| 摘要 |
A primary drive chain tension adjuster having a hinged arm pivotably mounted to a base, and a low friction nylon ride mounted on the upper, opposite end of the hinged arm. A spring, preferably a urethane elastomer sheet, is positioned beneath the hinged arm. When the hinged arm is pivoted downwardly, the underside of the hinged arm compresses the urethane sheet, which exerts a spring force upwardly against the hinged arm. As a chain riding across the ride slackens, the urethane sheet forces the hinged arm upwardly taking up the slack in the chain.
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