WKA being exclusionary and inconsistent. They allow Euro chassis in the Man Cup, so I don't know why not in oval stuff. Perhaps nobody's complained loud enough to let it happen, but there's also no real Euro LTO's around -- WKA's move killed the momentum. I looked into the Birels and buying Begeman's lot, but they're 28mm chassis -- rather small tube for today's style of racing. I forget what he was asking. It does look like a rather innovative design.
Freezeman -- I suspect it works well because the chassis flex allows you to get all the available grip on ice...if you brought it to a tacky dirt oval, I suspect the shortcomings, if any, would be more obvious. Got any pics of your assembled chassis? Just curious..