| 摘要 |
A modular transmission assembly includes a housing, a drive wheel rotatably mounted the hollow housing, an idler wheel rotatably mounted in the hollow housing and driven by the drive wheel via a belt, a tension rod pivotally connected to the hollow housing and having a distal end abutted to the belt and a resistance device adjustably mounted on the hollow housing to provide different resistances to the idler wheel such that when the drive wheel is rotated, a force to drive the drive wheel to rotate is dependent to the resistance applied to the idler wheel.
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