warhog...

Axis of rotation is the point at which the ball is spinning around measured from perpendicular to the lane. Axis tilt is the angle of rotation from the surface. Your right, I was just giving another explaination so I make sure I understand what you are saying.

yep, I got it now!

another way of looking at it is a bicycle, turning the handle bars is like axis rotation, leaning is like axis tilt.

Good analogy CoachJim! That is a great way to think about it.

i'm also confuse with this 2 things. Axis Tilt and Axis Rotation. how want to determine which is axis tilt and axis rotation? axis rotation is ball Track?

Both create your Track. CoachJim has a great analogy just above. Imagine the center of the ball is the tire on a bike, as you turn the wheel you are adding axis of rotation, as you lean to make a corner that is adding axis tilt.

Editted: found my answer :p

if not mistaken, if the ball have a side roll, that mean we have a high axis rotation isn't it?

if the Track so close to finger and thumb holes, that mean we have low axis tilt isn't it?

If I am not mistaken, axis tilt and axis of rotation are the same axis.
Axis of rotation is the axis about which the ball spins.
Axis tilt is the angle of the axis from the floor level (horizontal).


Happy bowling!