Quote:
Originally Posted by 1955cj5
I will try to answer both, with what i know......
You have to understand that Bert's oversize gears are Bert's, and no one elses. I asked them if the "oversize" referred to the diameter of the gear or the width of the teeth, he said the width of the teeth...
I do understand that Dan McEachern makes oversize gears that are over sized in diameter, to compensate for the spacing of the cam and crank depending on where the babbitt gets line bored....
I think we are discussing two different products...
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Gear engineering is a very complicated subject.It is easy to get terminology mixed up when first learning it.
One thing that is seldom mentioned when discussing over or under size gears is how it is done. It is process called "generating up or down" as the case may be.
Here is a URL that will explain most of the terms.
https://en.wikipedia.org/wiki/List_o...re#Pitch_angle