Here is a system that is used to create ultra lightweight control linkage. This system uses triangle shaped control horns and shrink wrap tubing. The diagram below should help you get the idea. In the first drawing break the carbon rod with your fingers but do not separate. Apply CA and shrink wrap over the break. This is the easiest way to do this half.
The second drawing shows the shrink wrap pushed over the end of the servo arm. Use needle nose pliers to stretch out one of the ends of the shrink wrap to fit over the servo arm. Check the fit befor you CA into place. Now put CA on the carbon rod and push into the other end, heat to shrink.
This makes for a very strong and effective control system.
Control rod size .040 (1 mm) for 8oz. foamie
Control rod size .060 (1.5mm) for 8oz. + foamie
Please comment and feel free to add your knowledge to this post.
#1 by Mathew Wellington on March 13th, 2010
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These linkages are on the Combat series, I built my first BRC P47 december 2008, and the linkages held up, never needing repair , I retired the P47 about 2 months ago (it ended up more hot glue than plane, It was my second plane after a trainer, and had alot of abuse)