People saddle on to horses from the left side, bicycles were built with the same intent back in England with the driving on the left side in mind, that is why the chain is on the right sight, as well as due to older and some modern builds having rear cogs attached, and they will tighten the chain clockwise and loosen counterclockwise, that is why the chain is always on the right side.
Correct me if I’m wrong.
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