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Old 01-11-2013, 06:25 PM   #1
Westwind
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Default Servo issue

I'm installing my servos and found that one servo arm will not sit at a 90 from the servo sure to the position of the gear. The servo is centered. I think I might be able to trim it to center buy I wil lose some deflection. Is there a way to manually adjust the servo gear?

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Old 01-11-2013, 06:37 PM   #2
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Turn the arm through 180 degrees.
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Old 01-11-2013, 06:57 PM   #3
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Default Re: Servo issue

Tried that nil fix

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Old 01-11-2013, 07:30 PM   #4
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We used to be able to adjust the feedback pot, but not in new servps.

If your transmitter has sub trim, you should be able to adjust to center without loss of movement.

If you don't have sub trim, it may be alright as it is, unless it is a highly critical plane.

Unfortunately not all servos are made with an odd number of splines which allow us do adjust arm position by turning the arm 180 degrees.

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Old 01-11-2013, 08:20 PM   #5
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you could trim it (or better sub-trim).. you wont lose any travel.

If it still bothers you you could open the case and turn the output gear a tooth, but they can be a little tricky to get back together as there are several tiny gears on two or three shafts.
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Old 01-11-2013, 08:36 PM   #6
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Default Re: Servo issue

Thanks guys, I'll try the sub trim

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Old 01-17-2013, 09:06 AM   #7
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Seems some have forgotten that servo arms are in different offsets ...

The answer is to get ALL servo arms supplied with the servo ... you try ALL of them in different positions until you find the one that is 90 deg. Sometimes it's ONE of the arms of the 4 arm ... you just have to cut of the other 3.

Some arms used to have numbers moulded into the arm ... this was the number of degrees offset from 90.

It is best to find the correct arm instead of using sub-trim etc.

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