Just wondering how many folks are using these and why they aren't more popular. I remember the Toy guys going nuts for these when AOR came out with them. Now Alcan owns the patent and can make them for anything. Short of using something like the AK57, they seem to be able to get the most flex out of a leaf spring set up. The new Alcan ones are capable of 46 deg. The popular thing now seems to be going to longer springs. This seems to be just as easy, you have to install new brackets either way. And you could do both, longer spring with the orbit eyes at the same time. Other than cost, (I am assuming they are expensive, I haven't actually called Alcan.), is there some big drawback I am missing?