The 90 Degree Rule

  • Thread starter Thread starter Pin
  • Start date Start date
P

Pin

Guest
Who here uses the 90 degree rule?

If so, how much faith do you put in it?


I've only recently found out about it. Before that I used to cut by instinct.
That works fine sometimes, but a 'system' such as this would seem to help, at least to give a point of reference. If it's accurate.

So, is it? :confused:


Also, do you consider side English to change the angle, or is it only draw/follow?
 
I guess I don't use it since I don't know what your are talking about.

I heard a long time ago that draw and follow could be used to change the angle but have heard nothing about it recently. I don't find it useful but am open to other opinions. Side english does change the angle.
Ken in CT
 
Let me try to describe to you something I learned goofing around with english during practice.

Angled shot with inside (say right) english.

1] determine the amount of english (distance of tip from center of cue ball, say 1 cm)
2] draw a straight line from the pocket through the object ball. that is the normal aiming reference, point A.
3] from the aiming reference of the object ball, mark 1 cm to the left (opposite your inside english). Let's call it point B.
4] go back to the cue ball. with cue tip in the middle section (not necesarily dead center) of the cue ball, aim at point A.
5] move only your backhand (keep your bridge firm) towards your waist until your tip gets to 1 cm right english.
6] bingo!

We usually instinctively just adjust (estimate) the aim when we use inside english to a fuller angle. The procedure I described takes away guesswork.

Hope it helps!
 
Yeah after I read it a few times....lol. I have never heard of this.........I have always done it by feel. I just know how much to compensate from repeation. From learning to play and realizing why you missed the shot. So the next time you adjust.......or practice it until you get the feel for it.
 
pooltablemech said:
Yeah after I read it a few times....lol. I have never heard of this.........I have always done it by feel. I just know how much to compensate from repeation. From learning to play and realizing why you missed the shot. So the next time you adjust.......or practice it until you get the feel for it.
Click to expand...

I, too, still hit english by feel. I use two techniques in english - the backhand english and the other, with outright english (where the tip is on the english spot right when I aim). But I use this backhand english aiming in off nights - which are getting far too often!
 
ok, i have never gotten cocky in this forum, BUT......I checked out that link to the video clips and only have one thing to say. Does this guy wanna play some?
 
After reading Pin's post again I have to conclude that he is referring not to cutting the object ball into a pocket but the resulting path of the cue ball. In that case 90 degrees is a good approximation especially in severe cuts and draw and follow do indeed have an effect.

I'm more interested in getting the object ball into the pocket.
Ken in CT
 
90 dgs

START(
%A[4L6%BL7P8%CJ5O4%DL7N1%EM7P1%FK6P1%GK6N8%HM7N8%IL7O4%JK6M5
%KJ5P7%LJ5N2%MK6Q4%NJ5R0%OJ5M0%P]2R7%QP1N1%RZ4C1%WQ0N4%X[5N0
%Y[8O1%Z\8Q9%[[3D3%\[6M8%]T0M8%^[1G0
)END


Herehttp://endeavor.med.nyu.edu/~wei/pool/pooltable2.html

When played without spin [ stun ] the angle between the Qb path and the line to the pocket will always be 90 degrees. You change the angle by hitting lower or higher, ie topspin backspin.

the 90 degree rule gives you a reference point .


Gabber
 
Sputnik,

Good post on your description on the use of english. I think Bert Kinnister teaches something similar to what you're describing for inside english.

For extreme cuts, I use the infinite line for the cb. In other words, I look at where my cb has to be, ghost ball, and then look at the line the cb has to be on and aim on that line. I don't use the line for most routine shots. I subscribe to PTM's method for most of my shots, i.e., I rely on that little 'puter I call a brain.
 
Re: 90 dgs

Gabber said:

When played without spin [ stun ] the angle between the Qb path and the line to the pocket will always be 90 degrees. You change the angle by hitting lower or higher, ie topspin backspin.

the 90 degree rule gives you a reference point .
/B]
Click to expand...


After rereading pin’s post I think you’re right Gabber about what he is trying to ask. However, if he used the term tangent line instead, we’d probably be on the same page.

Rick
 
Heh. Yeah, that's what I meant by the 90 degree rule.
Unfortunately I'm still a month or so from being in Canada, so I only have tables here in England to experiment with.

I'll be trying Sputnik's system when I get over there though
 
Rickw said:
Sputnik,

Good post on your description on the use of english. I think Bert Kinnister teaches something similar to what you're describing for inside english.

For extreme cuts, I use the infinite line for the cb. In other words, I look at where my cb has to be, ghost ball, and then look at the line the cb has to be on and aim on that line. I don't use the line for most routine shots. I subscribe to PTM's method for most of my shots, i.e., I rely on that little 'puter I call a brain.
Click to expand...

Thanks bro. I was afraid nobody would understand my description without diagrams. My pleasure to share.
 
The significance of the 90 deg rule is knowing where the cue ball will go. This is insignificant info if the diamond system is not understood. The white ball bounces from rail to rail.
 
What's the diamond system?

I've read a bit about using them to aim, but not a whole system's worth...
 
You must log in or register to reply here.
Back
Top