How low can deflection go and still be a useable shaft?

[Patrick Johnson]

I have Go-Custom 10mm snooker shaft I use for playing pool and it is definitely the lowest deflection shaft I have used and still moves the cues ball with ease.

Looks like an interesting cue, and likely very low deflection, but not zero...

GO SNK (Snooker Shaft) - Go Customs

GO SNK shaft is an improved last generation GO shaft made of composite material. GO SNK ( SNOOKER ) shaft has an CONICAL taper and have ZERO DEFLECTION. GO SNK shaft is also available with GO Customs cues. The perfect combination of foam, carbon type, carbon thickness and way of filling in the...

go-customs.com

pj
chgo

 

[JBell123!]

Since I first started this thread, I've had some time to think about theoretical shafts and squirt testing. It's too early to share some of the results, but here are a few of thoughts:

It'd be better to test squirt on bare slate to minimize swerve. So, anybody here about to cover a table and willing to experiment?

There's an easier way to test squirt than using the center of the table. Freeze the cue ball to a long rail and cue it so that the squirt goes away from the rail.

Densities in case you want to do some calculations:

carbon fiber 0.00155 g/mm^3
hard maple 0.000704812 g/mm^3
leather tips (laminated) 0.00106968 g/mm^3

If you're scientifically trained, feel free to cringe at how horribly I've abused significant digits....

The reason the Cuetec didn't do as well as the Revo in Dave Alciatore's video is probably due to ferrule construction. I haven't been able to find ferrule construction details for Jacoby, Meucci, or some of the other carbon fiber shafts and would be very interested in any information you might have.

I know what a meucci ferrule construction looks like.

 

[Black-Balled]

Manufactures use woven carbon fiber to make cues. This has a Young's modulus similar to aluminum

If, instead they used structural carbon fiber laid out in parallel fibers and alternating long wise and diametrically, Young's modulus of structural carbon fiber is 2.0×-to-2.5× stiffer than the woven stuff. So, in theory, you could make the shaft ½ the weight and it will retain all the stiffness.

This would do similarly to the deflection (DIV 2-2.5) and the weight (DIV 2-2.5)...

It would also cost over $3000 per shaft........ so only race cars, airplanes, space, and military gear can afford these kinds of costs.

I'm not familiar with the way cues are being made today, but I know a lot about damn bicycle frames.

While material can certainly vary, let's just say we're talking about the best carbon...

Frames are made with thought to the direction of the carbon in the layup and its impact/ resulting performance during use. Has this trickled into cue shafts? Are shafts unidirectional?

P.S.- you can get a pretty nice bike frame and fork for far less than a cue shaft. That is nutty.

 

[crazy8legs]

Since I first started this thread, I've had some time to think about theoretical shafts and squirt testing. It's too early to share some of the results, but here are a few of thoughts:

It'd be better to test squirt on bare slate to minimize swerve. So, anybody here about to cover a table and willing to experiment?

There's an easier way to test squirt than using the center of the table. Freeze the cue ball to a long rail and cue it so that the squirt goes away from the rail.

Densities in case you want to do some calculations:

carbon fiber 0.00155 g/mm^3
hard maple 0.000704812 g/mm^3
leather tips (laminated) 0.00106968 g/mm^3

If you're scientifically trained, feel free to cringe at how horribly I've abused significant digits....

The reason the Cuetec didn't do as well as the Revo in Dave Alciatore's video is probably due to ferrule construction. I haven't been able to find ferrule construction details for Jacoby, Meucci, or some of the other carbon fiber shafts and would be very interested in any information you might have.

This post on FB has a lot of detail: https://www.facebook.com/groups/OpenBilliardsMarketInfo/permalink/2309619812654393/


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