to set up for a large steering control on a model of that scale just like large r/c aircraft of 1/3 scale etc etc , you need to find a large size digital metal or titanium geared servo and buy 3 of them as these 3 servos will be needed to turn that size model . the servos will be mounted in - line via bellcrank conections as used with the large scale r/c aircraft . take a look at Desert Aircrafts website and you will see available set ups as i mentioned. only issue is when you go large you pay large.