Spin vs Revolutions

[NewToBowling]

Ok, read this from one of the threads here on BB

http://www.bowlingboards.com/threads/8151-Scorpion-wrist-brace-What-did-this-teach-me?p=30375&viewfull=1#post30375
A stronger wrist(or using a brace) will let you get more revolutions, not spin, spin is created by rotating your hand around the ball at release, revolutions are created by cupping your wrist and un-cupping at release. Spin doesn't help your ball hook, revolutions do.


Kind of confused on spin vs revolutions. Are they different/same and is the statement above true?

Or is he referring to spin as helicopter spin where your hand is above the ball and spin it like a helicopter propeller. In that case I agree with him that this type of spin does nothing for hook.

[bowl1820]

Kind of confused on spin vs revolutions. Are they different/same and is the statement above true?

Or is he referring to spin as helicopter spin where your hand is above the ball and spin it like a helicopter propeller. In that case I agree with him that this type of spin does nothing for hook.

Basically Yes that's what he's referring too.

[NewToBowling]

Thats what I thought. Thanks

[Mike White]

Ok, read this from one of the threads here on BB

http://www.bowlingboards.com/threads/8151-Scorpion-wrist-brace-What-did-this-teach-me?p=30375&viewfull=1#post30375
A stronger wrist(or using a brace) will let you get more revolutions, not spin, spin is created by rotating your hand around the ball at release, revolutions are created by cupping your wrist and un-cupping at release. Spin doesn't help your ball hook, revolutions do.


Kind of confused on spin vs revolutions. Are they different/same and is the statement above true?

Or is he referring to spin as helicopter spin where your hand is above the ball and spin it like a helicopter propeller. In that case I agree with him that this type of spin does nothing for hook.

There are three measurements of the ball in terms of how it is rotating.

Rev Rate, Axis of Rotation, and Axis Tilt.

Lets take the front wheel of a bicycle as an analogy.

How fast you are traveling determines how fast the wheel is rotating. That is equivalent to rev rate for a bowling ball.

With the bicycle upright and the handle bars are straight, the axle is parallel to the ground, and perpendicular to the direction of the bike.

If you turn the handle bars left or right, the axle is still parallel to the ground, but no longer perpendicular to the direction of the bike, that is equivalent to axis of rotation.

Finally if you straight out the handle bars, and then lean the bike over, the axle is still perpendicular to the direction of the bike, but no longer parallel to the ground. That is equivalent to axis tilt.

Now that we've define those terms, spin as described above refers to axis tilt.

The ball hooks because of a combination of friction, rev rate, and axis of rotation, as you increase axis tilt, you delay when the ball hooks, possibly to the point where it doesn't hook at all (helicopter).

If you equate the bowling ball to the globe, with the top of the ball being the north pole, to spin the ball, the fingers are traveling mainly in a west to east direction as they exit the ball.

To create effective revs, the fingers travel in more of a south to north direction as they exit the ball.

[NewToBowling]

^ Great analogy

[rv driver]

There are three measurements of the ball in terms of how it is rotating.

Rev Rate, Axis of Rotation, and Axis Tilt.

Lets take the front wheel of a bicycle as an analogy.

How fast you are traveling determines how fast the wheel is rotating. That is equivalent to rev rate for a bowling ball.

With the bicycle upright and the handle bars are straight, the axle is parallel to the ground, and perpendicular to the direction of the bike.

If you turn the handle bars left or right, the axle is still parallel to the ground, but no longer perpendicular to the direction of the bike, that is equivalent to axis of rotation.

Finally if you straight out the handle bars, and then lean the bike over, the axle is still perpendicular to the direction of the bike, but no longer parallel to the ground. That is equivalent to axis tilt.

Now that we've define those terms, spin as described above refers to axis tilt.

The ball hooks because of a combination of friction, rev rate, and axis of rotation, as you increase axis tilt, you delay when the ball hooks, possibly to the point where it doesn't hook at all (helicopter).

If you equate the bowling ball to the globe, with the top of the ball being the north pole, to spin the ball, the fingers are traveling mainly in a west to east direction as they exit the ball.

To create effective revs, the fingers travel in more of a south to north direction as they exit the ball.
Thanks for that! Very effective!