I am nnewbie and almost total noob in multicopters. Purchased APM the latest fully assembled with telemetry, GPS, barometer but without sonar yet. tried on DIY tricopter frame, have 10+ flights on stablize and alt hold. then reload Y6 on DIY frame. after painful crashes manage to fly it for 5 minutes using 4000mah 3S1P lipo. esc and motors barely warm but battery get hot. sometimes it melt the battery connector and cut off the power. using G15 turnigy motors, 70amp HK esc, and MAS 3 bladed prop 10*6. AUW 2.8kg. all the above using code 2.0.44 and below.
Scared to fly higher I decided, to take out 2 motors and DIY quad frame. motor to motor is 40cm. AUW is 2.2kg with 10x6 3 blade prop. Don't realy know what's wrong, I only manage to fly for about 2-5 seconds the most before the quad started to violently roll right and left and fliped. (loaded latest code 2.0.47 x quad. I had tuned the P's stab roll/pitch down to 2.0 but still same result.. now I am scared to fly higher than 3 feet off the ground. ESC been callibrated individually and code reloaded few times, radio recalibrated more than 5 times..
following are log (latest) 2011-10-08%2003-24-04.tlog