flywheel

[LEV_101]

good explaination guys ! fully understood.

now i wont get confused over what people say.

[jondee86]

Yeah... been done before, and better....

viewtopic.php?t=33316&highlight=lightening+flywheel

viewtopic.php?t=21131&postdays=0&postorder=asc&start=0

I wouldn't sticky this thread as there is more chaff than wheat

Cheers... jondee86

[Dragger_Dan]

2 words

ROTATIONAL INERTIA

THANK YOU!
Inertia:

The tendency of an object at rest to remain at rest, and of an object in motion to remain in motion.

Momentum:

The mass of an object multiplied by its velocity. If an object has a high momentum, it is more difficult to change its velocity.

So, all objects resist a change in velocity, but a heavier object is much harder to change in velocity than a lighter object.

A very easy analogy - just think of two cars, exactally the same power, exactally the same setup, but one has half a ton of bricks in the boot. Which one will be able to accellerate and brake faster? The lighter one of course. It has more momentum at the same speed simply due to the weight. This weight means the car is much harder to accellerate and break than it's lighter counterpart. That's linear inertia. The idea of rotational inertia is exactally the same, but of course it applies in a circle.

[Dragger_Dan]

The bit I don't quite understand is why is a lighter flywheel better for burnouts? In theory if you hold a certain RPM and drop the clutch a heaver flywheel is going to cause much less of a drop in RPM when the clutch engages than a lighter flywheel, isn't it?

If my theory holds up then it's a trade off I guess in a drift car. Heavy flywheel would be better for clutch kicks whereas a light flywheel would help out with power oversteer and the likes.

I think that heat dissapation and capacity would be another consideration. A light flywheel would heat up really quickly vs a heavy one. But a heavy one would hold heat for longer and take longer to cool down. Yet again trade offs.