3/4 pink

[avruga]

hi avruga,

just to address your original post again.
iv taken a still from the first video on this thread with a pic of an actual 3/4 ball.
then the next two pics iv moved the white over 1/2 ball from the 3/4 in my video still to give you a more realistic view of what a 2/3 ball shot would look like on the table

3/4


----------------------------------------------------------------------------------------------------------------------

2/3



i can only think that you may have miss placed the white when setting up the shot

Okay, the 3/4 ball photo looks wider than 3/4 to me. The diagram looks fine.

The 2/3 shot, maybe it is, maybe half ball - I can't honestly say. The diagram for 2/3 certainly isn't - look at the centre of the pink and the edge of the white - that's a thick half-ball.

But this really isn't my argument.

Go back to your initial set-up of the 3/4 shot with the white on the cushion half way between pink and blue. From there the potting angle on the pink is 19.5 by my calculation whereas a 3/4 ball is supposed to be 14.5. This potting angle is that between the incoming white and the path of the OB toward the pocket. I admit this may change when you slide the white toward the pink but to pot it from there you aren't hitting an exact 3/4 ball.

My calculation takes into account the correct contact point but is complicated to explain here. As an approximation it's a little easier to imagine the following.

Set your position on the cushion for a 3/4 ball pink - using your 4x4 grid the pink is 4 squares in from the cushion and the white is 2 squares along the cushion. Imagine hitting the pink full ball and the path of the white is the hypotenuse of a right angled triangle with opp/adj sides of 2 and 4. The internal angle at the pink is tan-1(2/4) which is 26.57 deg. The potting line of the OB is 45 deg across the table from corner to opposite middle so the angle between the incoming white and the desired potting line is 45-26.57 = 18.43 deg. If you aim slightly wider at the 3/4 ball hit so you actually make the pot you widen this angle and I make it 19.5 deg.

This is an approximation but it does indicate that you have to aim at more than 18.5 deg to make the pot from this setup.

Seriously, I'm not knocking your potting - I just don't think the 4x4 grid works for the pink - the 1/2 ball and 3/4 balls are very close to lying on a 3x3 grid.

[j6uk]

Okay, the 3/4 ball photo looks wider than 3/4 to me. The diagram looks fine.
you think its wider but going by my diagram 3/4 ball you think it will pot right? and my diagram looks fine, can i take it that you believe me that its exactly 3/4 ball?

The 2/3 shot, maybe it is, maybe half ball - I can't honestly say. The diagram for 2/3 certainly isn't - look at the centre of the pink and the edge of the white - that's a thick half-ball.
ican say its not 1/2 or 3/4 ball, so we need to establish what are 3/4, 1/2 and soon. would you say 2/3 is inbetween 3/4 and 1/2?

But this really isn't my argument.
we can't go anywhere until we know what is a 3/4 or 1/2 ball

Go back to your initial set-up of the 3/4 shot with the white on the cushion half way between pink and blue. From there the potting angle on the pink is 19.5 by my calculation whereas a 3/4 ball is supposed to be 14.5. This potting angle is that between the incoming white and the path of the OB toward the pocket. I admit this may change when you slide the white toward the pink but to pot it from there you aren't hitting an exact 3/4 ball.

My calculation takes into account the correct contact point but is complicated to explain here. As an approximation it's a little easier to imagine the following.

Set your position on the cushion for a 3/4 ball pink - using your 4x4 grid the pink is 4 squares in from the cushion and the white is 2 squares along the cushion. Imagine hitting the pink full ball and the path of the white is the hypotenuse of a right angled triangle with opp/adj sides of 2 and 4. The internal angle at the pink is tan-1(2/4) which is 26.57 deg. The potting line of the OB is 45 deg across the table from corner to opposite middle so the angle between the incoming white and the desired potting line is 45-26.57 = 18.43 deg. If you aim slightly wider at the 3/4 ball hit so you actually make the pot you widen this angle and I make it 19.5 deg.

This is an approximation but it does indicate that you have to aim at more than 18.5 deg to make the pot from this setup.

Seriously, I'm not knocking your potting - I just don't think the 4x4 grid works for the pink - the 1/2 ball and 3/4 balls are very close to lying on a 3x3 grid.

you don't value mine so do you have some of your own diagrams? and can you show me what you see as 3/4 1/2 2/3 ?
can you sketch out where you think by using your math where a 3/4 ball pinkshould be?



