Ed I don't believe anyone is saying that it can't be done, FAA exempted (depending on the inspector). I've heard a lot of why's but this is however an experimental class of aircraft so anything is possible in theory. A complete redesign would be in order though since the wings would have to be longer and this would require a stronger spar. The AS5048 airfoil would solve the spar issue BUT that airfoil was designed to extract the utmost performance from the KR so who knows until it's completed and test flights begin whether or not it would fall within the FAA parameters (depending of course you could find a friendly examiner with an open mind) You'd probably have to use a smaller engine than those being currently used by most KR builder and drivers. Could be one hell of an expensive experiment when finished. Good luck Doug Rupert
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