This is my latest engine conversion, 725 cc, 4 cycle, kohler command with a 2.5:1 chain reduction drive, that produces 40 hp at 5500 rpm. If you want to build one or need more information, then just send me an email [email protected]. I think this would be great for small airboat projects too.Ron Besse.
Here is a link to Part 2 video:    • Kohler ultralight engine Part 2  
Kickstarter link: https://www.kickstarter.com/projects/...