Was traveling all day, but wanted to give you guys a TidBIT Tuesday! I had a request to do a kimberwick/kimblewick, so here we go! It's actually a pretty simple cheekpiece, but the options can confuse people.
Option 1: The lower curb slot (green line). This is the very mild curb option of the kimberwick. It offers ~1:1.5 pressure on the mouth, as well as rotation, just like a curb bit. This has very little signal before the bit truly engages, because it is a slotted selection.
Option 2: The upper curb slot (pink line). This slot provides very little or no curb pressure depending on where the slot is placed precisely, and very little rotation. It offers little pre-signal, like the first option, due to its slotted set up.
Option 3: Main ring. This operates effectively as a baucher bit, so it has small rotation, but effectively no leverage because the rein can slide up. It offers much more pre-signal because the rein can slide before engaging the bit.
It is important that you use a curb chain with this bit because it does rotate, especially on the lower curb slot. You can see where it properly attaches above. Overall it's quite a nice cheekpiece that is generally balanced and offers a few mild options without having to change the mouthpiece the horse is used to.