The design was inspired by the best modern aircrafts currently on the market. Wooden aircrafts are usually easier to build to a great number of builder as the Gaz\'aile 2 is available as plans exclusively.
The weight to power ratio for a diesel engine is about 2 kilograms per horse power. The design has proven a true airspeed of 110 knots for 6-7 liters per hours (1.9 U.S. gallons) of diesel or Jet A. However, the mass and balance requirements remain the same: the excess of weight of the engine (about 60 lbs) and the wooden structure, are compensated by the little quantity of fuel load. The Maximum Take-Off Weight (MTOW) is 450 kilograms (992 lbs) for empty weight of 260 kilograms (573 lbs). It allows 2 people to remain airborned for 4 hours.
The engine of choice is the one extracted from the French Citroën AX or the Peugeot 106 (it might be difficult to find them outside of Europe). This is the smaller diesel engine, 1.4 liter, available on the market with a classical pump,
made of aluminum. It deploys 53 hps at 5000 rpm for 80 kilograms (132 lbs). In Europe, this engine is widely available for 300 euros used, or 1300 euros new. As a comparison, the Rotax engine is about 15000 euros... There are no fundamental modification and every builders have mounted this engine surprisingly easily.