Its compression resistance value parallel to the grain is the cause
"More ebony equals stiffer, flatter feeling hit."
This hasn't necessarily been my experience.
At this point, it is time to declare that you and I should agree that we disagree. I would, however, be interested in seeing some objective data.
Dale
Ebony is denser and has a greater compression resistance value as say a maple for example.
As the wave of energy from the hit passes through the cue woods with lower compression resistance the fibers slightly compress, then spring back to original position as the wave dissipates and travels out of the cue. That is why maple has been the wood of choice for shafts and is found in the forearm since FOREVER!!!!! It helps the ball to POP off the cue better as if the shot was given more energy than you put into it. (Not to mention musical instruments)
When you use ebony it not going to compress nearly as well, not by a long shot. It just sits there solid, while the harmonic vibration/energy goes through it and comes right back out without being altered positively or bumped up by structure of the wood, in a way the wave form is sort of buffered by the ebony.
It makes the hit feel dead, like if you shot the shot with a steel rod it would just make a sound like "TONK" because it lacks the compression ability to have the harmonic qualities that are found in say ROSEWOOD that will give you that nice ring like "PINGGGGG"
Compression resistance equals vibration resistance which equals a stiff or rigid hit that is flat sounding and dead feeling.
You don't see solid one piece ebony butt cues not only b/c of a weight issue but b/c it would be difficult to attain a good hit.
Thats why the only musical instruments that they use ebony in are some of the wind instruments like the clarinet. I know that people have tried to make violins out of ebony and they sounded dead and could not hit the highs.
I know maple has a compression resistance parallel to the grain somewhere around 7800PSI but I could not find a figure on ebony tho I could swear its somewhere in the 12k PSI range but I could be off somewhat, but it most definitely is much higher than the value of maple. And the compression resistance parallel to the grain in the wood you use is part of the foundation behind the functioning mechanics of a cue stick, and its ability to drive/propel the CB .
-Grey Ghost-