Power is an LA46 on uniflow with a special light muffler made out of a peice of aluminium deck chair extrusion. It weighs about and ounce, took 30 minutes to make and cost.... nothing
The model weighs 43 ounces, span is about 56" and area must be around 650 sq. I can't remember most of the specs off hand.
So, how does it fly? Well at first it exhibited many of the failings associated with flapless models. Tail-dragging square corners for example... But with a few months of trimming and practice, it seems to fly as well as any flapped model I've had, especially in low winds. The one thing it still can't handle is a 12+ knot wind overhead. It just gets blown down the hemisphere with disturbing ease.
The experimental aspects of this model have been very successful. I've learned that is very difficult to substitute balsa where weight is such a factor and that the special construction method, while it works, isn't any kind of revelation. It may be worthy of further development when I have nothing else to do, though. As far as the flapless thing goes, it has been great not having to trim flaps, but on the other hand its good to have the option of trimming flaps! The next one will be the original fully flapped Impact derived design, with more composite content, more weight, more power.