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Old 07-21-2017, 11:38 PM   #1 (permalink)
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Default cyclic servo endpoints affect subtrim

I noticed something odd, if you increase or decrease the endpoint of the cyclic servos it will cause the center point to move if there is any subtrim (changing the endpoint scales the subtrim). If the servo has no subtrim this doesn't happen. On every other FBL unit I have set up the subtrim is considered the center, the endpoints are referenced from that and changing the endpoints doesn't affect the subtrim.

This makes it inconvenient to level the swashplate at the center and the ends of the collective range because any change to the endpoints to level the swash at the top and bottom of the collective will change how much the subtrim affects the center point, and then re-leveling the swash at center throws off the swash at the top/bottom of the collective range again.

Also I don't recall this happening with the previous firmware but I might be remembering it wrong.
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Old 07-24-2017, 06:59 PM   #2 (permalink)
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Hmm that is rather odd, is there an advanced menu that allows you to just manually enter in center, high, and low values? I know brain has this capability and the subtrim just adjusts the center value as you stated most fbl units do. Alternatively, if you have a radio capable of this, you can avoid subtrim altogether and just adjust the center pulse for each channel you want. I use taranis and this is what I usually do. Think Jeti can do this too.
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