CF Shaft Interior

[Sheldon]

If you could get away with NOT putting anything in the tubes, that would be ideal. Especially at the tip end, since deflection will be very low with only the carbon fiber there.
The problem you have is weight and sound. The tubes are too light, so weight must be added. But you do NOT want weight near the tip end, or deflection goes way up.
If nothing is in the tube, the sound they make is HORRIBLE, so compromises must be made. A very heavy filler at the back of the shaft and a very light filler at the tip is the ideal way to go. The Revo has light density foam throughout, and a weight is added about 8-10" from the joint end.

 

[garczar]

So I assume, no cue makers use Carbon Foam in CF shafts because it flexes? And Carbon Fibre doesn't.

bm

plenty of info out there about this. foam(no such thing as 'carbon fiber foam') is used to control sound, vibrations, weight. an empty cf shaft would be super light, buzzy and pingy.

 

[garczar]

If you could get away with NOT putting anything in the tubes, that would be ideal. Especially at the tip end, since deflection will be very low with only the carbon fiber there.
The problem you have is weight and sound. The tubes are too light, so weight must be added. But you do NOT want weight near the tip end, or deflection goes way up.
If nothing is in the tube, the sound they make is HORRIBLE, so compromises must be made. A very heavy filler at the back of the shaft and a very light filler at the tip is the ideal way to go. The Revo has light density foam throughout, and a weight is added about 8-10" from the joint end.

Cynergy's are empty at the tip end.

 

[Tom1234]

Cynergy's are empty at the tip end.

Garzar you are spot on again. My Cynergy made a god awful tink sound; my workaround was to change the ferrule to Tomahawk and that made the sound much better. This may not work for anyone else.

 

[Island Drive]

If you could get away with NOT putting anything in the tubes, that would be ideal. Especially at the tip end, since deflection will be very low with only the carbon fiber there.
The problem you have is weight and sound. The tubes are too light, so weight must be added. But you do NOT want weight near the tip end, or deflection goes way up.
If nothing is in the tube, the sound they make is HORRIBLE, so compromises must be made. A very heavy filler at the back of the shaft and a very light filler at the tip is the ideal way to go. The Revo has light density foam throughout, and a weight is added about 8-10" from the joint end.

Thx Sheldon, this is good stuff.
I do remember yrs ago hearing about the Predator wood shaft construction, taking flight with many others.

bm

 

[Island Drive]

Muskyed is talking about foam filled carbon fibre. It's not carbon foam, unless I'm totally misunderstanding him.
So again fill your CF tube with whatever density foam you think it's best, they come in 2, 4, 8, 16LBS and even denser.
As I said previously, maybe it's easier to buy pre filled tubes to start with?

Thx, this information allows the player to understand the tube fill material and action/reaction process.

 

[Island Drive]

Dude it sounds like you need to sit down and read book, at least come to the party with some of the information Use Google
Cf blanks come filled or hollow they are still carbon fiber blanks, regardless if they are filled or not. You need to ask these questions to the person you are purchasing from
And then you could probably cut 2 inches off and come up with something new and spectacular
Your bs is getting deep

This thread, and your help .... and others info in this thread, allows me to ask ''the right questions'' and understand this.
thx
bm

 

[muskyed]

Looking back, I think my wording was confusing on my first post as I didn't mean to imply the foam was carbon infused or whatever, but just foam inside some carbon layers. Sorry for my confusing writing, I should have looked again at what I wrote before sending.

 

[Island Drive]

Looking back, I think my wording was confusing on my first post as I didn't mean to imply the foam was carbon infused or whatever, but just foam inside some carbon layers. Sorry for my confusing writing, I should have looked again at what I wrote before sending.

Inside some ''carbon layers'' I'm not visualizing this Muskellunge.

 

[R2PQZ]

Inside some ''carbon layers'' I'm not visualizing this Muskellunge.

I may be wrong, but I believe carbon fiber sheet is wrapped around a mandrel. After enough sheets are added a coating is applied to the surface. I found a shop that would machine the mandrel to my specs. This is the biggest expense. First blank is included in mandrel cost. Following blanks are very inexpensive.

 

[garczar]

I may be wrong, but I believe carbon fiber sheet is wrapped around a mandrel. After enough sheets are added a coating is applied to the surface. I found a shop that would machine the mandrel to my specs. This is the biggest expense. First blank is included in mandrel cost. Following blanks are very inexpensive.

Most makers are going to filament-wound. The TOW(cf yarn basically) is coated with adhesive then spun onto the mandrel. A computer controls how its laid down, that's how they can vary the size/stiffness,etc. This method is supposed to be more precise with less voids. I've hit both types and can't tell them apart.