Yes, for turning, or for proportional speed. I have a short vid from a while ago of my Bismarck in the bath while I was doing some testing... ([link=http://members.iinet.net.au/~wackywheelz/rc_bismarck.wmv]video[/link] | [link=http://members.iinet.net.au/~wackywheelz/rc_bismarck.jpg]pic[/link])

No aerial or workable rudder was installed at the time (out of servos), so it was just proportional single-motor tests. Also, I had just poked the wiring into the battery plug, and it came loose towards then end then slipped out totally at the end of the video.