A 1/8 inch pilot hole followed by a 3/4 inch dia hole to be drilled in end of a 3.875 inch dia shaft.Calculate the RPM of each drill. 8 G& g3 S/ r; T# f4 R! ?Note: CS=809 r6 g4 a: `. a5 H3 Q# i
* ?+ @4 W# ~4 m* j/ D
RPM 1/8=6 v0 l9 H- ~( g% n e
RPM 3/4=9 T4 A8 C( u: }) B0 ~