Sorry Alpha one six I must disagree, I have flown quite abit in legacy aircraft such as Hiller, Enstrom, Kaman, Hughes, and Schweizer and all of the models I have experience in have a trim hat on the cyclic that functioned electrically through motored spring displacement for cyclic load for trim. If one looks at current military aircraft in the U.S. Army, the mh-6 and the uh-60 do have a funtioning trim hat just like their civilian counterpart. On the uh-60 you have the option of trim hat and gradient disconnect with a button. This is an interesting thread thanks for making me pull out my manuals.