Stupid question here - why bother with a biplane for pattern, given the issues with building to the 5kg limit and trimming out the well known pitch and roll coupling problems? Don't get me wrong, I love biplanes, but not for pattern. It is well established that a 2m monoplane with around 950sqin of wing and either 1.40-1.60 glow or electric power can be built (relatively) easily to the weight limit and will perform the current schedules about as well as can be expected of a device that is an inherent compromise in design requirements. So why a biplane?

Just wondering, that's all.


Mark