#2205: Twincycle

Today’s invention is an engine for bicycles.

Motorcycles have often had engines that acted as part of the frame. Imagine if the two rear frame members of a pushbike (yellow) were each the cylinder of a small IC engine.

bikengine

Each of these would contain a piston attached to a crank mechanism (red).

This could be powered by eg petrol stored in another part of the frame and provide assistance when travelling up long hills.

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