Joint choice v deflection...

[Bob 14:1]

Is there any empirical evidence that one's choice of joint either improves or degrades the performance of an LD shaft?

For example, I see the Predator SP's use a UniLoc joint.

 

[LAlouie]

Is there any empirical evidence that one's choice of joint either improves or degrades the performance of an LD shaft?

For example, I see the Predator SP's use a UniLoc joint.

There's no reason why it should. Might improve the quality of the cue as a whole. I mean, what the joint is doing is turning a two piece into a one piece. For instance, I feel a tight joint delivers a snappier hit,,,that's just me. However lots of great cue builders use an SS joint and their's don't lock in until the last few turns of the screw.

 

[MitchAlsup]

There is plenty of evidence that none of the low deflection properties of the shaft are altered by the choice of joint. All of the LD properties are in the 6" closest to the tip.

The joint can alter the balance point, overall weight, ability to suffer great stress, but the compression wave comming down the shaft from the impact of the CB does not get to the joint until way after the CB has left contact with the tip. So, the joint can alter the feel of the stick, but nothing of the dynamical properties of the tip impacting the CB.

 

[Bob 14:1]

A really precise and easily understood explanation. You'd get along well with my daughter. She's got a PhD. in statistics and sociology. Only difference is that I can understand you! Well done, sir! :wink:

There is plenty of evidence that none of the low deflection properties of the shaft are altered by the choice of joint. All of the LD properties are in the 6" closest to the tip.

The joint can alter the balance point, overall weight, ability to suffer great stress, but the compression wave comming down the shaft from the impact of the CB does not get to the joint until way after the CB has left contact with the tip. So, the joint can alter the feel of the stick, but nothing of the dynamical properties of the tip impacting the CB.

 

[JMW]

There is plenty of evidence that none of the low deflection properties of the shaft are altered by the choice of joint. All of the LD properties are in the 6" closest to the tip.

The joint can alter the balance point, overall weight, ability to suffer great stress, but the compression wave comming down the shaft from the impact of the CB does not get to the joint until way after the CB has left contact with the tip. So, the joint can alter the feel of the stick, but nothing of the dynamical properties of the tip impacting the CB.

I couldn't agree more. Nice post.

 

[seven_7days]

^ I typed the same thing verbatim and just as I was about to hit the reply button, I noticed yours.
Thanks for saving me the trouble. : D

 

[Bob 14:1]

Thanks for all your inputs, gentlemen. I believe we've reached a consensus of opinion. That's a rarity for sure on any forum!!! k:

 

[Tony_in_MD]

Well, that was an easier topic than let's say, an aiming system.
:wink:

Thanks for all your inputs, gentlemen. I believe we've reached a consensus of opinion. That's a rarity for sure on any forum!!! k:

 

[LAlouie]

^ I typed the same thing verbatim and just as I was about to hit the reply button, I noticed yours.
Thanks for saving me the trouble. : D

^^And yet you went through 3x the trouble of posting :wink::wink:^^

 

[thefonz]

hmmm interesting

Is there any empirical evidence that one's choice of joint either improves or degrades the performance of an LD shaft?

For example, I see the Predator SP's use a UniLoc joint.

empirical is a big word, if i were you, i'd as Mike Lambros. Out of all the cuemakers, i figure he'd be able to give you the best answer.

imho, i've found that some joints increase deflection quite noticably, while others just make me real thirsty and hungry. either way i don't play well.

thefonz<== never touches the stuff

 

[Bob 14:1]

empirical is a big word,

So is Ehhhh! I can't believe how gray he's turned.

 

[thefonz]

View attachment 229651

So is Ehhhh! I can't believe how gray he's turned.

Waiting for a happy days remake:smile:

 

[dr_dave]

Is there any empirical evidence that one's choice of joint either improves or degrades the performance of an LD shaft?

For example, I see the Predator SP's use a UniLoc joint.

Check out the articles and videos here:

shaft endmass resource page​

Only the last 5-8 inches of the shaft (closest to the tip) has an effect on squirt (AKA "cue ball deflection"). Therefore, the joint has no effect on an LD shaft's deflection; although, it can affect the "feel" and "hit."

Regards,
Dave

 

[SouthernDraw]

Low tip end mass!

"Keep your feet on the ground and keep reaching for the stars." ---Casey Kasem

 

[Bob 14:1]

Well done, Dave. Coincidentally, I started reading this exact data last evening. Great stuff!!! Thank you for taking the time to compile all this information.:thumbup2:

 

[dr_dave]

Check out the articles and videos here:

shaft endmass resource page​

Only the last 5-8 inches of the shaft (closest to the tip) has an effect on squirt (AKA "cue ball deflection"). Therefore, the joint has no effect on an LD shaft's deflection; although, it can affect the "feel" and "hit."

Well done, Dave. Coincidentally, I started reading this exact data last evening. Great stuff!!! Thank you for taking the time to compile all this information.:thumbup2:

You're welcome. I'm glad you are finding it useful.

Regards,
Dave

 

[scsuxci]

I think the low deflection is of course from the shaft but the joint goes hand in hand with a LD shaft when it comes to feel.I believe when Predator went with the Uniloc joint that the joint provided such a solid foundation that gave the best feedback for there shaft.