Making an object ball jump...

Bill812

Bill812

Bill812
Silver Member
I'm not sure of the physics or mechanics of the shot, but my APA league team-mate showed me a shot he wanted me to try with him yesterday while we were practicing and I'd like to get a better understanding of how & why it works, as well as what are the limitations. So any insight would be greatly appreciated.
Basically the Cue Ball is about 10-12 inches from the object ball and a blocking ball about 10-12 inches in front of it. The idea is to drive the cueball into the Object ball causing it to jump over the blocking ball. We both were able to do it, but it isn't easy and the above distances seem to be ideal. Any closer and we couldn't make it happen. It's funny because the exact shot came up while we were playing and I was able to fire the object ball right over the blocker making the shot in the corner and went on to win the game. (Brian wasn't happy he showed me that shot at that moment.)Can anyone help with tips on technique when the distances change?
Thanks.
 
I'll be at Baileys Wednesday at noon. You gotta show me this cause I'd almost bet its not possible!!!! Just ask for Chris...

Range Rover Bill? Is that you? Welcome to the Forum man! You guys playing at Baileys Wednesday? I'd like to see this shot first hand!

Chris
 
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hdgis1 said:
I'll be at Baileys Wednesday at noon. You gotta show me this cause I'd almost bet its not possible!!!! Just ask for Chris...
Click to expand...

It is very possible. I have seen Charlie Bryant do it almost at will from varying distances.
 
There are two ways to accomplish making an OB jump. Both requie that the CB hit significantly above the equator (about 45 degree point being ideal), driving the initial energy vector into the slate, where it rebounds and drives the OB into the air. The physics is essentially just like that of jumping the CB. You need enough energy down into the OB to cause the unyielding slate to throw it up off the bed.

In one mode the CB is still rising as it makes contact with the OB. The energy of the rising CB is diminushed and its angle of departure increases. Its hard to get the OB to jump very high with this method and leave the CB on the table.

In the other mode, the CB is decending from a jump and hits the OB above the equator on the way down. The downward energy vector is reflected by the unyielding slate and causes the OB to rise off the bed of the slate. This absorbs most of the CB energy and it (somewhat) quitely settles back on the table as the OB flies up. {Most of the time}
 
object ball jump

Its very posible, but not a really easy shot. You have to hit the object ball with force. The cue ball will sorta have an affect as a jump cue has on a cue ball. I've played around with the shot and find 7 or 8 inches works well, although you can use pretty much any distance between lets say 3" to 18". Its tougher to keep the ball on the table the further you go.
 
As long as the cue ball is in the air at contact with the object ball, the object ball will leave the bed of the table........SPF=randyg
 
I agree with Randy and no you don't have to clobber this shot you can let the balls do most of the work if you hit the cue ball precisely it should make the ob hop you must land on the OB or hit it on the way up. It is possible to hop it over an entire ball. Just not smart for this you must smack it pretty hard.

The only time to really use this shot is if the OB is a little bit in the way and you are nearly or perfectly straight in...never lose the white ball and if you are jumping into ob and jumping them over balls it is best to have a straight in...or the cue ball might find the floor or a hole or a snooker...

There is a bank shot that can be used to jump balls, and when it is in line is only about a 5 on a scale of 1-10. I'm sure there are hundreds of videos on youtube demonstrating it...
 
Bill812 said:
[ ... Can anyone help with tips on technique when the distances change? ...
Click to expand...
There is the obvious connection: If you're getting too much hop, slow the speed down or lower the elevation. I think you want to play the shot with the minimum speed required, as others have suggested. This means that once you have the shot working, try a little more elevation and a little less speed and see if it still works.

Some distances just aren't practical. Start with a distance that works for you and try to extend in both directions.
 
I've managed to pick up a few drinks from time to time betting that I could make the object ball jump over an obstruction. As Randy said, if the cue ball is in the air when it hits the object ball, the object ball is going to jump.

