A guard assembly for exercise bikes has a master sprocket guard and a slave sprocket guard that are separate from each other and that are positioned between a master sprocket and a slave sprocket. A flexible transmitter such as a belt or chain extends through a portion of the master sprocket guard and the slave sprocket guard but does not make more than incidental contact with the guards.

 
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< Portable and adjustable trailer assembly and method of use thereof

> Power transmission belt

> Exercise device with treadles

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