Steve Sorry about the slow response to answer but I have been working on the other end at the engine. The cable in my set up travels 1.75" from end to end and actuates the ailerons fully. My dual stick arrangement is the dual stick assembly bought from Brian Kraut that is a Rand Robinson from another KR2. The only mods to my system is direct pushtube to the lower attachment on the stick center (where the lower cable would go), and the shortening of the cables to be able to attach to the dual sticks.
I did run into a lack of deflection problem early on with either single or dual stick arrangement, and Larry Flesner pointed out that he had to re-drill his bellcrank closer to the center pivot bolt on the aileron bellcrank. I followed his lead on that one, and drilled mine 1/2" closer also and then reshaped the part for clearance. I also followed a recommendation from Dan Heath about making sure the push rod to the aileron horn was level, so I added a spacer to the bellcrank hook up point to bring the push rod level in its movement while actuating the aileron. These two changes combined corrected my deflection issues, and I have full deflection now, and it flies great. I have 35 hours of flight time on the changes, so I know they work good. For the same amount of stick deflection, more movement at the control surface is achieved by reducing the radius of motion, or simply making the attach point closer to the hinge. Good luck.... Colin Rainey brokerpilot9...@earthlink.net EarthLink Revolves Around You.