Go Back   AzBilliards.com > Main Category > Main Forum
Reload this Page (FAQ) How do you use the tangent line?
Reply
Page 1 of 19 1 2311 Last »
 
Share Thread Tools Rate Thread
(FAQ) How do you use the tangent line?
Old
  (#1)
allanpsand
Author & PBIA Instructor
allanpsand has a reputation beyond reputeallanpsand has a reputation beyond reputeallanpsand has a reputation beyond reputeallanpsand has a reputation beyond reputeallanpsand has a reputation beyond reputeallanpsand has a reputation beyond reputeallanpsand has a reputation beyond reputeallanpsand has a reputation beyond reputeallanpsand has a reputation beyond reputeallanpsand has a reputation beyond reputeallanpsand has a reputation beyond repute
 
allanpsand's Avatar
 
Status: Offline
Posts: 386
vCash: 500
iTrader: 0 / 0%
Blog Entries: 4
Join Date: Mar 2005
Location: Santa Clara, CA
  Send a message via AIM to allanpsand Send a message via Yahoo to allanpsand  
(FAQ) How do you use the tangent line? - 05-07-2016, 02:17 PM

Howdy folks -

Here's some good advice to help new players use real-world physics to control what they can do with the cue ball (from my book, "FAQs of Pool").

http://www.billiardgods.com/gk-use-tangent-line/

It's a good idea to share stuff l like this with them. We all need to ensure good competitors in the future!!!

Good luck - shoot straight


Allan P. Sand, PBIA/ACS Instructor & Author

Biggest Pool Blog on the Planet!!
  
Reply With Quote

Old
  (#2)
justadub
Rattling corners nightly
justadub has a reputation beyond reputejustadub has a reputation beyond reputejustadub has a reputation beyond reputejustadub has a reputation beyond reputejustadub has a reputation beyond reputejustadub has a reputation beyond reputejustadub has a reputation beyond reputejustadub has a reputation beyond reputejustadub has a reputation beyond reputejustadub has a reputation beyond reputejustadub has a reputation beyond repute
 
justadub's Avatar
 
Status: Offline
Posts: 8,668
vCash: 1100
iTrader: 1 / 100%
Join Date: Dec 2009
Location: Bangor, Maine
   
05-07-2016, 02:26 PM

While I consider myself pretty much a hack, its always fun showing newer players cool stuff, and the look on their faces when you can show them the tangent line, and it makes a ball for them.....priceless.


Player: McDermott G203
Break: J & J 2729

"Let's all pile into the sandbagging wahmbulance and talk about it forever and hold each other until the tears dry!" CreeDo

"Just remember to put the troll back under the bridge when you're done playing with him, Dub!" BrokeStroke
  
Reply With Quote
Old
  (#3)
Scott Lee
AzB Silver Member

Scott Lee has a reputation beyond reputeScott Lee has a reputation beyond reputeScott Lee has a reputation beyond reputeScott Lee has a reputation beyond reputeScott Lee has a reputation beyond reputeScott Lee has a reputation beyond reputeScott Lee has a reputation beyond reputeScott Lee has a reputation beyond reputeScott Lee has a reputation beyond reputeScott Lee has a reputation beyond reputeScott Lee has a reputation beyond repute
 
Status: Offline
Posts: 16,241
vCash: 4100
iTrader: 11 / 100%
Join Date: Mar 2004
Location: Now living in Largo FL
   
05-07-2016, 03:26 PM

That needs some clarification Allen. The CB only leaves at 90 when the CB is sliding into contact with the OB. At slower speeds the CB will be rolling when it contacts the OB (unless the distance between CB & OB is very close), and will leave at 30 degrees, not 90.

Scott Lee
http://poolknowledge.com

Regardless of the speed of the cue ball and the angle that the cue ball and object ball contact, the cue ball will travel away from the object ball and the contact point between them at right angles.


PBIA Master Instructor
  
Reply With Quote
Old
  (#4)
allanpsand
Author & PBIA Instructor
allanpsand has a reputation beyond reputeallanpsand has a reputation beyond reputeallanpsand has a reputation beyond reputeallanpsand has a reputation beyond reputeallanpsand has a reputation beyond reputeallanpsand has a reputation beyond reputeallanpsand has a reputation beyond reputeallanpsand has a reputation beyond reputeallanpsand has a reputation beyond reputeallanpsand has a reputation beyond reputeallanpsand has a reputation beyond repute
 
allanpsand's Avatar
 
Status: Offline
Posts: 386
vCash: 500
iTrader: 0 / 0%
Blog Entries: 4
Join Date: Mar 2005
Location: Santa Clara, CA
  Send a message via AIM to allanpsand Send a message via Yahoo to allanpsand  
05-07-2016, 03:41 PM

The cue ball will ALWAYS leave the contact point at 90 degrees. How far the ball stays on the tangent line is a matter of the cue ball speed and action.

