For those of us only superficially aware of the annual TT road racing season, an internationally respected series of two-wheel races which run in Northern Ireland and the Isle of Man over the spring and summer months, Richard de Aragues’ 2011 film TT3D: Closer to the Edge was a fascinating introduction to the daredevil sport. Road, from local film-makers Diarmuid Lavery and Michael Hewitt of Doubleband Films, serves as a more thematically rich follow-up or companion piece. Narrower in scope and sharper in feeling with its focus on the story of Ballymoney’s Dunlop racing dynasty, the documentary charts the road…