The pistons are coming together in the middle of this moving model of Mark McNitt's StreamLine Engine.  He designed an opposed piston configuration with "cam rollers" that guide and rotate the pistons as the rollers slide along curved "cam paths."  (Photo by Ed DuBois)


A Buffalo resident since 2001, McNitt worked as an engineering and project manager before starting his own company.  (Photo by Ed DuBois)


In the MN Cup, McNitt's engine won the clean tech and energy division.  (Photo by Ed DuBois)


The division winner badge from the 2015 Minnesota Cup.  (Image courtesy of McNitt)


This drawing shows the inside of the StreamLine Engine, with its two pistons that come together in the middle of one cylinder.  (Image courtesy of McNitt)