Cynergy shaft issues

ChopStick

ChopStick

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I recently bought a new Cuetec Cynergy 12.5 shaft. I have noticed a variance in shaft diameter at the tip end. It is supposed to have a 15.5 inch pro-taper. It starts out as 12.5mm at the tip. As I move down the shaft towards the joint the diameter dips down to 12.41 then up again to 12.5. I was wondering if anyone else had this issue. It feels weird. I am tempted to sand it all to match. I have may have waited too long to report it as a warranty issue.
 

Cuetec Warranty

Cuetec Warranty. The cue must be registered on our website within 60 days of purchase to activate the warranty. Limited lifetime warranty applies only to the original purchaser of the cue and is not transferable. The cue must be purchased through an authorized Cuetec dealer.
www.cuetec.com www.cuetec.com
 
Don’t pay attention to opinions or advice telling you to indulge, ingnore, tolerate, etc. any irregularity in your pool cue
that you find to be distracting if you can do something about it. Send the shaft back and ask them to repair or replace
the shaft since this is not something you caused to happen. Of course, call ahead since pre-authorized returns can
require special handling or include specific reference in your return shipping label. You have the evidence because you already measured the shaft. Do it once again and but take photos of the micrometer reading proving the variance in diameter. You can attach that to any email communication you have with Cuetec. Shaft diameter consistency should never be a problem with any CF shaft unlike wood shafts that can be physically and easily changed. Cuetec should replace the shaft.
 
Bavafongoul said:
Don’t pay attention to opinions or advice telling you to indulge, ingnore, tolerate, etc. any irregularity in your pool cue
that you find to be distracting if you can do something about it. Send the shaft back and ask them to repair or replace
the shaft since this is not something you caused to happen. Of course, call ahead since pre-authorized returns can
require special handling or include specific reference in your return shipping label. You have the evidence because you already measured the shaft. Do it once again and but take photos of the micrometer reading proving the variance in diameter. You can attach that to any email communication you have with Cuetec. Shaft diameter consistency should never be a problem with any CF shaft unlike wood shafts that can be physically and easily changed. Cuetec should replace the shaft.
Click to expand...
It's out of warranty. Consider yourself lucky if they answer the email
 
ChopStick said:
I recently bought a new Cuetec Cynergy 12.5 shaft. I have noticed a variance in shaft diameter at the tip end. It is supposed to have a 15.5 inch pro-taper. It starts out as 12.5mm at the tip. As I move down the shaft towards the joint the diameter dips down to 12.41 then up again to 12.5. I was wondering if anyone else had this issue. It feels weird. I am tempted to sand it all to match. I have may have waited too long to report it as a warranty issue.
Click to expand...
.09 difference isn't significant at all. It's the thickness of a hair or less. So each side of the shaft is around 1/2 a human hair less. It's absolutely insane to even think about something like that being a defect or effecting your shot in any way. Pool is 90% mental and this is definitely in the 90%.
 
boogieman said:
.09 difference isn't significant at all. It's the thickness of a hair or less. So each side of the shaft is around 1/2 a human hair less. It's absolutely insane to even think about something like that being a defect or effecting your shot in any way. Pool is 90% mental and this is definitely in the 90%.
Click to expand...
Yep. I cannot account for the feeling I get from it. It. could be decades of playing with shafts where the taper increases a few inches from the tip. It just feels like it gets smaller moving away from the tip even though measurement, as accurate as I can make it "feels" smaller than it is. The point where it feels smaller is 12.50mm. It is just weird. It just occurred to me that the thing may not be perfectly round.
 
boogieman said:
.09 difference isn't significant at all. It's the thickness of a hair or less. So each side of the shaft is around 1/2 a human hair less. It's absolutely insane to even think about something like that being a defect or effecting your shot in any way. Pool is 90% mental and this is definitely in the 90%.
Click to expand...
wait until they start to check their wooden shafts after the sand them all the time...

BTW. the measurements could be wrong....
 
