Quote Originally Posted by e-RICHIE View Post
The traditional way is for the slot to follow the center-line of the stay. The dropout angle is produced, or cranked by hand, to mate with the slot. Don't braze the dropout part straight mated to an angled slot. If the part comes straight it's only (ONLY) because the vendor wanted to save a penny or half-second on the labor and machinery.
But surely there are lots of factors affecting the angle, for instance: wheel size, crown width, chainstay length, rear hub spacing?