Got my F450 flying now just need more pratice.
When I start the motors all run nice and sweet but just at the point of take off (ie just as the machine goes light on the ground)
the whole machine vibrates, as if the props where out of balance, which they are not.
As soon as the copter as left the ground the vibration stops.
Is this normal? or is there some other problem?

sounds like ground effect, you should be fine unless vibrations continue in the air.

I have this. It looks really funny and its caused by the flexing in the DJI white landing legs!

freddiebd@iclou Posted at 2014-12-7 22:20
I have this. It looks really funny and its caused by the flexing in the DJI white landing legs!

Checked it out and you are right it is the landing gear
Thanks