Originally Posted by disston
The 17.5 gears are supposed to have an X on them. I have heard the same thing SS mentions that there are a few with no X but are X gears. You usually can't see the X until the gear is off the shaft.
I didn't know before that the angle is a reference to the sharpness of the teeth and not the slant of the teeth. I thought it was the slant.
A lot of people think that. That's how the gears get mixed in some cases. That's why some people talk about the changed PFA effecting end play and axial load. It doesn't. What it effects is where each individual tooth along the height of the tooth contacts the next tooth and transfers the load.