Skydiver
Okay, got my servos centered, and wondering where to put the pushrod ends. For maiden flight do I
put them in the lower hole on the horn and the closest hole to the gear?
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omar182114
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Okay, got my servos centered, and wondering where to put the pushrod ends. For maiden flight do I
put them in the lower hole on the horn and the closest hole to the gear?



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Skydiver
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The visual really clears up the question. Thanks.
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Wildthing
Depending who's plane you are building, most designers can give you a starting deflection angle that way you can set you max throws before you even attempt to fly it.
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Skydiver
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Depending who's plane you are building, most designers can give you a starting deflection angle that way you can set you max throws before you even attempt to fly it.

I guess minimum deflection and increase it as I find out how the aircraft performs..
I just want the winter to end here in NE Ohio, so I can do some flying..
Gad, I dislike winter. It is so inconvenient at times..
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Wildthing
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I guess minimum deflection and increase it as I find out how the aircraft performs..
I just want the winter to end here in NE Ohio, so I can do some flying..
Gad, I dislike winter. It is so inconvenient at times..

minimum or maximum doesn't matter if it ends up being the same number. . Once you are comfortable with how it flies and you have it all trimmed in you can start adding more deflection and find what you like.
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Dave748
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Omar, beautiful Solidworks modeling! May I add several thiughts to your post: You pointed out its good practice to place the holes of the control horn directly above the hinge line. I would suggest this is imperative. Moving the control horn either fore or aft results in a non-proportional throw. For example full down elevator versuses full up elevator on the transmitter will result in different deflections of the control surface. Next, you commented the best setup is to place the control rod at the servo's farthest hole to have the longest control arm at the servo and shortest at the control surface. I agree this is great for 3D flying and maximum deflection. However, this arrangement will result in the least torque applied to the surface. My preferred setup is almost opposite from yours as I want maximum torque at the surface and I want small deflection for fast flying. As an example of this, consider a ten speed bicycle: when the smallest front sprocket is used with the large sprocket in back, you have maximum torque at the wheel. When you shift to the highest gear, you have the large sprocket in front and the smallest in the rear. You then spin the wheel fast and the lowest torque at the wheel.

Dave
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JettaManDan
i always setup for maximum deflections from the start...farthest hole out on the servo..lowest on the control horn..then i set a high expo rate...40% or more for the first flight. That way you can get some smooth small stick movement flight..but then bang them full deflection to see how it is. I'd rather have maximum mechanical travel and limit it later in the radio.
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Wildthing
I always start in the middle and very few have required change.
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Butch1953
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Boy what a great video excellent if your just starting out in this wild hobby.
The newbies should watch this!
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Jeriah
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Best explanation video I've seen! I had to figure it out through experience but this really helps the new guys!
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