r/l 109 flap/trimming operation:-
11.7" dia wheel with 5 3/4 turns between full up and down ( ~+3.4- -8.4 deg movement of tailplane)
RAE report on a captured 109e notes excellent placement and ease of operation. Also noted is the ease of using both with one hand to counter the nose down effect of flaps on aircraft trim (~10 deg nose down at full flap)- taken from 109 pilots notes by Crecy.
I'd also point out that a big wheel has more 'leverage' than a small wheel- but i haven't seen any force measurements for this
Can't recall anything on use of trim/flaps in combat as such but there are quotes of using trim (carefully ) to pull out of high speed dives iirc.
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