[s-cars] RE: Lightened Flywheels

The CyberPoet thecyberpoet at cyberpoet.net
Mon Nov 17 13:45:03 EST 2003

Paul wrote:

confused: Why are lightened flywheels better than stock flywheels for
our car?

Marc Responds:

In a nutshell: Lightened flywheels reduce the total mass-movement of
the engine on any vehicle. This means faster RPM changes (less mass to
spin up and to spin down). The result: a more responsive engine that is
accelerates and decelerates quicker. What is the S-car? It is a
performance-oriented version of Audi's offerings. Thus, performance is

Note that Dave gave a good explanation, but also missed one crucial
point -- the location of the weight in the flywheel also plays a
significant role. Just as it's easier to swing a 10 lb weight on a one
foot rope than it is to swing it on a 20 foot rope, the location of the
mass on the flywheel in terms of distance from the center plays a major
role. A flywheel of lesser weight, but with that weight distributed
further away from the center can offer identical benefits as a heavier
one while reducing the load on the bearings.

=-= Marc Glasgow

Macintosh Training and Maintenance Pinellas Florida 727

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