10/14/2026
Adding a leverage bit isn't just about adding or releasing pressure. It's also about the timing of that pressure.
With a leverage bit like a Weymouth or Pelham, we have a shank above and below a fulcrum point, so we have a lever. When we take up the contact, the cheekpiece rotates and applies poll pressure.
A long shank has more leverage off the poll because you have a longer shank below the fulcrum. Because of that, it takes longer for the rein aid to engage because the cheek has to rotate farther forward before the bit engages. With a shorter shank, there is less potential for poll pressure, but the action of the bit is quicker because it doesn't have to rotate as far to engage.
Then with any leverage bit, when the bit engages the tongue is when the curb engages which stops rotation and therefore stops the increase in poll pressure. The difference to a long and short shank is yes, the amount of poll pressure, but also to the point at which this occurs.
Personally, I generally only use short-shank leverage bits with experienced riders who have good hands, good timing of their aids, and a good seat. The exception is that, with some horses, a short shank can actually sit a little quieter because there is less movement in the cheek, and the bit can stay a little more stable in the horse's mouth.
So when we talk about leverage bits, I don't want to reduce the conversation to “long shank equals more pressure” or “short shank equals less pressure.” The length of the shank also changes the timing and mechanics of the bit, and that matters just as much as the amount of pressure.
Kim Gentry
The Bit Lady