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Old Feb 01, 2013, 05:55 PM
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Tim Lampe; Hobbico R&D
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Champaign, IL
Joined Dec 2009
4,147 Posts
I dunno what's terminal. I'd like to think in the 160, 170, 180 range???

Problem with internal servos is torque rods. With control horns and no torque rods you get about as direct a linkage as can be. Torque rods can introduce binding. Or, if no binding, free play. At any rate, you also get a small degree of the rod bending due to torque loads, and again, slightly more free play. Look at the linkages of all the top-shelf F5D/F5B stuff - you'll see no torque rods and horns.

Plus, you get the servos out of the middle of the wing for more strength and more room inside the cabin.

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