Flywheel ?s

[aveosummit]

So how much (hp or whp) could be freed up from using a lightweight flywheel?

[AveoSSSupercharged]

So how much (hp or whp) could be freed up from using a lightweight flywheel?

it could vary depending on what lightweight flywheel you buy

Lets do some math....


The Mass Moment of Inertia of a disk is it's resistance to motion. The MMI of a disk is defined as...


I = 1/2MR^2
Where..
M = Mass
R = Radius


So let's say we have a 12" flywheel (close enough guess) that weighs 20lbs (again, close enough).

T = I*a
Where...

T = Torque
I = Mass Moment of inertia
a = angular acceleration


If we assume the same angular acceleration for both cases, we see that the torque required to turn the flywheel is lower for a lightened flywheel. if we assume engine torque to be the same... we see that the angular acceleration goes up.

Let's work at 50 ft-lbs for kicks and giggles...

50 = 1/2 * (20/32.2) * 6^2 * a
50 = 11.2 * a
a = 4.47 radians/sec^2 (there are 2*pi radians in a circle, so figure this to be .7 revolutions per second extra)


Now we try again with a 12 lb flywheel...

50 = 1/2 * (12/32.2) * 6^2 *a
50 = 6.7 * a
a = 7.5 rad/sec^2 (figure 1.2 revs'sec extra)

That's nearly twice the engine acceleration! Imagine your 0-60 time cut by a good 2 seconds!

Definitely worth the effort...

[aveosummit]

What types of materials would be good to use for a flywheel.

****I have not used the Mass Moment of Inertia equation since i took the FE Exam a few years ago****

.....thanks for the information recall session....

[AVE0SAM]

thought i was in physics calls for a second there

lightweight flywheel? why?

[AVE0SAM]

just read the other pages in the thread

[AveoSSSupercharged]

just read the other pages in the thread

is there a way you can take the flywheel ones out into its own thread??

[aveosummit]

What companies make aftermarket flywheels?

[khan4rtist]

is it possible that flywheels from other applications will fit the aveo?? we could really use one, especially in a manual tranny considering how slow deceleration is on these cars.