Stalk-diameter sensing system with multi-material stalk feeler

A stalk-diameter sensing system for an agricultural harvester that travels on a field in a forward direction, the stalk-diameter sensing system comprising:

• a first sensor and a second sensor, and
• a first stalk feeler and a second stalk feeler, the first and second stalk feelers deflectably mounted on opposite sides of a stalk-receiving gap that receives a stalk planted in the field, the first and second stalk feelers yieldably biased into the stalk-receiving gap for deflection upon contact with an outer surface of the stalk as the agricultural harvester travels on the field in the forward direction, the first sensor coupled to the first stalk feeler to sense deflection of the first stalk feeler and generate a first signal, the second sensor coupled to the second stalk feeler to sense deflection of the second stalk feeler and generate a second signal, each of the first stalk feeler and the second stalk feeler comprising a first material and a second material different from the first material, at least one of the first material and the second material positioned at least partially in the stalk-receiving gap,
• wherein the first stalk feeler includes a pivot body defining a first pivot axis about which the first stalk feeler pivots, the pivot body having an arm nested in a cavity of a bar of the first stalk feeler, and the second stalk feeler includes a pivot body defining a second pivot axis about which the second stalk feeler pivots, the pivot body having an arm nested in a cavity of a bar of the second stalk feeler.