Originally Posted by oldgrandpa
My 450 was flying great until I installed the GPS, Now it climbs when going forward in GPS at about a 10*angle, then looses altitude when flying backwards. I've tried nose heavy, perfect balance, tail heavy balance with same results. It will hover great even in heavy wind gusts. Any suggestions ??
Have you tired Calibrating the GPS/Compass?
I had a drift when switching into GPS mode but after i calibrated it if flew fine.
I also have noticed that if i take off and fly and switch to GPS straight away then it doesnt hold very well.
If i flyin Attitude mode for a short while then switch into GPS then i often find GPS holds better.
There maybe some strange auto trimming going on in there that the GPS requires.
Dunno but it works for me.