. "Jim Adema"@en . "Adema, Jim"@en . "1975-12-14Z"^^ . "American snowmobile racer" . . "1975Z"^^ . "1942Z"^^ . "Jim Adema was a snowmobile racing star during the first half of the 1970s. He was inducted into the Snowmobile Hall of Fame in 1988. An independent oval race driver, Adema won a record setting number of races from 1970 to 1975, all while riding on one of his modified Sno-Jets, each of which were ThunderJets models.Collaborating with Sno-Jet's Advanced Research Team in 1970, Adema tested and advised on how to improve the new ThunderJet racer which, at the time, was unstable and not competitive."@en . "1942-01-29Z"^^ .