geolink is setting the home position when it powers up where in fact the Geolink is remembering the manually set position?

Im on 3.1 and 1.2 and no I only have pos hold activated. Only flying 3 ft in altitude.sometimes I need full colective to fight heli going back to original lift off postion. longer I fly the harder it trys to go back. Im also under support named (GEO).

Sorry, I misread your original post. But it's odd it wants to try and go back to the take off point.....(that's where I probably thought of RTH not pos hold!)

Can you please share your settings file?

This would be helpful

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Spirit System developer