All metals were originally cast, aluminum billet is continuous cast to form long pieces. Cast aluminum (356 or similar) is only 18000 psi strong when not heat treated, as in automotive parts fresh out of the mold. Then they naturally age for a while till being installed, or they can be heat treated and have near the strength of 6061(what I do). What I said is that I can cast 6061 and heat treat, so my products will be just as good as any other but I charge less because casting is cheaper to mass produce. I will just have to compensate for the extra shrinkage of 6061 because it is an alloy not designed to be cast as the final product, it is great for machining and is a good strength but needs to be heat treated. Once again, I said POUND FOR POUND. This is why nobody uses aluminum bolts in high stress applications, because it needs to be thicker for the same strength. I am not an ignorant fool, I know that steel is much stronger but heavier, and the stock flywheels are cast iron so the strength of steel is irrelevant. You seem to ignore some parts of my posts, take other parts out of context, then try to prove me wrong. Not cool, bro. And how is titanium a steel alloy? It may have iron in some alloys, but not much. Titanium has nothing to do with this discussion anyway, we are talking about a low cost flywheel. I guess because agk's flywheel is aluminum, it will grenade, according to you. It has to do with weight. Aluminum has more than enough strength to support itself at the rpm our engines will see. I have a nitromethane powered RC car with a small 2 stroke in it, and it will rev up to 35k and it has an aluminum piston and connecting rod, and now that I remember, so is that flywheel! Case closed.
