[QUOTE=buck22;6578327]
Iām no bit expert, but I actually had the same question a few years ago, and in my small little experiment it appears as if it doesnāt because a real baucher isnāt a fixed cheek, its a hanging cheek, nothing fixed about it, though it looks for all the world as if it is.
A hanging cheek, or baucher might have only a small little opening at top where the cheek piece of the bridle is put through, but its still a circular opening which allows the entire bit to turn freely if rein pressure dictates. Were the opening a slot instead of a round circle, the bridle cheek piece would be fixed. So when enough rein pressure were applied to to pull the bit it would pull down on the bridle cheek piece, likely creating poll pressure.
But because the part where you attach the bridle is round and open, and the part where you attach the rein is round and open, the bit can can move and rotate, not creating leverageā¦ despite looking like its designed to do just that.
These photos are very old and very terrible, but hopefully shows what I mean.
Here is a baucher with no rein pressure
http://i25.photobucket.com/albums/c54/buck1173/the%20great%20bit%20experiment/IMG_3291.jpg
with moderate rein pressure
http://i25.photobucket.com/albums/c54/buck1173/the%20great%20bit%20experiment/IMG_3293-1.jpg
you can see that while the top of the bit hasnāt rotated in the bridle cheek piece, it appears its not fixed or pulling downwards either
and with much firmer rein pressure
http://i25.photobucket.com/albums/c54/buck1173/the%20great%20bit%20experiment/IMG_3292-1.jpg
where you can clearly see the bit has lifted in the horseās mouth, releasing pressure on the bridle entirely.
While I donāt think this is conclusive evidence that all bauchers lift when pulled upon, I do think it illustrates that the bit is able to operate independent of the bridle because its not fixed.
I also did the same with a full cheek with keepers. I didnāt have keepers handy so I used a bit of bailing twine :lol:
here is the bit in neutral
http://i25.photobucket.com/albums/c54/buck1173/the%20great%20bit%20experiment/IMG_3279-1.jpg
with moderate rein pressure
http://i25.photobucket.com/albums/c54/buck1173/the%20great%20bit%20experiment/IMG_3286-1.jpg
and then increasing rein pressure
http://i25.photobucket.com/albums/c54/buck1173/the%20great%20bit%20experiment/IMG_3287-1.jpg
where you can see the cheek piece of the bridle bending at the point where the keeper ties it in because the bit canāt rotate (its fixed by the keeper), I presume its applying poll pressure at this point
and then even more pressure
http://i25.photobucket.com/albums/c54/buck1173/the%20great%20bit%20experiment/IMG_3288-1.jpg
where despite the terrible photo, its very obvious the cheek piece is being pulled and distorted because it canāt rotate.
*No horses were harmed in the making of this experiment and were completely comfortable with hamming it up for the camera for extra goodies when done:lol::lol:
http://i25.photobucket.com/albums/c54/buck1173/the%20great%20bit%20experiment/IMG_3285-1.jpg[/QUOTE]
I appreciate the educational pictures!
They do make the difference in action between that baucher and a full cheek clear.
But it looks to me like the bit and cheek pieces of the baucher remain in allgnment under āmoderateā pressure because the horse has dropped well behind the vertical.
Looking at the full cheek vs. the baucher where there is some rein pressure and asking what the bit does with respect to the cheek pieces, I think I have an answer:
I think both bits exert some pressure on the poll. I think they also move up to the corners of the horseās mouth if you keep pulling. But the āactionā-- the speed with which the bit does this when you pull or lets go when you offer rein-- is probably slower with the baucher. Itās the loose ring on the baucher that does it. Also, I have seen longer āstemsā connecting the ring of the bit to the cheek piece. IMO, the longer the stem, the more poll pressure the bit exerts for the same amount of pull on the reins.
Oh, and back in the day, you could find loose-ring full cheeks. To me, those bits donāt have many uses. The side of the full cheek might push the horseās head around for steering, but youād lose the effect on the poll/corners of the mouth.
I hope this makes sense.