Re: 1938 fisherman carb lift and spring tension Home › Forum › Ask A Member › 1938 fisherman carb lift and spring tension › Re: 1938 fisherman carb lift and spring tension kevinfReplies: 122Topics: 14 March 17, 2015 at 2:11 am #12141 I’ve never compared the two side by side but for rise I’d go with the spec for the Lightwin from the posting. Lightwin in 1940 was a 5 hp opposed twin. Maybe that will start a discussion 🙂 Kev