For making your own flywheel steel should do fine. You're probably not aiming for an 80,000+RPM flywheel that rides on magnetic bearings. So composites shouldn't be needed. The best material, eventually, for flywheels should be carbon nanotubes. They have huge tensional strength, but lousy compression strength. Tensile loads is what a flywheel has, so they'd work great.
It is important to note that not all batteries associated with these computer models are affected. The company is directing all users to its HP Battery Recall website to go through the online validation and replacement process.
Ford Ranger Recalls. There have been 7 recalls on Ranger vehicles in recent years. The latest, dated 2015-05-28 and published by the NHTSA on 2015-06-27, was due to a problem with the passenger side frontal.ince 1992, Ranger's have experienced approximately 17 recall(s) due to hazards with various components, including the air bags, tail lights, actuator, vehicle speed control and multiple axle. See a list of recalls for your model year below. IMPORTANT NOTE: Also check the list of Additional Ford Models to the right.