Upper Shank

Some articles on upper shank, shank:

Curb Bit - The Shank - Leverage Principles
... The relation of the upper shank (purchase)—the shank length from the mouthpiece to the cheekpiece rings—and the lower shank or lever arm—the shank length from the ... The standard curb bit has a 1½" cheek and a 4½" lower shank, thus producing a 13 ratio of cheek to lower shank, a 14 ratio of cheek to full shank, thus ... Regardless of the ratio, the longer the shank, the less force is needed on the reins to provide a given amount of pressure on the mouth ...

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