| 摘要 |
A spoke system includes at least three rim pivots, at least three hub pivots, and plural shafts each extending along a substantially linear path between a rim pivot and a hub pivot, each path being substantially aligned with the center of a rim pivot and the center of a hub pivot. Each shaft includes an integral rim end forming a loop around a rim pivot and an integral hub end forming a loop around a hub pivot. The present invention also includes a tensioning system for biasing the inner vertices away from the outer vertices, thereby tensioning the continuous spoke. The path of each shaft may be substantially aligned with the center of a rim pivot and the center of a hub pivot so that a tension along the length of the shaft will not produce a moment about the rim pivot or the hub pivot. The tensioning system may include plural tensioning mechanisms, with each tensioning mechanism including a clevis with a base attached to the hub and two arms extending from the base, a reaction pin extending between the two arms, a hub attachment pin extending through a central portion of a vertex, a pusher pad engaging the hub attachment pin, and a tension adjusting screw engaging the reaction pin and biasing the pusher pad so as to bias the hub attachment pin and the vertex, thereby tensioning the shafts.
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