One of the scariest things a gear designer can face is a blank sheet of paper. This is why most of our products are “derivative” rather than “revol...

In my last posting I advised designers to avoid relying on “rules of thumb” or computer coding when confronted with tough decisions. This admonitio...

The most obvious difference between a spur gear and a helical gear is the presence of that “helix” angle. Civilians will call them “straight-cut” a...

It was brought to my attention that the graphics used in my recent “herringbone” postings actually show double helical gears. I have a great suppor...

A reader wonders about gears where the tops of the teeth are the bearing surface, as used in spur gear differentials. Do they require any special construction or processing?

Introduction The concepts of sustainability and energy efficiency are gaining importance in power transmission engineering. Mor...

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