Originally Posted by
davester
I agree that the 5 degrees is incorrect, but I believe that the 0.2 is also incorrect. Calculating arcsine of 3/430 gives an angle of 0.4 degrees. No matter, the important point is that not aligning the dropouts, even by this small number of degrees, will result in broken axles, ruined bearings and/or cracked dropouts.
I would estimate it's closer to 1 degree per size per side since there's extra stiffness at the BB due to bigger tube sections and the chainstay bridge. The stays would bend as beams with most of the bending near the dropouts due to the taper.