"So, once again for the hard of hearing...I have built my own version of a dual stick aileron control system based on the stock geometry. Stick pivot to cable eye is 2.5", as spec'd out in my plan book. What is unknown is whether or not my stick will allow enough movement side to side to move the cables enough to get the ailerons to move the prescribed amount. Not having a working STOCK system to work from, I was just asking if someone with STOCK stick assembly would measure how far the cable travels during aileron deflection from stop to stop so I can tell if my clearances are ok. That's all."
If you are looking for a standard length for the stick movement or the cable to connect the stick(s) to the fittings at the ends of the stub wings which in turn control the movement of the ailerons, that number does not exist. No Two KRs will be identical! Every one will be a "one off" creation and although the differences will be small, they could make trouble. Thus we often use "one off" techniques of building each part to mate where it attaches and do what is required. To check the stick-cable movement, just do a mockup with some cardboard from a cereal box and a thumbtack. It will be right for your KR. When I had the brackets and stick in place, I just dummied in the cables with pieces of scrap fine electrical wire. (I have a bit of telephone cable I had found by the side of a highway-about 28 gauge copper wire that I use for ties and other purposes like this) The system has built-in adjustment points to accommodate stretch or minor errors. One to three turnbuckles are inserted in the cable sections to get the brackets and sticks in the right relationships to each other. Since the cable is a closed loop, tension should not very greatly with different stick positions. The rods from the brackets to the ailerons themselves are also adjustable so that the ailerons can both be neutral at the same time. I also have some right sized removable cable clamps I used to mock up the actual cables before installing the cable end fittings so they would be right. When you are used to doing the "one off" type of construction and using scrap for dummying, it all gets easy at many places in a KR project.