Which cue setup has more deflection?

Say you have a 58 inch 19 oz cue and you want to add 8 inches of overall length.

Which setup would result in more cuing deflection for this cue?

1. An 8 inch, 2.5 oz shaft extension
2. An 8 inch, 2.5 oz butt extension
Neither. Only the mass of the first several inches at the tip affects squirt.
FYI to those interested, detailed information for why cue extensions do not change CB deflection characteristics of a shaft or cue, see:

shaft endmass and stiffness effects

what causes squirt?

Now, if you add weight with an extension and use the same stroke for a given shot, there will be more CB speed and less swerve (but the same amount of squirt), so the net CB deflection will be more. For more info, see:

CB deflection speed effects

Enjoy,
Dave
 
FYI to those interested, detailed information for why cue extensions do not change CB deflection characteristics of a shaft or cue, see:

shaft endmass and stiffness effects

what causes squirt?

Now, if you add weight with an extension and use the same stroke for a given shot, there will be more CB speed and less swerve (but the same amount of squirt), so the net CB deflection will be more. For more info, see:

CB deflection speed effects

Enjoy,
Dave

Wouldn't your bridge length have an effect? If you use an extension, you are usually increasing your bridge lenght, because you need the extra reach for a particular shot.

When you are finding the pivot point of a cue, you are looking for the point where swerve cancels the squirt at a given speed, is it not? So using that for a basis, bridge length should affect squirt?
 
Wouldn't your bridge length have an effect?
Nope.

When you are finding the pivot point of a cue, you are looking for the point where swerve cancels the squirt at a given speed, is it not?
No, you're looking for the pivot point where your cue's angle in one direction = the squirt angle in the other direction (compensating for squirt only, not for swerve).

pj
chgo
 
Wouldn't your bridge length have an effect?
... not on the amount of squirt the shaft produces. See:

squirt bridge length effects


If you use an extension, you are usually increasing your bridge lenght, because you need the extra reach for a particular shot.

When you are finding the pivot point of a cue, you are looking for the point where swerve cancels the squirt at a given speed, is it not? So using that for a basis, bridge length should affect squirt?
Bridge length does not affect squirt; but if you are aiming in a way that relies on a certain bridge length (e.g., BHE and/or FHE) and you change bridge length, then you are correct, the aim will be wrong. But it will also be wrong if you change anything else (speed, shot distance, cue elevation, conditions, etc.).

Regards,
Dave
 
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I was going to post an answer but after reading all the bullshit everybody else posted I forgot what I was going to say.
 
I was going to post an answer but after reading all the bullshit everybody else posted I forgot what I was going to say.
Why was everything else bullshit? The OP's question looked to be fairly clearly answered and explained.
 
Wouldn't this mean people who use an open bridge should get more miscues? Wouldn't that mean if they don't get more miscues they're not hitting as far from centerball (i.e., getting less spin)?

You have far more control over your own hand than you do a piece of leather, plastic, or metal. The pressed leather rest head is the easiest to control out of those as the shaft doesn't slide as much. Plastic heads are the worst in my experience.
 
Why was everything else bullshit? The OP's question looked to be fairly clearly answered and explained.

Comedy. Humor.

Here is the correct answer which I normally reserve for my pay website which all the top players subscribe to.

Guitar players sometime use a device called a capo which is a bar placed across a guitar fingerboard. The capo changes the tone and pitch of the guitar.

On a pool cue the grip hand acts as a capo. Adding length to the butt has less impact on true balance point - point between the tip and grip hand - and tonal quality of the cue because you are only adding weight behind the grip hand. Adding length to the shaft changes the taper of the cue and true balance point and therefore the pitch/tone and playability of the cue.

Bottom line if you like the way the cue plays but for some reason want to add length add it to the butt. If you don't like the way the cue plays and for some reason want to add length add it to the cue in front of where you grip.
 
.Here is the correct answer which I normally reserve for my pay website which all the top players subscribe to...

Yes, yes, but is your website DA BOMB? Because if not, you know what would make it DA BOMB? I have a product just for you ... have you ever heard of ...
 
... not on the amount of squirt the shaft produces. See:

squirt bridge length effects


Bridge length does not affect squirt; but if you are aiming in a way that relies on a certain bridge length (e.g., BHE and/or FHE) and you change bridge length, then you are correct, the aim will be wrong. But it will also be wrong if you change anything else (speed, shot distance, cue elevation, conditions, etc.).

Regards,
Dave

Now I'm more confused then ever. This is in your description of pivot point..

"Effective pivots lengths. (compensating for the combined effects of squirt and swerve) for a wide range of shafts (for a given shot speed and distance) can be found in the shaft comparison table."

But now you are saying bridge length doesn't effect squirt? I have more homework to do.
 
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Don't matter..

I can't tell a difference. All my cues-shafts deflect. Some times it is like they are haunted. At times the damn cue ball just seems to get a mind of it's own and goes where it wants to. Happens way to often.
 
Don't matter..

I can't tell a difference. I have extensions, long ones short ones and shafts that are suposed to deflect less then others. Problem is my cue balls are haunted and some times that damn things just refuse to let me control them at times

They don't seem to care what my plans are and go where they want to go. Irritating for sure.
 
Now I'm more confused then ever. This is in your description of pivot point..

"Effective pivots lengths. (compensating for the combined effects of squirt and swerve) for a wide range of shafts (for a given shot speed and distance) can be found in the shaft comparison table."

But now you are saying bridge length doesn't effect squirt? I have more homework to do.
All the homework you need is at the links in my posts above.

Enjoy,
Dave
 
Now I'm more confused then ever. This is in your description of pivot point..

"Effective pivots lengths. (compensating for the combined effects of squirt and swerve) for a wide range of shafts (for a given shot speed and distance) can be found in the shaft comparison table."

But now you are saying bridge length doesn't effect squirt? I have more homework to do.
The "effective" pivot length and the "natural" pivot length are different things.

The "natural" pivot length is where you'd pivot the cue to compensate for squirt only - it's always the same place on the shaft.

The "effective" pivot length is where you'd pivot the cue to compensate for squirt and swerve - a different place on the shaft for each shot because swerve depends on speed, distance, cue elevation, etc.

pj
chgo
 
I don't think bridge length or using a normal mechanical bridge should affect squirt.
You don’t think that altering the pivot point will feel like a different amount of deflection when aiming?
Of course pivoting at a different length doesn't work if that's your method of adjusting your aim to compensate for squirt (backhand english).

But I was talking about whether bridge length could directly affect the amount of squirt generated - no matter how you compensate for it.

pj
chgo
 
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