sentences:  In 1928 there was a 346 cc ohv MAG engined model.The 1929 Rex-Acme range consisted of 346 cc ohv models with two JAP versions, one with 74 mm bore x 80 mm stroke and the other with 70 mm bore x 90 mm stroke; also available as double port engines; 746 cc JAP engined V twin; 496 cc sv singles with JAP or Blackburne engines; 300 cc sv singles with cheaper frames and JAP or Blackburne engines and also similar 346 cc versions., the Speed King with 346 cc Blackburne ohv engines in two versions; and also two versions of a 496 cc Blackburne engined ohv single.There was also a 172 cc Villiers engined super sports model.