How much deflection does your shaft have?

[mortuarymike-nv]

I thought it would be interesting to hear or know how much deflection your shaft has.

My solid maple shafts with the DIA of 12.50mm to 12.75 mm has 3/8 of a inch deflection at 9 ft of distance.
5/16 of a inch on a bar box or 7 footer.

My 11.75mm shaft has 5/16 deflection on a 9 footer and 1/4 inch on a bar box.

So how do you measure the deflection on your shaft ?

 

[longhair]

I thought it would be interesting to hear or know how much deflection your shaft has.



My solid maple shafts with the DIA of 12.50mm to 12.75 mm has 3/8 of a inch deflection at 9 ft of distance.

5/16 of a inch on a bar box or 7 footer.



My 11.75mm shaft has 5/16 deflection on a 9 footer and 1/4 inch on a bar box.



So how do you measure the deflection on your shaft ?

Maybe you should tell us how you are measuring so we can compare.


Sent from my iPhone using Tapatalk

 

[Pidge]

How hard are you hitting...

Mine has just the right amount

 

[victorl]

I find it more practical to measure deflection by the shaft's pivot point for back hand english. If the pivot point is shorter than my regular bridge length then there is too much deflection, and if it's longer there is too little.

 

[Allen Brown]

Well mine was ZERO.

 

[peteypooldude]

I thought it would be interesting to hear or know how much deflection your shaft has.

My solid maple shafts with the DIA of 12.50mm to 12.75 mm has 3/8 of a inch deflection at 9 ft of distance.
5/16 of a inch on a bar box or 7 footer.

My 11.75mm shaft has 5/16 deflection on a 9 footer and 1/4 inch on a bar box.

So how do you measure the deflection on your shaft ?

I'm not understanding how your measuring it. I use deflection to pocket balls and it's different depending on how close to center ball your cueing and the speed it's hit.

 

[tashworth19191]

Nobody can tell you how much deflection they have. Table conditions, humidity, cue ball type, speed that you hit the cue ball and how far you bridge are just a few factors. Without controlling all variables you can not determine the shaft deflection vs one of the other variables.

 

[Allen Brown]

Nobody can tell you how much deflection they have. Table conditions, humidity, cue ball type, speed that you hit the cue ball and how far you bridge are just a few factors. Without controlling all variables you can not determine the shaft deflection vs one of the other variables.

Answers....perfect table, dehumidifier, red circle cue ball, and a perfect stroke = ZERO DEFLECTION.

 

[dr_dave]

So how do you measure the deflection on your shaft ?

The easiest way to characterize a shaft is with a set of fast-speed back-hand-english (BHE) shots. For more info, and a demonstration, see:

how to measure a shaft's "natural pivot length"

And here's another technique that can be used to measure squirt (CB deflection) and compare shafts:

NV D.15 - Cue and Tip Testing for Cue Ball Deflection (Squirt)

Also, some published squirt data comaparing a large number of shafts can be found here:

published shaft squirt (CB deflection) data

Enjoy,
Dave

 

[Kim Bye]

Nobody can tell you how much deflection they have. Table conditions, humidity, cue ball type, speed that you hit the cue ball and how far you bridge are just a few factors. Without controlling all variables you can not determine the shaft deflection vs one of the other variables.

Well if you made a rig that took the human out of the equaition and defined parameters like bridge length, cue ball, cloth, stroke speed etc.
You could make some fairly good observations about cue deflection.
I have talked about this before and I think it`s doable, maybe cue shafts could be rated objectively like golf clubs etc.

 

[hang-the-9]

I thought it would be interesting to hear or know how much deflection your shaft has.

My solid maple shafts with the DIA of 12.50mm to 12.75 mm has 3/8 of a inch deflection at 9 ft of distance.
5/16 of a inch on a bar box or 7 footer.

My 11.75mm shaft has 5/16 deflection on a 9 footer and 1/4 inch on a bar box.

So how do you measure the deflection on your shaft ?

How did you measure the difference of 1/16th of an inch between the two? You'd have to have a robot shooting to be that consistant. I just don't see any human have that much of a consistent stroke to have the same amount of spin and the same speed of the shot to be that accurate.

