Cast Iron because of its strength and mass
A flywheel is used mainly in Chicago and it's continent hope that helps .
Flywheel is used to store Rotational Energy.
If the clutch system uses hydraulics, the flywheel should be shimmed the amount that was removed. Removing material from the flywheel moves the pressure plate away from the throwout bearing by the amount that was removed.
You need to calculate the tangential stresses associated with a rotational velocity and thickness of the flywheel. It will be easier to assume a perfect cylinder and you will also need to know the material properties of your flywheel (poisson's ratio, density).
The forces coming on the arms of flywheel are tangential to the flywheel rotation.During the design of arms precaution is taken that arms are made with minimum material with required strength &with elliptical c/s we made arms stronger by keeping major axis of ellipse in parallel & minor axis perpendicular with direction of force so that large material is available in the direction of applied force. There for c/s of flywheel is elliptical.
A flexplate is used in automatic transmissions while a flywheel is used in manual transmissions. The 2000 GMC Jimmy SLS appears to have a manual transmission, so it uses a flywheel.
A flywheel is used in all internal combustion engines.
Mercruiser 260hp 350GM engine
have you removed the flywheel bolts? I've never used a flywheel puller, you shouldn't need one, theyre not a press fit. You may have to let it sit over night, then tighten it some more as descirbed in this article. http://hubpages.com/hub/removing-outboard-flywheel
No
A spring is used to hold together the clutch and the flywheel.