In a medium mixing bowl, sift together the flour, sugar, and salt. Stir in the bran flake crumbs. Lightly beat together the egg and oil, and stir into the flour mixture. Stir in the cooled raisins and water. Divide the batter evenly among the three pans. Bake for about 30 minutes, or until a toothpick inserted in the center comes out clean. Cool in the pans for about 10 minutes, then turn out onto racks for cooling.