......then the test flight numbers came out. As usual the real performance is somewhat different to the advertised numbers. The 130 kt. is theoretically possible but at 17000'. To get 100 hp at 17000' you need an engine with about 250hp. The 10 l/h is the idle fuel burn. Then there is the small matter of useful load with the 6 cyl lycoming up front the empty weight is 550kg.plus some fuel, no margin for a pilot. {just as well 'cause the cg. to balance the engine puts the fuel at the rear} All is not lost however because all the bunny fur will make the whole lot bounce a bit when it runs out of fuel and the cg. moves forward resulting in a near vertical dive......