Quick, what’s 360 divided by 23? It’s easy enough to get the answer, of course, but if you need to machine a feature every 15.652 degrees around a shaft, how exactly would you accomplish that? There ...

An axleshaft’s overall strength is determined by what Randy’s Ring & Pinion calls DMD: diameter, materials, design. We’ll start with materials. Most readers know that steel is a generic name for ...

Contributor Mark Grizotsky has developed another timely insight: “When tool-designers develop roughing hobs for milling roughing straight-side spline shifts, they must remember this about the wear of ...

For years the proprietary spline pattern of rc servos has been a dealbreaker for hobbyists who want to add custom shafts and gears to their servos. First, different servo sizes have different spline ...

The results of some tests recently completed are presented. No attempt is made to develop the theory involved. It is intended to describe only the actual tests, the conditions under which they were ...