View Single Post
Old 07-29-2015, 01:45 PM   #20
Pete
Senior Member
 
Pete's Avatar
 
Join Date: May 2010
Location: Wa.
Posts: 5,409
Default Re: Timing gear teeth...??

Quote:
Originally Posted by 1955cj5 View Post
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...
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
Pete is offline   Reply With Quote