What is 1/2 a tip?

D

duckie

GregH
Silver Member
I keep seeing this reference in CTE discussions.

So, what is 1/2 a tip in real measurements?

Remember not all tips are the same diameter. A 13mm tip 1/2'd is 6.5mm, a 12mm tip 1/2'd is 6mm, a 12.5mm tip 1/2'd is 6.25mm and so on.

How can you do drawings that show measurements and angles but do not use a measurement for what a 1/2 a tip is?

So what is the real measurement for 1/2 a tip as applied to CTE?
 
That only applies to the manual version, and even then is an arbitrary distance, as discussed numerous times. The pivot can be as large as 1/2 ball, so minute differences in tip size have no bearing on the outcome. Which you would know if you tried it... :-)
Scott

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duckie said:
I keep seeing this reference in CTE discussions.

So, what is 1/2 a tip in real measurements?

Remember not all tips are the same diameter. A 13mm tip 1/2'd is 6.5mm, a 12mm tip 1/2'd is 6mm, a 12.5mm tip 1/2'd is 6.25mm and so on.

How can you do drawings that show measurements and angles but do not use a measurement for what a 1/2 a tip is?

So what is the real measurement for 1/2 a tip as applied to CTE?
Click to expand...

The most practical range in pool for a tip is 13mm to about 12mm. A mm is about this wide II - I I <----- that is about 13 mm - this is about 6mm ----> I I -

This is about 7mm -----> I I Can you see the difference? half a mm is half of this II

The diameter doesn't matter. A half tip is simply another way of saying come in just to the side of center and then pivot to center.

CTE pulls you into the shot so tightly that you almost can't be more than a mm off the actual shot line. So that's why the difference between a 13mm tip and 12mm doesn't mean anything.
 
Since speed of a hit does effect aiming.......can anyone define what a slow, medium, and hard hit is in terms of inches per second?

Slow, medium, and hard are all subjective terms. If you say a slow hit is xxx inches per second, it is now objective.

Has anyone really measured the speed of the CB as it hits the OB and a typical shot that comes up in pool and not a setup experiment that uses a speed never used during a game?

Reason I ask is has anyone measured that for a fact they are indeed moving the tip of the cue 1/2 the diameter of the tip, or is it just estimating?

Proving anything using math requires the use of real data, not subjective data such a 1/2 tip when there is no standard set for what a 1/2 tip is. Not all shaft tips are the same diameter.
 
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I read that half a tip is ALWAYS 6mm.

j/k, but as a note, the radius on the tip, I would guess, makes a larger difference than tip diameter....nickel radius as opposed to dime vs. 12mm or 13mm.
 
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owll said:
I read that half a tip is ALWAYS 6mm.

j/k, but as a note, the radius on the tip, I would guess, makes a larger difference than tip diameter....nickel radius as opposed to dime vs. 12mm or 13mm.
Click to expand...

Good info there.
Is the 1/2 tip offset with the butt hand stationary and the bridge hand moving to the side or is it a parallel shift, where the butt and the tip is moved ti the side the same 1/2 tip?
 
At one point in my life, I was a test engineer and had to deal with hardware, firmware and software engineers. I also had to set up field conditions to reproduce bugs reported from the field.

The first thing I learned was to have specifics in reporting bugs and test results to the engineers.

They wanted details, specifics, things that could be measured and reproduced.

I just apply this testing methodology to aiming systems. This is why 1/2 cue tip doesn't work. There are two many different size tips in use to be to use it as a overall standard for aiming.

Every aiming systems fails when real testing methods are applied to them.

Remember, GB Contact Patch and Impact Area are not aiming systems. If you were to check out some of the pool apps, you just might be surprised at how the aiming is done.
 
I pulled out a Moori once at a Waffle House and tried to give the waitress a $20 tip. She was not amused but the pool players were :-)
 
If we gave the you the secret cipher of how to figure what a half-tip pivot is and how it's measured we would have to be confident you were worthy of being trusted with that information.

As of now you are only at level one - seeker with no map - once you progress sufficiently someone who knows will enlighten you and then you will know what a half-tip pivot means in CTE.

For now, it's somewhere between your eyes.
 
LAMas said:
Good info there.
Is the 1/2 tip offset with the butt hand stationary and the bridge hand moving to the side or is it a parallel shift, where the butt and the tip is moved ti the side the same 1/2 tip?
Click to expand...

Radius doesn't matter because the point is to use the reference to get to center cueball. At center cue ball the apex of the curve is in the same position regardless of diameter.

This is the actual offset for half tip at both a nickel and dime radius at 13mm.

You can clearly see that the difference in contact position is less than a mm at between both radii.

None of which has the slightest effect on the PERCEPTION of a half-tip offset from the shooter's perspective of being about four feet away and two feet above the cue ball.

The half-tip pivot is more of an eyes-body position offset that allows the shooter to swing into center ball locked in on the shot line as given by the preceding steps.

I understand that Duckie and some others would like to see a bunch of equations that I guess they could run through a say ok now I see how CTE works, sorry for all the hassle.

It's ALL about perception using objective criteria. The more objective input you have, edges, centers, quarters, half-tip, the more you can tie this together into a consistent method of aiming.

It is not and likely never will be any sort of formula with measured instructions. Ghost ball is not that either. Even though you can make up tons of pretty diagrams showing GB aiming you don't actually use any math when applying it. Your DTD method is better than GB in that sense.

No, in GB you start off with an objective concrete thing and try to imagine where the center of a nonexistent phantom ball is from the center of the concrete thing. In CTE you start out with the same concrete thing, use another concrete thing to establish a relationship, fine tune the relationship and ultimately zero in to the second concrete thing about a half-tip off center to guide you into bridge hand placement.

You don't have know whether that "half-tip" is 6.5mm off center or 6 or 7. Only that it's there to guide you.
 
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