Dutch roll / wing rocking
The plane rocks its wings back and forth in a repeating oscillation, especially in turns.
💡 The idea: This is airframe geometry, not a rate/trim fix — dihedral and fin area are out of balance.
Try these in order
Make one change at a time and re-test — that's how you learn what your car likes.
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1
Reduce dihedral or increase vertical fin area
Rebalances the dihedral-vs-fin relationship that's causing the rock.
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2
Check CG isn't too far aft
A secondary contributor worth ruling out.
Found what works? Save it as a Setup Sheet and compare it against your baseline, log the result in your Run Log, or dig deeper in the RC Wiki.
General RC tuning guidance — your chassis manual's own tuning chart is the final word for your specific car.