SPA / Weseman 3.3 Liter Corvair now running


Dan and Rachel Weseman, SPA/Panther people, are now testing their latest development in flying Corvairs, a 3.3 liter engine featuring one of their USA made billet crankshafts, with the stroke increased by .312″. This in combination with the same bore as a 3,000 cc Corvair yields 3.3 liters, or 200 cubic inches.


They test ran the engine a week before Oshkosh, and brought it to display in their booth. It brought a great deal of interest. If you would like to learn more, follow this link, it includes a video Rachel made of the engine on it’s first run:





 Above, Dan and Rachel stand on either side of their 3.3 engine at Oshkosh. It was mounted on the front of Paul Salter’s Panther, which is 90% complete.  SPA/Panther reached a milestone this week, as the first customer built Panther, built by Bob Woolley, went for a perfect test flight.




About William Wynne
I have been continuously building, testing and flying Corvair engines since 1989. Information, parts and components that we developed and tested are now flying on several hundred Corvair powered aircraft. I earned a Bachelor of Science in Professional Aeronautics and an A&P license from Embry-Riddle Aeronautical University, and have a proven 20 year track record of effectively teaching homebuilders how to create and fly their own Corvair powered planes. Much of this is chronicled at and in more than 50 magazine articles.

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