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Old 06-29-2010 | 07:27 AM
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bigandy
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From: AbergeleNorth Wales, UNITED KINGDOM
Default Graupner Harpoon Mk1 - Elevon linkages

Afternoon all,

I am just trying to figure out the control linkages on a Graupner Harpoon Mk1 kit I am assembling at the moment, and I was wondering if someone who has one of these, or has built one, could offer a little advice? I'm specifically wondering what length servo arm, and control surface horn (i.e. where is the control linkage pickup hole in relation to the hingeline), is being used to give the required ±35mm elevon movement required? The length of the servo arm is limited by the depth of the wing. I wouldn't mind keeping the control linkage nice and straight too, then I can sleeve the M3 studding used, with some Carbon tube.

Cheers
Andy