THE primary issues market is all set to switch to second gear, with private banks at the wheel. After a protracted spell of stagnation, an avalanche of initial public offerings is in the offing. Reason: the end of a three-year deadline set by the RBI.In 1993, taking a cue from the Narasimhan Committee recommendations, 12 private banks were granted approval 'in principle', with a set of guidelines that included a minimum capital of Rs 100 crore. The clincher was a 40 per cent ceiling to be clamped on promoters' holdings after three years. The rest was to be issued to the public.