A weymouth fixed is used together with a bradoon, the socalled double bridle. This combination is used in the higher dressage classes. The weymouth is a cheekpiece with leverage. The longer the shanks the sharper the effect. The weymouth fixed has long shanks and therefore is a stronger bit than the baby weymouth fixed. For a double bridle combination a special bridle or an extra cheekpiece is required. In addition, this cheekpiece must always be combined with a curb chain to prevents the bit from rotating too far in the horse’s mouth. This bit is not suitable for the inexperienced rider.
An arched mouthpiece is a straight mouthpiece that is slightly bent. Because of the forward bend in the bit there is room for the tongue. This mouthpiece exert even pressure on the complete tongue. An arched mouthpiece has a sharper effect than a jointed or an eliptical mouthpiece.