Hey Phil,

what I meant by a "slow stab" is that it is a lifting diamond airfoiled stab (slow is not a bad thing). This should make it a little "softer" in response to controls. The SP was specifically designed as a pattern trainer and uses a continuously variable airfoil. As you know, the root is semi-symmetric with a max thickness somewhere in the 40-50% of the foil. This moves to ~30% fully symmetric at the tip. According to the designer this wing should be very forgiving and allow good low speed handling in flight. Part of the problem with the original plans is that the foils are inaccurate and length incorrect. Brian just offered to send me some info so that we can fix this (I think it's mostly done but could use some cross-checking).

I forget what engine you have in yours but the model should handle well at ~30% throttle on a 40. Naturally with a 46 or 50 it will move out but the model was designed for a K&B 40 (or similar) so it should offer good handling with such an engine if built to 4.5-5 lbs.

I'm inclined to having a foam core wing cut for it as it would best represent the airfoil the designer had in mind.

David

PS I'm glad to hear you are enjoying your SP.