I started out with a hexa kit from a spanish supplier. 950kV motors and 9x5 props. Pretty lightweight frame, approx 1,7 kg. Plenty of thrust for climb performance, or stopping a rapid descend. Unfortunately this copter got hit by a flag pole in my backyard, frame damaged beyond rapair...
So I bought a 3DR Quad kit from DIY. Took me some time before I had opportunity to testfly, but now when I am flying it - BOY, it is anything but ballistic... On full battery (Turnigy Nanotech 3300mAh, 35-70C) initially I get some useful climb, but pretty soon the climb is soo poor, well... I gotta be careful with the descents, otherwise I won´t be able to stop it before it hits the lawn (yes, that happened a few times...)
Must be something wrong here! Or...?
Using the standard 3DR set, the little ESC and motors, 10x4.5 props.
All up weight: 1438 grams.
All four ESC manually calibrated
On fresh battery, full throttle, measured with Turnigy power analyzer:
28 ampere, 11.7 volt (approx 330 W).
AC Log shows peak 30A and like 11volt (log file attached)
Holding it in my hand it provides positive climb force.
But as I said, after some minute flight, vertical performance is shit.
Is there an obvious explanation to this???