Throw

[Bob Jewett]

Cueball throw or object ball. Cueball throw is tough to gauge on a neutral system due to many cue shafts perform differently. Object ball is the same. ...

I assume that in the first case you are using "throw" in the UK sense here, as a synonym for "squirt." Is that right? I prefer sticking with the definition:

Throw: When two object balls collide, the second ball does not always travel along the line of centers of the two balls at the instant of the collision. When the ball departs from that direction, it is said to be "thrown" and the shot is a "throw" shot. The throw can be due to spin on the first ball or due to the cut angle. In either case, the second ball is thrown because of the relative motion of the surface of the first ball across the second which allows ball-to-ball friction to pull the second ball off the ideal line.

 

[JimS]

Bob; Can't throw also be caused by dirt or chalk or some other contaminant on one of the balls causing them to stick together momentairly and consequently cause the object ball to not start rolling as it should. I'm not getting my terms mixed up here am I?

 

[DogsPlayingPool]

Bob; Can't throw also be caused by dirt or chalk or some other contaminant on one of the balls causing them to stick together momentairly and consequently cause the object ball to not start rolling as it should. I'm not getting my terms mixed up here am I?

Jim, I suppose you could say that but I believe any "throw" induced by contaminants on the balls (usually chalk on the CB) is usually referred to as skid or cling. Throw, normally associated with spin on the cue ball, will send the ball opposite the spin or cut (i.e. right english will throw the OB left). Cling or skid, on the other hand, will tend to throw the ball in the same direction as the cut.

Hope this makes sense. :wink:

 

[dr_dave]

Jim, I suppose you could say that but I believe any "throw" induced by contaminants on the balls (usually chalk on the CB) is usually referred to as skid or cling.

Agreed. For more info, see:

http://billiards.colostate.edu/threads/throw.html#cling​

Throw, normally associated with spin on the cue ball, will send the ball opposite the spin or cut (i.e. right english will throw the OB left).

The throw direction depends on both the amount of cut and the amount of spin. For more info, see:

http://billiards.colostate.edu/threads/throw.html#answers​

Cling or skid, on the other hand, will tend to throw the ball in the same direction as the cut.

The direction of throw doesn't change when there is "cling." "Cling" just means there will be more throw than normal, but still in the same direction. For more info, see the links above.

Regards,
Dave

 

[JimS]

CLIING! I knew there was another word I was hunting through my fevered brain trying to uncover.

Cling.. the balls cling together longer than they should and/or longer than the shooter would want and expect
and then that clinging together results in increased throw.

 

[dr_dave]

CLIING! I knew there was another word I was hunting through my fevered brain trying to uncover. And it's so hard... cling.. the balls cling together longer than they should or the shooter would want. And cling results in increased throw.

The balls don't "cling together" longer, they just have more friction than normal during the brief duration of contact (which isn't any longer than normal).

Regards,
Dave

 

[DogsPlayingPool]

The direction of throw doesn't change when there is "cling." "Cling" just means there will be more throw than normal, but still in the same direction. For more info, see the links above.

Regards,
Dave

I know what you are saying and I think I just didn't word it right. That's why I said "I hope this makes sense". lol.

What I meant was: say you are hitting a spot shot to the left corner pocket with the CB on the head spot and the OB on the foot spot. If you use right english it will throw the ball a bit farther left (i.e. right english throws the ball left, or opposite the spin). But if you shoot the same shot with no english and encounter skid or cling, the ball will get thrown to the right, missing the pocket towards the foot rail side.

Hope this makes sense. :grin-square:

 

[dr_dave]

What I meant was: say you are hitting a spot shot to the left corner pocket with the CB on the head spot and the OB on the foot spot. If you use right english it will throw the ball a bit farther left (i.e. right english throws the ball left, or opposite the spin).

... only if the amount of right spin is more than the "gearing amount;" otherwise, it will throw to the right. See Diagram 4 in my Jan '07 BD article. Also, more info can be found here:

http://billiards.colostate.edu/threads/throw.html#answers​

But if you shoot the same shot with no english and encounter skid or cling, the ball will get thrown to the right, missing the pocket towards the foot rail side.

It will get thrown to the right with no English, or with left (inside) English. It will get thrown more if there is cling.

Hope this makes sense. :grin-square:

Ditto! :grin:

Regards,
Dave

PS: All of this assumes you are hitting the OB in the same place for each shot (i.e., you are compensating for squirt and swerve perfectly).

 

[1hit1der]

I'm sure Dr Dave's articles are more comprehensive than mine, but I wrote up one on spin and one on throw for online-pool. Check them out and let me know what you think.

http://www.online-pool.com/tutorials