ORIGINAL: Rotor13B
ORIGINAL: harebearva
By heatshrink, do you mean the heatshrink from the barrel connector on the motor lead?
Yes, The solder connections are some times "cold welded" and don't make a sufficient bond to the connectors which will over time fatique and break. Some people have had this problem from the get go, Others it didn't show up for a month or so.
How about the solder joint on the ESC?
What do you think about the + and - being so close on the ESC?