Hi, I was hoping you experts could help me troubleshoot a problem with my quad I've just encountered.
I'm testing out the lab's quadrotor with the 880 motors and 20A 3D Robotics ESCs. I've managed to tune most of the settings to my satisfaction, it is responsive in flight without being wobbly and can alt hold to about a meter without sonar.
My problem is that after about 5 minutes or more of flying, the rear arm will dip and the quad will basically fall out of the sky tilting backwards. I've crashed a few times like this. It is always the rear arm. I am not using bullet connections, my connections are soldered. My suspicion is that either the rear motor or ESC is going bad. I'm going to replace them, but can anyone shed more light on this problem?
Replies
I don't think it was the cutoff voltage. The battery was not near empty when I was flying, I even changed batteries because I was afraid low battery might be causing my problems.
If cutoff voltage is the only other idea, I think I'll just replace the motor and ESC and see what that gets me.
Thanks for your insightful answers, I'll report back when I've test flown.
The simplest way of testing if it is the cutoff voltage is to set the battery type to NiMh rather than LiPo which will basically disable the LiPo protection in the ESC. Time your flights so as not to kill your battery though.
What voltage was your battery at when it crashed?
How well is the battery handling the loads?