We learn that the strength of a curb bit depends on the length relations between the upper and lower shank. This is true for curb bits as the rein is attached at the bottom and the curb chain in the top. For hackamores this is not the case because none of the affected straps are attached in the upper shank.
Instead, we have to look at the three points that will be charged when we stretch a hackamore rein. There is of course the bottom of the shank where the rein attaches, but also the two points where the nose- and curb ... Read more
