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How to visualize "skid"?
- Thread starter weakfingers
- Start date
ChrisBanks
Banned
Using my method, you will WELCOME the skid. And not fear it!
The only time I'm aware of an OB curving is after hitting the rail or another OB.
pj
chgo
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Any time a ball is rolling with additional off axis spin , it will curve.
Generally a 'skidded' ball rolls pretty straight as after the skid, friction from the cloth will pretty much get it rolling end over end in its final line of direction.
Now if your 'spinning' into the OB and it takes on any of that off axis spin , then it may curve slightly depending on the specifics of the off axis rotation/spin transferred.
"IMO"
Not that it really matters but I think what you're attempting to describe is against the laws a physics. In your example, you have two forces impacting the OB certainly, however you cannot impose greater vertical force against the OB than horizontal (assuming the cue ball is the same size). The horizontal force is greater than the OB therefore it will "skid" until the frictional force of the cloth increases to a degree where it invokes OB roll.
I had a very interesting thing happen the other night. I was finishing up the drywall work in the room my table sits in. The table was covered throughout the entire sanding operation, and I was getting pretty antsy to hit a few balls before I went to bed. I swept the room and vacuumed everything very thoroughly, took the cover outside to shake out the dust and carried it up to the laundry room for washing. Then I went back downstairs to hit some random balls.
The cloth had just been vacuumed before I covered it, and I was happy to see that the cover had done its job. I quickly took the balls out of the pockets and tossed them up to roll on the cloth. That's when I noticed little white trails behind most of the balls. Yup, the dust had filtered up through the openings in the leather pockets and gotten all over the balls!
I was furious with myself, but the damage was already done so I decided to take my revenge on the balls. I got the weirdest skids I ever saw. A few times I missed the pocket by a full diamond on a very carefully aimed ball! The distinct clucking sound of the balls as they stuck together accompanied each odd miss - sure sign of a skidding ball.
Like much of the billiard nomenclature, I think the use of the word "skid" causes a lot of confusion. I look at it like a car skidding through a turn on ice. You really mean for the car to take the desired turn, but it shocks you by going straighter than you planned. Obviously there are very different causes for the two phenomena, but the feeling, "Uh-oh... WTF is happening here?" is the same. You feel sure the ball is headed right for the pocket, but the path deviates immediately after contact.
The player can tell this better than anybody else can see it because the ball clearly seems to have a mind of its own, very different from what you were sure it would do when you stroked the CB. And yes, that'll make you jump up on the shot for sure.
It takes a brave man to tell the world about his skid marks.
I tip my hat to your bravery.
Jimmy Reid
US Open 9 Ball Champion
Three things can cause a ball to skid : dirt, moisture, or when the cueball is hit so lightly with alot of spin that the spin grabs the object ball and causes the object ball to skid.
skid
I saw three different misses by team USA caused by skid. The one Dechaine shot that was commented on really skidded badly. I think it skidded like 6 inches. Personally i see the most skid in my shooting when i use top outside and don't hit it crisp. I think team Europe noticed the shots i saw and were taking skid out of play by hitting their shots with more a little more pace.
I saw three different misses by team USA caused by skid. The one Dechaine shot that was commented on really skidded badly. I think it skidded like 6 inches. Personally i see the most skid in my shooting when i use top outside and don't hit it crisp. I think team Europe noticed the shots i saw and were taking skid out of play by hitting their shots with more a little more pace.
Too early in the morning?
Did you get the OB and the CB backward in your comment or is it just too early in the morning for my old brain?
Did you get the OB and the CB backward in your comment or is it just too early in the morning for my old brain?
I'm not Pat, but.... When the cue ball hits the object ball the object ball usually moves away from the collision with very little spin. That means it only has a little side spin (if any) and maybe a touch of follow or draw. That means that the object ball is initially sliding. Dr. Dave has high-speed videos of this. By rubbing on the cloth, the object ball gradually over time acquires forward roll and also slows down.
The path of the object ball on anything close to a normal shot and even with the usual skid/cling/kick/bad-contact shot is not a curve. It is in a straight line from it's original point of rest. Throw or skid/c/k/b-c can cause that straight line to be at an angle from the line of centers of the balls at the moment of contact, but the path is a straight line at a different angle.
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Bob explained what I meant very well. Does that clear it up for you?
pj
chgo
Bob....''when the cue ball hits the obj. ball'' Yeah, but cue balls also come across or swipe the obj ball, and the angle, and speed and dirt at both contacts points will dramatically effect the outcome, sometimes more on one ball than both. The word hit is too Vague.