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Home✈️Aircraft🚁Helicoptere-Electric General Discussion › Using Sub Trim To Acheive 90 Degrees On Servo Arm?
08-03-2007 02:47 AM  13 years ago
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vortechZ230

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U.S.A.

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Using Sub Trim To Acheive 90 Degrees On Servo Arm?
On my Spectrum DX6, I had to use the following Sub Trim to get the servo arms to center at exactly 90 degrees, on a Honeybee King heli, Pitch:+60, Elevator:+18, Aileron:-11, Due to the spline configuration on the servo shafts, there was no way to get them at 90 degrees, they were either too far up or down from the 90 degree point., My question is, is it ok to use the sub trim, the swashplate moves smoothly in all directions,and everthing seems to be working fine, just curious.....
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08-03-2007 02:11 PM  13 years ago
Gyronut

rrProfessor

Martinsville In.

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Yes.

Its ok to use sub-trim to center the arms, but don't get too carried away with it.
The smaller the sub trim value the better.
Rick
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08-04-2007 12:27 AM  13 years ago
bmitchell138

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Huntsville, AL U.S

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I had a similar problem. I removed all of the servo horns from the servos and set the trims and sub-trims to zero. Then I placed each horn (I had a few extra horns also) on the servo one at a time to find the closest match to 90 degrees. Then I adjusted the sub-trim none of which were over +/- 30 clicks to achieve 90 degrees.
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08-05-2007 02:55 PM  13 years ago
vortechZ230

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U.S.A.

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I just installed new servo horns, Im at exactly 90 degrees, and the sub trim is now less than 20 points on all three servos, this should be alot better, Thanks guys!
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Home✈️Aircraft🚁Helicoptere-Electric General Discussion › Using Sub Trim To Acheive 90 Degrees On Servo Arm?
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