Is your avionics battery pack safe for three-flights? How about five? How can you figure out if it's safe to fly a sixth time before recharging the battery pack powering the radio system? The answer determines if you drive home happy at the end of the day, or not!

Q. I'm curious what receivers and other electrical components you use, and maybe how you linked them together. In other words, what you find works well with your servos. A. Radio system selection...

Q. Why do some brands of digital servos hum and squeal while others don't? And are the ones making so much noise also pulling more current? A. By the time they get to us, most modelers have...