At high speeds, the cue ball will not have traction on the cloth and will exactly follow the tangent line. Only when it slows down can it interact with the cloth and curve off the line.

The trick is to learn how to predict exactly where on the tangent line that the curve begins and how much it bends.

In 3-cushion billiards, the top players have completely mastered these curves and all their variations. Most of the time, when they shoot into the first ball, it travels straight into the rail. The cue ball speed and spin determines where it hits the first cushion in the shot.


Allan P. Sand, PBIA/ACS Instructor & Author

Biggest Pool Blog on the Planet!!
  
Reply With Quote
Old
  (#5)
JoeyA
Efren's Mini-Tourn BACKER
JoeyA has a reputation beyond reputeJoeyA has a reputation beyond reputeJoeyA has a reputation beyond reputeJoeyA has a reputation beyond reputeJoeyA has a reputation beyond reputeJoeyA has a reputation beyond reputeJoeyA has a reputation beyond reputeJoeyA has a reputation beyond reputeJoeyA has a reputation beyond reputeJoeyA has a reputation beyond reputeJoeyA has a reputation beyond repute
 
JoeyA's Avatar
 
Status: Offline
Posts: 22,438
vCash: 1300
iTrader: 2 / 100%
Join Date: Apr 2003
   
05-07-2016, 05:06 PM

Hmmmmmmmmmm.

Quote:
Originally Posted by Scott Lee View Post
That needs some clarification Allen. The CB only leaves at 90 when the CB is sliding into contact with the OB. At slower speeds the CB will be rolling when it contacts the OB (unless the distance between CB & OB is very close), and will leave at 30 degrees, not 90.Scott Leehttp://poolknowledge.com Regardless of the speed of the cue ball and the angle that the cue ball and object ball contact, the cue ball will travel away from the object ball and the contact point between them at right angles.
Quote:
Originally Posted by allanpsand View Post
The cue ball will ALWAYS leave the contact point at 90 degrees. How far the ball stays on the tangent line is a matter of the cue ball speed and action.

At high speeds, the cue ball will not have traction on the cloth and will exactly follow the tangent line. Only when it slows down can it interact with the cloth and curve off the line.
The trick is to learn how to predict exactly where on the tangent line that the curve begins and how much it bends. In 3-cushion billiards, the top players have completely mastered these curves and all their variations. Most of the time, when they shoot into the first ball, it travels straight into the rail. The cue ball speed and spin determines where it hits the first cushion in the shot.


"I would rather not deal with such questions, because it's like shearing a piglet—a lot of squealing and little wool."
  
Reply With Quote
Old
  (#6)
EddieBme
AzB Silver Member
EddieBme has a reputation beyond reputeEddieBme has a reputation beyond reputeEddieBme has a reputation beyond reputeEddieBme has a reputation beyond reputeEddieBme has a reputation beyond reputeEddieBme has a reputation beyond reputeEddieBme has a reputation beyond reputeEddieBme has a reputation beyond reputeEddieBme has a reputation beyond reputeEddieBme has a reputation beyond reputeEddieBme has a reputation beyond repute
 
Status: Offline
Posts: 462
vCash: 500
iTrader: 4 / 100%
Blog Entries: 1
Join Date: Oct 2012
Location: Texas
   
05-07-2016, 05:07 PM

Quote:
Originally Posted by allanpsand View Post
Howdy folks -

Here's some good advice to help new players use real-world physics to control what they can do with the cue ball (from my book, "FAQs of Pool").

http://www.billiardgods.com/gk-use-tangent-line/

It's a good idea to share stuff l like this with them. We all need to ensure good competitors in the future!!!

Good luck - shoot straight
Good information, at a great price.
  
Reply With Quote
Old
  (#7)
Scott Lee
AzB Silver Member

Scott Lee has a reputation beyond reputeScott Lee has a reputation beyond reputeScott Lee has a reputation beyond reputeScott Lee has a reputation beyond reputeScott Lee has a reputation beyond reputeScott Lee has a reputation beyond reputeScott Lee has a reputation beyond reputeScott Lee has a reputation beyond reputeScott Lee has a reputation beyond reputeScott Lee has a reputation beyond reputeScott Lee has a reputation beyond repute
 
Status: Offline
Posts: 16,241
vCash: 4100
iTrader: 11 / 100%
Join Date: Mar 2004
Location: Now living in Largo FL
   
05-07-2016, 05:17 PM

JoeyA...Not sure why you quoted me, with the red bolded info...which I don't paricularly agree with.

Scott Lee
http://poolknowledge.com

Quote:
Originally Posted by JoeyA View Post
Hmmmmmmmmmm.


