SPRATT 103

…Click above to enlarge them (+ Videos)

	In flight Side view
	Virage
	“Follow this Spratt !”
	Landed Side view
	Rear view Very low drag
	Dismontable in 20 mn By only one person
	Very accessible (and very simple to drive) President of the Disabled Pilots confirm it !
	Paris airshow, june 2002 First presentation to the public
	Amphibious version
	Side view
	Front view

Construction of trike :

TIG welding of the first tubes

Stainless steel and standard sizes

Fuselage simple to realize

Centering test

Concept legally ‘multi-axis’ by its conduct and ‘pendular’ by its centering. Category to choose according to your license

Construction of wings :

	Preparation of the composite panels Specific to the Spratt 103
	Drying of the panels Fiberglass fabric + polyester resin
	Cutting with hot wire the extruded polystyrene ribs
	Gluing leading edge panels on the ribs
	Gluing the intrados and extrados panels
	Reinforcement of the leading edge = C spar
	Final painting Simply, with a roll 😉
	Resistance test at + 4 G …while this concept undergoes maxi 1.5 G !

Engines :

	First tests : Honda GX620 of 20 hp, with reduction Low power and too many vibrations due to the reduction unit
	Kohler of 23 hp Correct but not very aesthetic
	Briggs & Stratton of 23 hp with prototype propeller Dishonest power and too fragile
	Honda GX690 of 22 hp Perfect !
	Very economic 25 hp engine ‘2 CV’ Citroen car engine (1/2 VW can be OK too)
	Ecologic and economic engine in development Diesel consuming 1 liter per hour of frying oil !
	Subaru EH72 with injection, 24 hp Perfect … but no longer provided
	Honda IGX800 with injection, 25 hp = Actual (R)evolution ! More than perfect ! 2000 $ and 3 years warranty

+ …

Bernard Geffray
Designer of the Spratt 103Named ‘Robin Hood’ in one of the 41 articles published yet (37 + 4/’Anticollisions’) 😉

and… Videos