This plans is based on a scale outline of the X-29, but for a better-flying RC model— increased the vertical tail area about 10% and also scaled the wing and canard up about 15% relative to the fuselage (since the real X-29 has a rather small wing). These changes paid off, since this model is smooth and solid in the air and can truly be called a park-capable flyer.
Ultra Lightweight RC motor glider DIY Build video How to make Scratchbuilt Ultra Lightweight 2 meter RC motor glider (FAA registration not required, under 250g Weight Limit)