PBIA Master Instructor
  
Reply With Quote
Old
  (#8)
croscoe
Looking to Improve
croscoe has a reputation beyond reputecroscoe has a reputation beyond reputecroscoe has a reputation beyond reputecroscoe has a reputation beyond reputecroscoe has a reputation beyond reputecroscoe has a reputation beyond reputecroscoe has a reputation beyond reputecroscoe has a reputation beyond reputecroscoe has a reputation beyond reputecroscoe has a reputation beyond reputecroscoe has a reputation beyond repute
 
Status: Offline
Posts: 363
vCash: 500
iTrader: 7 / 100%
Join Date: Nov 2013
Location: Maine
   
05-07-2016, 06:17 PM

He "quoted " your post 3 Scott.

As such the red along with your signature & site info is included.

As to what is implied by it is another question.
  
Reply With Quote
Old
  (#9)
SilverCue
Sir Raksalot
SilverCue has a reputation beyond reputeSilverCue has a reputation beyond reputeSilverCue has a reputation beyond reputeSilverCue has a reputation beyond reputeSilverCue has a reputation beyond reputeSilverCue has a reputation beyond reputeSilverCue has a reputation beyond reputeSilverCue has a reputation beyond reputeSilverCue has a reputation beyond reputeSilverCue has a reputation beyond reputeSilverCue has a reputation beyond repute
 
Status: Offline
Posts: 741
vCash: 500
iTrader: 0 / 0%
Join Date: Feb 2015
Location: Maryland
   
05-07-2016, 06:28 PM

http://poolknowledge.com

Regardless of the speed of the cue ball and the angle that the cue ball and object ball contact, the cue ball will travel away from the object ball and the contact point between them at right angles.

Where is the tangent line travel when shooting straight on with follow or draw?


I find that I can do a lot of things that I didn't know how to do before I started.

If you're not part of the solution, you're part of the problem.

1 R030 Bocote wood Schmelke Custom Cue.
1 Dominiak w/Jacoby Hybrid Edge shaft.
1 Adams used for breaking.
1 McDermont C-11 (retired for now).

Al
  
Reply With Quote
Old
  (#10)
couldnthinkof01
AzB Silver Member
couldnthinkof01 has a reputation beyond reputecouldnthinkof01 has a reputation beyond reputecouldnthinkof01 has a reputation beyond reputecouldnthinkof01 has a reputation beyond reputecouldnthinkof01 has a reputation beyond reputecouldnthinkof01 has a reputation beyond reputecouldnthinkof01 has a reputation beyond reputecouldnthinkof01 has a reputation beyond reputecouldnthinkof01 has a reputation beyond reputecouldnthinkof01 has a reputation beyond reputecouldnthinkof01 has a reputation beyond repute
 
couldnthinkof01's Avatar
 
Status: Offline
Posts: 1,699
vCash: 500
iTrader: 0 / 0%
Join Date: May 2013
   
05-07-2016, 07:02 PM

Lol, if you calculate the EXACT angle of every shot on purpose before you get down good luck.

30/90 to show a beginner is great fun.

I think they will get the idea

Dr. Dave has had this info up for years in great detail

Practice and brain do the rest for you

Last edited by couldnthinkof01; 05-07-2016 at 07:05 PM.
  
Reply With Quote
Old
  (#11)
PocketPooler
...............
PocketPooler has a reputation beyond reputePocketPooler has a reputation beyond reputePocketPooler has a reputation beyond reputePocketPooler has a reputation beyond reputePocketPooler has a reputation beyond reputePocketPooler has a reputation beyond reputePocketPooler has a reputation beyond reputePocketPooler has a reputation beyond reputePocketPooler has a reputation beyond reputePocketPooler has a reputation beyond reputePocketPooler has a reputation beyond repute
 
PocketPooler's Avatar
 
Status: Offline
Posts: 938
vCash: 1700
iTrader: 4 / 100%
Join Date: Sep 2013
   
05-07-2016, 07:07 PM

Quote:
Originally Posted by SilverCue View Post
http://poolknowledge.com

Regardless of the speed of the cue ball and the angle that the cue ball and object ball contact, the cue ball will travel away from the object ball and the contact point between them at right angles.

Where is the tangent line travel when shooting straight on with follow or draw?
The tangent line always remains 90 degrees or perpindicular to the contact point on object ball. A ball hit straight on with follow or draw still has this tangent line, but all the energy with a full ball hit is transferred to the object, thus the cueball does not travel left or right (on the tangent) because it has transferred it's momentum to the object ball.
  
