Ron,
That's about the type of derailments I had, train kept moving with no ill effect.
I haven't had but 3-4 derailments, just have to make sure the switch is thrown when it's suppose to be. No harm to the circuit board, battery, or engine.
I toasted one of the circuit boards in an 1/16 RC tank I have and it worked for a while, but now the main gun doesn't elevate anymore. Pretty amazing since 2 components actually fell off the board
BPRC is no more problematic than DCS or TMCC, in my experience it has been rock steady. I read all the problems folks have with current command control systems and all the in-fighting and BS-slinging that seems to go along with it...I'm glad to be using the system I have
Real test is going to be moving from converted 3-rail (Gargraves/Ross) to 2-rail code 148 (Micro-Engineering), while keeping the hi-rail flanged wheels. So far my test have been successful but I won't be satisfied until I get the mainline down and trains running.