The Silver swallow is actually one of the best old style 2.5 cc diesels out there. Years ago I ran a comparison with a number of diesels including PAW, MVVS, ED, ZOM, LLam, Zeiss, Engel, RITM, Kumar, Webra and a few others. I don't have the comparison chart anymore but the Silver Swallow was one of the best in power to weight ratio and it was easy to start as well. One of my favorites and cheap as well!

Max