Melted ESC and Battery EC5's

[Grumpy]

90A is it's continious rating. Typically Castle ESC's will handle 150% of that for short bursts, so even if it did pull spikes of 115A that shouldnt be a problem. In any case just because you have a motor and battery capable of a certain power/current draw doesnt mean that you will ever 'see' that in practice. Neither is the components rating a 'hard stop' limit, if they were 'compromised' they could exceed those rating by a wide margin, albeit that they may be damaged in doing it.

As others have already said, it's a moot point anyway because the ESC didnt fail, the solder joints did.

[Peteski]

This thread is a good reminder that proper soldering really does matter! Even the little details like cleaning off excess flux etc can make all the difference.

[chrisleematt21]

This thread is a good reminder that proper soldering really does matter! Even the little details like cleaning off excess flux etc can make all the difference.

Personally I think it was the corrosion rather than poor soldering, but I will find out later!

[Peteski]

But things like flux residue could have caused corrosion if you didn't clean it off after soldering. However if you did clean the joint after soldering then you can rule that out as a possible cause.

[Grumpy]

The wires sometimes break just next to the solder joint due to fatigue from repeated bending. It's hard to see from the photos if the solder joint itself failed (bad soldering) or the failure occured in the wire next to the joint?

[Gixxer]

99% of the problems I've seen with high resistance joints with subsequent overheating problems have been caused by bad soldering.