can someone explain why you would get more spin with a low deflection shaft??

[iusedtoberich]

I'm saying this because I'm (or try to be) a logical person:

If I switch between 13 mm shafts session to session, like two shafts made for the same cue with the same precise taper but different deflection, do you really think I hit every draw and topspin shot or sidespin shot far from where I did the previous 10,000 strokes?

Dr. Dave has researched and Bob Jewett has commented upon the efficacy of different tip/shaft combinations. The physics makes sense without the necessity for chalk marks or a pool robot.

I don't know where you get your info. Dr Dave just posted in this thread today the relevant links, that we've all seen on his site for years on this topic. From the horses mouth, he says different shafts do not produce different spin (his short answer), and his long answer, is their might be a 2 or 3% max spin difference produced between different shafts. Probably not any amount difference to lose sleep over.

 

[BC21]

In fact, a longer contact time is expected to reduce the maximum amount of spin you can get on the ball. See Dr. Dave's site for details.

Well, so much for me trying to use logic! LOL I'm an engineering person and love physics, but it's not always logical I guess.

It just seems that if I had two different shafts, one high deflection (HD) and one low (LD), both having the same taper and thickness/diameter, both equipped with identical tips (same thickness, circumference, and hardness), and I could repeat with robot precision the exact shot with each shaft, the LD would remain truer to the stroke line, allowing more force to transfer to the CB through a more solid contact. The LD shaft would lose some force due to it's greater deflection..

More force at the contact point on CB seems like it would create more spin. I realize we're dealing with microseconds and the extra amount of spin would be very trivial. With all that said, I suppose I'm going to study up on Dr. Dave's site to learn a little something.

 

[3kushn]

To all the people experiencing different amounts of spin with different shafts, do a chalk test with a Rempe or similar training ball.

Then, report back.

Without that chalk mark, you really don't have a leg to stand on.

Why can't measured results be observed? Stroke a CB perpendicular into a rail and measure the return spread.

 

[BC21]

Why can't measured results be observed? Stroke a CB perpendicular into a rail and measure the return spread.

Exactly. Nothing like immediate results!

 

[FranCrimi]

Exactly. Nothing like immediate results!

The human aspect is too much of a variable. We're not capable of shooting the exact same way every time. You would need a robot, but then that would defeat the purpose.

 

[BC21]

The human aspect is too much of a variable. We're not capable of shooting the exact same way every time. You would need a robot, but then that would defeat the purpose.

Maybe have to shoot the same shot about 20 times or more, get an average of how much action you get, then change shafts and do it again.

 

[skipbales]

in another thread
billiardsabout said this
"Some players have trouble with the low deflection shafts as they get more spin on the ball than they plan to. It's worth softening a bit and getting used to the "better" low deflection shafts IMHO."
i always thought spin was caused by tip placement
i dont understand why the type of shaft would matter
your help needed
thanks

If you think something has a certain effect, it will. I have a friend who talks about all the crazy spin he gets with a low deflection shaft and a crowd of reinforcement players appear to add their testimony. The more players there are and the longer they talk the more spin they create. That is why they call it "spinning a good yarn". :smile:

 

[BilliardsAbout]

I don't know where you get your info. Dr Dave just posted in this thread today the relevant links, that we've all seen on his site for years on this topic. From the horses mouth, he says different shafts do not produce different spin (his short answer), and his long answer, is their might be a 2 or 3% max spin difference produced between different shafts. Probably not any amount difference to lose sleep over.

I didn't say different shafts. I affirmed elsewhere here and on other threads that it is a tip/shaft combination, as has been posted here and elsewhere multiple times in the past two weeks.

My point stands. Many players have switched near-identical shafts for the same session to get this different tip/shaft combination.

 

[3kushn]

The human aspect is too much of a variable. We're not capable of shooting the exact same way every time. You would need a robot, but then that would defeat the purpose.

Ok but the Human aspect is what we have to work with as an individual. A robot would maybe define things but I know where I run into problems going out to the miscue area. Even though I know I can go further than most pool players, that doesn't mean a whole heck of a lot.

Wherever a player thinks is max offset, what are the results? Lets assume this tester is semi pro or better. If the contact point is the same, is there a difference. Yes I know that's the argument and why I went to the higher level player. Average 100 shots if need be.

Going across the short side I know my limit is a 2.75 diamond spread. I know I should get 3 diamonds. I'm just not that good. Never the less I know what kind of spin I'm applying which is off topic here, although important. IMO