ChopStick said:
Yep. I cannot account for the feeling I get from it. It. could be decades of playing with shafts where the taper increases a few inches from the tip. It just feels like it gets smaller moving away from the tip even though measurement, as accurate as I can make it "feels" smaller than it is. The point where it feels smaller is 12.50mm. It is just weird. It just occurred to me that the thing may not be perfectly round.
Click to expand...
I'm not saying your measurement isn't right, but when you're getting down to 90 microns it is in the territory where tool calibration and technique really start to get important. Squeeze a bit tighter or be a bit off perpendicular to the axis and it all throws in error. Good quality calipers are usually only accurate to 0.02mm, so this means your ferrule measurement could in reality be 12.48 and the small place may be 12.43, even if your technique was perfect. So you're into the range of 50 microns.

A micrometer would be more accurate, but again it takes a good technique to use. But the caliper is accurate enough to tell me that the measurement is not something that will cause an issue.

I highly doubt anyone is accurate enough by feel alone to tell a diameter is 90 microns smaller. I'm going to leave this topic alone for now but seriously this is well within normal tolerances for a pool cue shaft. I don't know what you're experiencing or think you're experiencing but this is beyond the pale to be this concerned with 0.09mm on a shaft.

Zero out your calipers and open them to display 0.09mm. It's minuscule. Now try 0.05mm, this could be the measurement figuring in the tool's resolution/accuracy. It's honestly nothing to be concerned with. Manufactured products all have tolerances. Unless it's literally aerospace or an industry where human life is on the line 0.09mm is a huge ask for any industry.
 
How a shaft plays has to do with spine, that is how and where the shaft flexes when hitting a ball. I suspect Cuetec tests the spine and might alter the shaft diameter a tiny bit to get flex where they want. Forget measuring the shaft diameter, just worry if it plays OK.. I believe carbon golf clubs are tested a lot, I heard hundreds of times.
 
j2pac said:
I'm thinking...dial indicator. 😉👍
Click to expand...
But then you need a lathe to spin the shaft. .09mm is .0035", that is the oil clearance between a connecting rod and crankshaft in an engine, you probably cant really feel the play there by hand. (at least with a film of oil you wont feel it, I never tried assembling one dry)
 
ChopStick said:
I recently bought a new Cuetec Cynergy 12.5 shaft. I have noticed a variance in shaft diameter at the tip end. It is supposed to have a 15.5 inch pro-taper. It starts out as 12.5mm at the tip. As I move down the shaft towards the joint the diameter dips down to 12.41 then up again to 12.5. I was wondering if anyone else had this issue. It feels weird. I am tempted to sand it all to match. I have may have waited too long to report it as a warranty issue.
Click to expand...
As someone who can also let almost immeasurable things get in their head, my recommendation if this is bothering you, is to go somewhere where they sell cues/shafts. Try a few shafts and find one you really like. Buy it and take it home.

Then under NO circumstance should you ever allow that shaft (or any other part of your cue) to be withing 10 feet of a scale, micrometer or caliper. Also, avoid laying the cue on a pool table, as that can sometimes lead to rolling it (either intentionally or accidentally) and you may see something you would have never otherwise known about.

Also, and this one is important. Never watch your cue guy put a new tip on it. You see things on a lathe that you cannot unsee!

I'm sure you can sell or trade your old shaft or maybe just keep it as a spare.

For many years I played with a Meucci "The Pro" shaft. It was 30" long and 12.5mm. I LOVED that shaft. I didn't wear a glove at the time and when it got sticky, I would often use one of those two-sided Tiger pads to "clean" it. One day I was having a new tip put on and he grabbed the 12.5 mm collet and when he slid it on the shaft about 3" from the ferule it actually rattled and wouldn't hold tight. :oops:
If that wasn't bad enough, he was using a Porper lathe where a fair amount of the joint end of the shaft sticks out of the head and it was bouncing so bad he had to ask me to loosely hold onto it to keep it from oscillating too much because of chatter on the other end. :cry:
I couldn't play with that shaft after that. I probably played some of the best pool of my life with that shaft right up until the day I had that new tip put on.
 
fastone371 said:
But then you need a lathe to spin the shaft. .09mm is .0035", that is the oil clearance between a connecting rod and crankshaft in an engine, you probably cant really feel the play there by hand. (at least with a film of oil you wont feel it, I never tried assembling one dry)
Click to expand...
If this is something that is truly bothering the OP, I would find a machinist, or a competent Cue-Maker to check the area in question for run-out/concentricity, diameter variance, etc...If everything checks out, the OP can at least be reassured that everything is round in Mudville.
 
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