This is slightly wrong too, I've never seen a frame / forks that has been clearcoated that has never eventually rusted from underneath. Obviously it depends on preperation. You generally start getting little pocks of rust after next to no time.
if the frame is blasted, then powder clearcoated (which is basically a uncoloured powdercoat) it is fine. i have done two with no probs.
if the frame is blasted, then powder clearcoated (which is basically a uncoloured powdercoat) it is fine. i have done two with no probs.