Why do wheels turn on jackstands when in neutral?

[Logan]

When on jackstands in neutral, why do the wheels turn when the car is running?

This is a discussion in another forum.

We know it's normal, but why does it happen?

Any solid proof/explanations?

[Sir_Christopher]

humm, im not very sure but im gonna say a whole bunch of vibration coming from the engine? there is a lot of moving and rotating parts in a car when its in neutral, but that is just my thought.

[redrumracer]

i never wondered that, but now i do.

[Tech5]

It take a good min to explain to full detail but what happens is the engine running is turning the flexplate/flywheel thus turning moving parts in tranny there for turning the wheels....

[Init2winit]

When on jackstands in neutral, why do the wheels turn when the car is running?

This is a discussion in another forum.

We know it's normal, but why does it happen?

Any solid proof/explanations?It just simply centrifugal motion. Now on some transaxles, when in park, the wheels will spin in opposite directions causing a locking or "park" feature.

[SixSquared]

^^What he said. There's nothing stopping the wheels from turning, and even when the car is in neutral, there is still a small amount of motion being carried throughout the drivetrain.

[canas]

weird. idk.

[Echonova]

Magic.

[BTEC]

its called gear rollover.

[trc_gsr]

its the resistance in the bearings in the tranny on the mainshaft and countershaft, the mainshaft is always spinning and even tho all the gears are on bearings there is still some frition created and the counter shaft ends up spinning too, but not as nearly as fast as the mainshaft tho. the counter shaft is then connected to the diff then axles, wheels

[BTEC]

its the resistance in the bearings in the tranny on the mainshaft and countershaft, the mainshaft is always spinning and even tho all the gears are on bearings there is still some frition created and the counter shaft ends up spinning too, but not as nearly as fast as the mainshaft tho. the counter shaft is then connected to the diff then axles, wheels
definition of gear rollover. i didnt feel like typing all that. lol!!!

well said