When you think of custom Harley-Davidsons, you likely tend to think of the Sturgis, Sons of Anarchy, Daytona Beach, and Southern California ape-hanger crowds. It's a certain aesthetic that denotes you're a part of the Harley Motor Co. crowd, and oversized silver skull rings and leather cuts abound.
There's also a sizable branch of hot-rodders and custom motorcycle builders that can turn any Harley engine into something that's positively a work of art. What you likely don't think of are diesel engine swaps. But maybe you should be, as the following custom Harley-Davidson not only looks the part, but it was made to solve some incredible problems.
See, this tractor engine-swapped Harley Softtail was built by an engineering student, and his cohorts, in British Columbia, Canada, and was thought up to both used biodiesel and/or old cooking oil, while reducing CO2 emissions of the university's heavy machinery, i.e. its gardening, trucks, and other vehicles. But to put theory into reality, they chose to showcase their ideas through the lens of a motorcycle with a Kubota diesel engine.
