ORIGINAL: TrumpetRhapsody
My JR XP7202 allows me to have individual trim settings for each flight mode. So for example (I don't) if I had 5 clicks of right cyclic to counteract the natural drift to the left, and I switched to idle up, it would be at 0 clicks, and start drifting. I know a properly setup heli should have a perfectly leveled swash and no trim, but just in case it doesn't, this is something to at least give a little thought to.
I usually trim my heli in normal mode, then copy the trim settings to my idle-ups, then if they need to be adjusted in flight I can at that point. I usually only need about 1 or 2 clicks in any direction. My forward/backward trim changes almost every flight though, b/c of different battery weights, and just never putting the batt in exactly the same spot.
Well what do you know..... I appreciate learning that. You are right, with that feature one could encounter a big problem really fast, especially the first time they went into idle up. The for/aft trim thing is a pain isn't it? Especially when correcting for a trim issue whicn is caused by CG just makes it worse when you go upsidedown. I've thought about marking a point on my lipos to match a point on the mounting plate but never got around to doing it. *sigh* sorry for being off topic....