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Cue Tip Press — First Compression By turning the tip press clockwise one half turn degrees the drive part of the chamber will compress the tip further on itself. Cue Tip Press — Second Compression By turning the tip press clockwise another half turn degrees we will have compressed the tip a total of degrees.
Cue Tip Press — Third Compression As the tip has already received a full compression, this is where it will be difficult to compress the tip too much further. Cue Tip Press — Classification Asked to give a personal classification of the tips pressed above I would agree with the following: The product is already in the wishlist!
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It takes a smooth level stroke. You will notice that it requires much more effort with the soft tip. In some cases, you may not be able to draw the ball back to the center of the table with the soft tip. Even if you never get the cueball back to the pocket, you will notice a distinct difference between the tips. To make the test even better, change the tips and use the same shaft for the test. All those tip changes eats up some time, but the results are more accurate.
Find all posts by cuebuilder. My advice is to skip right over all the single piece leather tips They simply keep their shape much better They're fairly similar from a playing standpoint but in my experience the WB is a hair softer and seems to wear a bit faster.
Rate This Thread Excellent. BB code is On. Contact Us - AzBilliards. Find all posts by Rpm. Find all posts by pawnmon. John "Doc" Stepek Cue: John Minteer JAM Rack Management Stay safe, stay true. Find all posts by Ronoh. Originally Posted by Ronoh Choosing a tip hardness also depends on what type of games you playing the most, and on what type of tables.
Find all posts by BryanJca. Originally Posted by Rpm What R the advantages and disadvantages to hard, medium or soft tips? Find all posts by Secaucus Fats. Another thing that might be different is that a shorter contact time is usually associated with a harder tip, and a harder tip might have better efficiency, so the CB might have slightly more speed with a given stroke with a harder tip for a given cue mass and speed.
And with more speed, less spin will be lost on the way to the OB or cushion, giving the impression that the hit created more spin. With an increase in tip contact time, the effective tip offset will be slightly greater because the tip will rotate out with the CB during contact , but this will also result in more squirt, which will diminish the effectiveness of the slightly larger tip offset.
For more info, see cue tip hardness effects and getting more spin with an LD shaft. Over what distance is the cue tip in contact with the cue ball on a typical shot? The contact distance is much smaller than most people think. For example, with a break shot with a very hard tip, a typical contact distance per TP B. With softer tips, the contact time and distance is longer.
With slower speed shots, the contact distance is shorter. The full video clip can be viewed at HSV A. The video was shot at frames per sec with a high-resolution color camera. Here's an isolated clip of the close-up of the tip contact:. The MS Word file is large 1. If you page down through the file to load all of the images, you can then use the scroll bar to simulate a flip-book animation. The faster you scroll, the faster the simulated "video" plays.
Contact lasts about 4 frames over frames , which corresponds to about two thousandths 0. See the following link for good examples of how the tip deforms and how the cue vibrates with both follow and draw shots. Here's another video comparing tip compression for various tip hardnesses. From the experiment in the video, the range of coefficients of restitution COR or e were between 0. The analysis at the bottom of TP A. It also shows how to simulate different CB speeds with cue drop tests.
For other effects related to tip hardness, see cue tip hardness effects. A shaft that is very flexible not very stiff , will tend to deform and vibrate more during and mostly after a hit. This vibration represents lost energy because that energy remains in the cue and is not delivered to the CB. For more info and demonstrations, see the cue vibration resource page.
There is general consensus that hard tips are more efficient give more cueball speed for a given stick speed than soft tips. Dave Alciatore Dr-Dave and Bob Jewett have done an experiment with clever apparatus they call Cue Stick Efficiency Tester with high-speed video for which this is a conclusion.
It is well known that we use hard leather and phenolic tips on break cues. I explain here the background, what I think is wrong with the measurements. I've brought up in the past a potential issue for cue tip efficiency with very hard tips. For maximum speed, the ball needs to "feel" the full weight of the cue. The tip-ball contact time for phenolic tips is less that 0. The speed of sound in maple is about 4 meters per millisecond, and therefore the time it takes for the ball to even begin to know about the back of the cue disturbance travels two stick lengths, about 3m is about 0.
So there is reason to believe that all else being equal a longer contact time might be better. Dave and Bob use as empirical evidence this is not a concern and as a demonstration showing hard tips are more efficient an experiment in which they drop cues with different tips onto a steel plate and measure how high they bounce.
Phenolic tips bounce higher than leather tips, and this, in essence, is the basis of their conclusion. Here is the problem: A stick dropped on steel does not have the same contact time as a stick hitting a ball. In fact, I estimate the tip-steel contact time to be about twice as long as the tip-ball contact time.
So for cues with phenolic tips dropped on steel, the disturbance has time to travel about four cue lengths during contact rather than just two. This is a critical difference. The compression and relaxation of the tip during a collision can be approximately modeled as a harmonic spring, at least for the purpose to determining the effect of mass on the contact time.
What is M for a stick-ball collision? For a 6oz ball and 18 oz stick, the reduced mass is about three quarters the mass of a ball, 4. For an 18 oz stick hitting a rigid steel plate large mass , the reduced mass is the mass of the stick, 18 oz. This is four times the reduced mass of the stick-ball combination. Because the contact time goes as the square root of the reduced mass, the contact for the drop test is expected to be twice that of a stick-ball collision.
You bring up some good points. I would be curious to see some test results that demonstrate these effects. Maybe you can come up with a simple test that will simulate a ball strike.
The efficiency depends on many things: Concerning the effects of shot speed and tip hardness on tip contact time, see the tip contact time resource page. How much force is generated between the tip and the cue ball during a break shot, and what would it take to generate a "ton" of force at the tip? As another example, and to keep things simple, let's use a cue weight of 18 oz and assume a perfect tip with a center-ball hit.
For this case, TP A. Let's also assume that the average force during tip contact is about half the peak force. And let's assume the tip is in contact with the ball for 0. For a given duration of contact dt , this momentum must equal the impulse delivered from the cue:. What differences does tip hardness make, and does it affect how much spin can be applied, or the amount of squirt that results?
There is no question that a harder tip "feels" different and provides different "feedback" a softer tip typically dampens the impact a little and the force of the hit isn't felt as strongly. It is also true that a harder tip can result in a more efficient hit , providing more speed to the CB for a given cue speed. And it is true that with slower CB speed, more backspin will wear off on the way to the OB with a draw shot and more sidespin will wear off on the way to the cushion with a sidespin shot especially on slow and sticky cloth with slower shot speed.
These effects might make it seem like a softer tip is applying less spin to the CB. Regardless, the quality of spin i. The physics on this is very clear. If anybody doubts this, they should do a careful and objective experiment to compare any tips they think would produce different results.
For those who have math and physics backgrounds and are interested, the physics showing how the spin-to-speed ratio depends only on tip offset from center, even when accounting for tip efficiency, can be found in TP A. Some people think that because a soft tip stays in contact with the CB slightly longer see contact time , a soft tip can apply more spin.
However, see Bob Jewett's comments below. Also, the contact time is still extremely small with both a soft and hard tip: Assuming the CB speed is the same in all comparisons, even though the peak force will be different more with the shorter contact time , the amount of momentum linear and angular transferred to the CB will still be the same because the sum of force over contact time is the same in both cases. The CB doesn't move much translation or spin during the extremely small contact time, so the only significant factor is the tip contact point at impact.
Now, it is possible that a hard tip, especially if it is not holding chalk very well, will have a miscue limit closer to the center than a soft tip that is holding chalk well. In this case, the soft tip will enable a player to apply more spin to the CB since the tip contact point can be farther from the CB's center without resulting in a miscue.