Originally Posted by Adamska27

Actually depending on the sealed motor involved an hour could be correct, especially if you're not water dipping it and you're on low voltage and especially tamiya style sealed cans like to wear the brushes down a lot.

See, the brush is mounted to a spring style arm, so the longer you break it in on a motor like that, the less spring tension you get. I don't recommend wearing the brushes down that far on a 12T titan, but I would do that to a Tamiya kit motor (eurotruck or tt02 style). The reasoning for that is on a mabuchi style motor there is just plain no torque regardless, so you need all the rpm you can get, the titan 12T obviously is a whole different animal on that front.

So, yes, there is a very good, physics based reason to break in a sealed motor for a long time. I spent the late 90's and early 00's working with these things on fantom dynos.

No one pay any attention to "korokoro" - he obviously has no experience in this matter or has absolutely no scientific method to his racing program