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[Leo]

Okay, the 3/4 ball photo looks wider than 3/4 to me. The diagram looks fine.

The 2/3 shot, maybe it is, maybe half ball - I can't honestly say. The diagram for 2/3 certainly isn't - look at the centre of the pink and the edge of the white - that's a thick half-ball.

But this really isn't my argument.

Go back to your initial set-up of the 3/4 shot with the white on the cushion half way between pink and blue. From there the potting angle on the pink is 19.5 by my calculation whereas a 3/4 ball is supposed to be 14.5. This potting angle is that between the incoming white and the path of the OB toward the pocket. I admit this may change when you slide the white toward the pink but to pot it from there you aren't hitting an exact 3/4 ball.

My calculation takes into account the correct contact point but is complicated to explain here. As an approximation it's a little easier to imagine the following.

Set your position on the cushion for a 3/4 ball pink - using your 4x4 grid the pink is 4 squares in from the cushion and the white is 2 squares along the cushion. Imagine hitting the pink full ball and the path of the white is the hypotenuse of a right angled triangle with opp/adj sides of 2 and 4. The internal angle at the pink is tan-1(2/4) which is 26.57 deg. The potting line of the OB is 45 deg across the table from corner to opposite middle so the angle between the incoming white and the desired potting line is 45-26.57 = 18.43 deg. If you aim slightly wider at the 3/4 ball hit so you actually make the pot you widen this angle and I make it 19.5 deg.

This is an approximation but it does indicate that you have to aim at more than 18.5 deg to make the pot from this setup.

Seriously, I'm not knocking your potting - I just don't think the 4x4 grid works for the pink - the 1/2 ball and 3/4 balls are very close to lying on a 3x3 grid.

Christ almighty are we still on TSF

[barrywhite]

Christ almighty are we still on TSF

Yes, it's the The Stats Forum. lol

[tedisbill]

Christ almighty are we still on TSF

I missed a black today that was 234/2378 ball. Any chance you can start a thread for me covering this shot?

[itsnoteasy]

I missed a black today that was 234/2378 ball. Any chance you can start a thread for me covering this shot?

I think you need an Aim frame Ted.:nevreness:

[j6uk]

avruga is right in some of his calculations,and if hes right about the 3/4 ball then the white should come back to the same 3/4 place on the cushion..

[Leo]

I missed a black today that was 234/2378 ball. Any chance you can start a thread for me covering this shot?

The thread has completely lost me

[j6uk]

hi avruga,

just to address your original post again.
iv taken a still from the first video on this thread with a pic of an actual 3/4 ball.
then the next two pics iv moved the white over 1/2 ball from the 3/4 in my video still to give you a more realistic view of what a 2/3 ball shot would look like on the table

3/4


----------------------------------------------------------------------------------------------------------------------

2/3



i can only think that you may have miss placed the white when setting up the shot

this is my 2/3, the pic above that i loaded as a 2/3 is atually 5/8 inbetween 3/4 and 1/2. and 2/3 is 2/3 of a 1/16 over 5/8.
i cut and pasted the wrong image but im still not seeing my 3/4 shot as 2/3. though i believe rugas on to something and if so for the true 3/4 you would need to roll one ball over towards the blue from on the cush

[j6uk]

but as of now im not seeing this as 2/3. looks near jaw rattle every time

[j6uk]

The thread has completely lost me

dont worry youll find another thread to boogie to soon enough

[itsnoteasy]

If that's right ,will it also affect the pink into the middle from the black end that folk asked about?

[j6uk]

If that's right ,will it also affect the pink into the middle from the black end that folk asked about?

it would do..
if you start from the middle of the cushion and roll the white down to the first quarter but, but your rolling the cb towards the pink then it could look like 2/3 cus rolling it to the ob changes the angle. if you roll it to the 3/4 ghost ball as i say in the vids then its for me 3/4

[itsnoteasy]

I get you J, similar to how the angle changed on the 3/4 black video as you moved in closer to the black.

[avruga]

you don't value mine so do you have some of your own diagrams? and can you show me what you see as 3/4 1/2 2/3 ?
can you sketch out where you think by using your math where a 3/4 ball pinkshould be?
-

Here you go. Set the white up on these positions and try it please. Maybe even roll the white half a ball to the left for 1/2 and 3/4 ball but not much more.

Let me know what you think?