Funny thing about deflection I found while trying some things, I changed where I hit on the cueball to the true center and I had a tough time making a ball with my original shaft even though I could spin it better now. I changed to a lower deflection shaft and was able to pocket balls better. Whatever adjustments I was making automatically to pocket the ball with spin did not carry over well when I changed where I lined up on the shot. Changed shafts and it was like I was shooting the old way with making the ball but I was able to get a lot more consistent spin.

 

[hang-the-9]

Well if you made a rig that took the human out of the equaition and defined parameters like bridge length, cue ball, cloth, stroke speed etc.
You could make some fairly good observations about cue deflection.
I have talked about this before and I think it`s doable, maybe cue shafts could be rated objectively like golf clubs etc.

There are a few pool shooting robots out there, including the simple "Iron Willie" that Meucci did. Some of the newer ones that universities worked on are pretty complex being able to move around the table and line up shots a lot better. Iron Willie was basically a pendelum you can set with a few parameters. I'm a bit suprized that the truth in advertising laws have not done much to standardize all the cue makers claims.

 

[Kim Bye]

There are a few pool shooting robots out there, including the simple "Iron Willie" that Meucci did. Some of the newer ones that universities worked on are pretty complex being able to move around the table and line up shots a lot better. Iron Willie was basically a pendelum you can set with a few parameters. I'm a bit suprized that the truth in advertising laws have not done much to standardize all the cue makers claims.

I think a pendulum type "robot" would be suffcient for testing. If you want to test with draw and follow, that will require a more sophisticated robot and thus, be much more costly.

 

[Cornerman]

There are a few pool shooting robots out there, including the simple "Iron Willie" that Meucci did. Some of the newer ones that universities worked on are pretty complex being able to move around the table and line up shots a lot better. Iron Willie was basically a pendelum you can set with a few parameters. I'm a bit suprized that the truth in advertising laws have not done much to standardize all the cue makers claims.

Iron Willie was from Clawson Cues; the Myth Destroyer was Bob Meucci's.

Freddie

 

[Allen Brown]

I think a pendulum type "robot" would be suffcient for testing. If you want to test with draw and follow, that will require a more sophisticated robot and thus, be much more costly.

Why? You cant use draw and follow with a pendulum stroke?

 

[peteypooldude]

I'm not sure about this but why couldn't we make a cue rest and strike the but of the cue at the same speed. I'm using the word strike loosely BTW. I could set this up and I would think several others could.

 

[peteypooldude]

I'm not sure about this but why couldn't we make a cue rest and strike the but of the cue at the same speed. I'm using the word strike loosely BTW. I could set this up and I would think several others could.

You could use a saw horse and shim it to height for the butt of the cue. For the shaft you could use a 2x4 with a bridge head mount to it. As far as getting the cue to speed a little creativity goes a long way. I wanted to elaborate a little more when I realized how poorly I explained myself

 

[itsfroze]

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[mortuarymike-nv]

Deflection

I don't know how everyone measures deflection.

My method of measuring deflection may not prove anything. I just thought that everyone needs to adjust for cue ball deflection and it would be nice to know how much adjustment we need to make.

So the question is how can I test my own cue shaft so I know how much deflection it has.

I place a object on the far rail one diamond away from the corner pocket.
At the other end of the table I place the CB 90% angle from the object ball and 6inches away from the rail.

The shot is to put massive English on the CB and cut the OB into the corner pocket.
<Full table 90% cut >

What I found is the cue ball at 2.5 speed is not going where I aimed and it was 5/16 of a inch to the side I applied the English to the CB.

So I adjust my aim 5/16 of a inch and I can make the shot 4 out 10 tries..
Its really a tough shot, but knowing how much I need to adjust my aim helps.

Now if I need to put massive English on a CB and the OB is 18 inches away I adjust my aim by 1/16 of a inch.

I know my method is primitive and I could snap a blue chalk line and set up a camera
slow motion video/

I just think there should be some way of really knowing how much deflection we need to adjust too.

 

[Kim Bye]

Why? You cant use draw and follow with a pendulum stroke?

Of course you can, but it would have to be a bit more complicated rig, in order to accurately do draw, stun and follow shots. You would need to have some sort of stop mechanism and the ability to angle the shaft up/down.
My thinking is that a hit close to center, would take eventual tip problems out of the equation.