Both are vehicles where light weight is important, and man-made objects.
Pedal : Bicycle
Birds and airplane
It is for example: airplane, car, bus, boat, bicycle.
Wheel-and-axle, levers, inclined planes.
fff
That would be stretching it too far. But the bicycle lead to the development of several light weight components whose technologies could be used in building aeroplanes.
Bicycle Making~APEX
To measure the mechanical advantage of a bicycle, you would compare the input force applied by the rider to the output force produced at the wheels. The mechanical advantage is calculated by dividing the output force by the input force. In the case of a bicycle, the mechanical advantage helps determine how efficiently the rider's pedaling translates into forward motion.
I guess they had a dream of a better way to get around than the bicycle. I am serious.
Boat? Car? Airplane? Truck? Jet? Bicycle? Train?
They built bicycles. This is why their airplane used bicycle parts (sprockets and chains) in the drive train between the engine and the propellor shafts.
Because they wanted to make money, just as they did with their bicycle business.