Isle of Man TT star and television personality Guy Martin has beaten a world speed record by 21mph - but not on a bike.
His nail-biting attempt to shatter the world sledge speed record was broadcast on his Channel 4 show, Speed, last night. Martin, 32, constructed a sledge mounted on downhill skis, helped by engineers from Sheffield Hallam University. He raced down a 37 degree slope in Andorra, reaching a record speed of 83.5mph. The previous record of 62.25mph was set by a German in 2010.
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