[placitassteam]

Dan, Mark pretty much says it , if you have grades especially with a small engine like the Ruby you need throttle and J-bar. I have 3 1/2% grades on my layout and find that on the down grades it works best to close the throttle as much as it will go and the controll the speed with the J-bar. I use the Spectrum radio but use heavy duty servos not the ones that come with it.