Reply With Quote
Old
  (#12)
Quesports
AzB Silver Member
Quesports has a reputation beyond reputeQuesports has a reputation beyond reputeQuesports has a reputation beyond reputeQuesports has a reputation beyond reputeQuesports has a reputation beyond reputeQuesports has a reputation beyond reputeQuesports has a reputation beyond reputeQuesports has a reputation beyond reputeQuesports has a reputation beyond reputeQuesports has a reputation beyond reputeQuesports has a reputation beyond repute
 
Status: Offline
Posts: 4,364
vCash: 500
iTrader: 15 / 100%
Join Date: Feb 2004
   
05-07-2016, 07:44 PM

I use the tangent line to catch fish.
  
Reply With Quote
Old
  (#13)
RiverCity
AzB Silver Member
RiverCity has a reputation beyond reputeRiverCity has a reputation beyond reputeRiverCity has a reputation beyond reputeRiverCity has a reputation beyond reputeRiverCity has a reputation beyond reputeRiverCity has a reputation beyond reputeRiverCity has a reputation beyond reputeRiverCity has a reputation beyond reputeRiverCity has a reputation beyond reputeRiverCity has a reputation beyond reputeRiverCity has a reputation beyond repute
 
RiverCity's Avatar
 
Status: Offline
Posts: 6,238
vCash: 500
iTrader: 32 / 100%
Join Date: Apr 2006
   
05-07-2016, 07:47 PM

Quote:
Originally Posted by Quesports View Post
I use the tangent line to catch fish.
Thats called a trotline..... not tangent line......
  
Reply With Quote
Old
  (#14)
ENGLISH!
Banned
ENGLISH! has a reputation beyond reputeENGLISH! has a reputation beyond reputeENGLISH! has a reputation beyond reputeENGLISH! has a reputation beyond reputeENGLISH! has a reputation beyond reputeENGLISH! has a reputation beyond reputeENGLISH! has a reputation beyond reputeENGLISH! has a reputation beyond reputeENGLISH! has a reputation beyond reputeENGLISH! has a reputation beyond reputeENGLISH! has a reputation beyond repute
 
Status: Offline
Posts: 19,489
vCash: 500
iTrader: 1 / 100%
Blog Entries: 1
Join Date: Jun 2012
   
05-07-2016, 08:45 PM

Quote:
Originally Posted by PocketPooler View Post
The tangent line always remains 90 degrees or perpindicular to the contact point on object ball. A ball hit straight on with follow or draw still has this tangent line, but all the energy with a full ball hit is transferred to the object, thus the cueball does not travel left or right (on the tangent) because it has transferred it's momentum to the object ball.
While Mr. Sand is technically correct & Scott Lee is technically incorrect as he worded it, I understand what you mean here, but a small nit is that spin is a form of force that can put momentum onto the CB when 'mixed' with friction to garner traction.

In other words, if ALL of the momentum was transferred to the OB the CB would stop dead & have no movement, but ALL of the spin 'momentum' is not transferred to the OB so the spin that remains on the CB is what sends it in one of the two directions based on the spin direction.

Just I very little nit.

All Best Wishes for ALL.

Last edited by ENGLISH!; 05-11-2016 at 07:29 PM.
  
Reply With Quote
Old
  (#15)
Neil
AzB Silver Member
Neil has a reputation beyond reputeNeil has a reputation beyond reputeNeil has a reputation beyond reputeNeil has a reputation beyond reputeNeil has a reputation beyond reputeNeil has a reputation beyond reputeNeil has a reputation beyond reputeNeil has a reputation beyond reputeNeil has a reputation beyond reputeNeil has a reputation beyond reputeNeil has a reputation beyond repute
 
Status: Offline
Posts: 17,598
vCash: 2200
iTrader: 2 / 100%
Join Date: Jan 2007
   
05-07-2016, 09:00 PM

Quote:
Originally Posted by ENGLISH! View Post
While Mr. Sand is technically correct & Scott Lee is technically incorrect as he worded it, I understand what you mean here, but a small nit is that spin is a form of force that can put momentum onto the CB when 'mixed' with friction to garner traction.

In other words, if ALL of the momentum was transferred to the OB the CB would stop dead & have no movement, but ALL of the spin 'momentum' is not transferred to the OB so the spin that remains on the CB is what sends it in one of the two directions based on the spin direction.

Just I very little nit.

All Best Wishes for ALL.
If it is hit dead square with spin, the cb won't go anywhere. It will just sit there and spin.
  
Reply With Quote
Reply
Page 1 of 19 1 2311 Last »

Thread Tools
Rate This Thread
Rate This Thread:

Posting Rules
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is Off

Forum Jump



Powered by vBulletin® Version 3.8.9
Copyright ©2000 - 2020, vBulletin Solutions, Inc.
vBulletin Security provided by vBSecurity (Lite) - vBulletin Mods & Addons Copyright © 2020 DragonByte Technologies Ltd.