Steve
 
MitchAlsup said:
There are two ways to accomplish making an OB jump. Both requie that the CB hit significantly above the equator (about 45 degree point being ideal), driving the initial energy vector into the slate, where it rebounds and drives the OB into the air. The physics is essentially just like that of jumping the CB. You need enough energy down into the OB to cause the unyielding slate to throw it up off the bed.

In one mode the CB is still rising as it makes contact with the OB. The energy of the rising CB is diminushed and its angle of departure increases. Its hard to get the OB to jump very high with this method and leave the CB on the table.

In the other mode, the CB is decending from a jump and hits the OB above the equator on the way down. The downward energy vector is reflected by the unyielding slate and causes the OB to rise off the bed of the slate. This absorbs most of the CB energy and it (somewhat) quitely settles back on the table as the OB flies up. {Most of the time}
Click to expand...
Thanks Mitch.
 
bayoubullet said:
Its very posible, but not a really easy shot. You have to hit the object ball with force. The cue ball will sorta have an affect as a jump cue has on a cue ball. I've played around with the shot and find 7 or 8 inches works well, although you can use pretty much any distance between lets say 3" to 18". Its tougher to keep the ball on the table the further you go.
Click to expand...
Thanks Bayou.
 
pooltchr said:
I've managed to pick up a few drinks from time to time betting that I could make the object ball jump over an obstruction. As Randy said, if the cue ball is in the air when it hits the object ball, the object ball is going to jump.

Steve
Click to expand...
Thanks Randy, Jamison, Bob & Steve.
 
Check out this video:


It explains how to hit the shots and shows super-slow-motion footage of the ball action.

Enjoy,
Dave

Bill812 said:
I'm not sure of the physics or mechanics of the shot, but my APA league team-mate showed me a shot he wanted me to try with him yesterday while we were practicing and I'd like to get a better understanding of how & why it works, as well as what are the limitations. So any insight would be greatly appreciated.
Basically the Cue Ball is about 10-12 inches from the object ball and a blocking ball about 10-12 inches in front of it. The idea is to drive the cueball into the Object ball causing it to jump over the blocking ball. We both were able to do it, but it isn't easy and the above distances seem to be ideal. Any closer and we couldn't make it happen. It's funny because the exact shot came up while we were playing and I was able to fire the object ball right over the blocker making the shot in the corner and went on to win the game. (Brian wasn't happy he showed me that shot at that moment.)Can anyone help with tips on technique when the distances change?
Thanks.
Click to expand...
 
This thread made me think up an artistic shot I have never seen executed.

Setup: Place an interfering OB about 1 diamond from a corner pocket. Place the to-be-jumped OB at an appropriate distance from the interfering OB. Place the CB wherever you like. Place a boot/bucket on the floor.

Cause the OB to jump the interfering ball, land in or roll into the pocket, and cause the CB to land in the boot in one stroke.
 
MitchAlsup said:
This thread made me think up an artistic shot I have never seen executed.

Setup: Place an interfering OB about 1 diamond from a corner pocket. Place the to-be-jumped OB at an appropriate distance from the interfering OB. Place the CB wherever you like. Place a boot/bucket on the floor.

Cause the OB to jump the interfering ball, land in or roll into the pocket, and cause the CB to land in the boot in one stroke.
Click to expand...

While it is not difficult to make the object ball jump, it would take an almost superhuman effort to make it jump that high and that far. Notice in Dave's video, the cb barely clears the ob.

Dave, How many takes did you have to shoot to get that one?

Steve
 
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pooltchr said:
While it is not difficult to make the object ball jump, it would take an almost superhuman effort to make it jump that high and that far. Notice in Dave's video, the cb barely clears the ob.

Dave, How many takes did you have to shoot to get that one?
Click to expand...
Actually, Tom Ross (my VEPS partner) was doing the shooting for that video. Tom's pretty good at these shots, but it still took him about 10-20 attempts if I remember right. This is more of a proposition or trick shot, and it requires dedicated practice. It's certainly not very common or practical in a game situation; although, Tom told me that he has used the technique in matches before to successfully clear a portion of a ball. Attempting to clear a full ball in a match would be quite desperate (and probably not very smart), IMO.

Regards,
Dave
 
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