9 100% 100% 20o 80% 45o 100% 60% 40% 60% 45o 80o Overhang (multiple of diameter DCX) <3.0 3.0 – 3.5 3.6 – 4.0 4.1 – 4.5 >4.6 Multiplication factor for speed 1.0 0.9 0.8 0.7 0.5 574