the pistons drive the crankshaft via the connecting rods, though on start up the starter motor drives the crankshaft in its proper rotation direction to get the ball rolling
The way the crankshaft is built. Which controls the order that the pistons move up and down.
The pistons stop going up and down.
wrong size bearings
The engine has a crankshaft that is connected to all the pistons in the engine. When the engine is running the pistons are moving up and down and are turning this crankshaft. The crankshaft in turn is spinning a shaft connected to the transmission. The transmission is turning a driveshaft that is connected to the differential which in turn is turning an axle connected to the wheels.
The crankshaft is an internal component of the engine that converts an up and down movement of the pistons to a rotational movement of the the crankshaft. This is provided to the powertrain for movement. The bottom of the pistons are attached to the crankshaft with main bearings.
A crankshaft is the part of an automobile that converts the force of the engine's pistons going up and down into the force that makes the wheels spin forward so that you can move. All cars require a crankshaft, and it is possible for them to need repairing.
pistons, cams, valves
To turn a linear motion into a rotary motion.
Car engines burn fuel in cylinders. When the fuel burns the air in the cylinders expands. The expanding air pushes down on a piston. The piston pushes down on a crankshaft. Then the piston comes back up. The piston going down and up makes the crankshaft rotate. This rotating motion is transferred to the wheels of the car. That pushes the car along. Thus the fuel burning in the cylinders pushes the pistons. Without Petrol to burn in the cylinders, the pistons would not push the crankshaft. It would not make the wheels move.
in the engine and they move up and down when it is running
Generally speaking the crankshaft is located deep within the engine. The pistons are connected to the crankshaft and it is the device that turns the up and down motion of the pistons into a horizontal motion that drives the transmission and in turn the drive shafts that turn the wheels. If you ever have an opportunity to see your crankshaft that means your engine has been torn completely apart for a major overhaul.
there are pistons in the motorbike and the move up and down and it makes the cog move then the chain moves the bike