I wouldnt even run a golden rod on the throttle in a pattern plane. The expansion problem will cause your throttle to vary slightly, and it may sound insignificant, but you want absolute repeatability on a pattern plane. The 2-56 rod, even in plastic is definitely not sufficient for a 2 meter pattern plane, unless you have it mounted several places along the way, and I still wouldn't trust that it wouldn't flex or even worse flutter under certain conditions.

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