Built by Richard Egge
Rosinante is a two cylinder Stirling Engine using a modified Scotch Yoke linkage. Her first outing was at the 1998 NAMES exhibition, and she performed flawlessly, running continuously for most of the day.

Richard Egge writes:
    "Rosinante has two power cylinders and two displacer cylinders. The power cylinders are arranged 90 degrees to one another while the two displacer cylinders are vertical and parallel.  The crankshaft runs front to back just above the top of the displacers, with the crank throws at the front and the fan/flywheel at the back.  The linkage connecting the pistons to the crankshaft is a variation of a mechanism called a "Scotch Yoke".  Both power pistons operate off of the same crank throw and since they are located 90 degrees to one another, the left piston leads the right piston by 90 degrees, (the crank rotates clockwise.) 
     The left power piston also actuates the displacer piston on the right side.  (The displacer piston leads the power piston by 90 degrees in the Sterling cycle.)  Additional linkage is needed to operate the displacer piston on the left side, this operating on a second crank throw at the very front of the crankshaft. The brass disks are counterweights to balance the weight of the displacer pistons.
    The hot ends of the displacer cylinders are contained by a shield of stainless steel so as to concentrate the heat of a single flame to heat both cylinders. The portion containing the name Rosinante is a reservior containing water to inhibit the transfer of heat to the cold end.
      Why Rosinante you ask?  Someone suggested to me that the engine reminded them of a windmill.  That reminded me of the story of Don Quixote. Rosinante was the name of his horse."

Another view of Rosinante
and another
one more