Does the type of ferrule magnify deflection? I was wondering if !vory ferrules have more or less deflection than other ferrules of the same length considering that the shaft is the same length and weight. Thanks
deflection
- Thread starter BigAlTheTiger
- Start date
The only thing that matters is the ferrule's weight - I don't know how much it contributes to the "end mass" that causes deflection, but it's in the perfect position (at the tip) to maximize its effect.
pj
chgo
So snooker cues have always been low deflect.?
The brass ferrules are short and have relatively thin walls. It helps that snooker cues are about 10mm at the tip. Some snooker players are changing to titanium ferrules, and titanium is about half the density of brass.
Isn't brass real light?
Yes, the ferrule density directly affects the deflection. Probably more than any other single factor. An independent claim on Predator's original patent was to specify the mechanical properties of the ferrule material. This was a separate claim from the hollow portion.
Ivory is about the worst ferrule for deflection purposes.
Ivory is about the worst ferrule for deflection purposes.
I've replaced 314-1 ferrules 20 years ago for a couple customers. I believe I used Ivorine 3 and/or Aegis 2. I copied the broken original ferrule exactly in its dimensions. When finished, the cue had quite a bit more deflection than before.
Density of:
Brass 8.4 to 8.73 g/cm³
Titanium 4.5 g/cm³
Ivory 1.7 to 2.0 g/cm³
Paper micarta 1.34 to 1.5 g/cm³
Brass is stronger so use less?
yes they are short ferrules, but they're actually not that thin. titanium is in theory a better option.
Can you glue a tip to titanium?
Just a comment, but with the glues nowadays, I'd be surprised you couldn't
One grade of superglue or another.
yes. the titanium is hollow all the way though, with a wood pin/tenon in the middle, so the glue adheres to both titanium and wood
Having done a lot of snooker cue repairs it's not such a huge difference in reality as there's so little material used. A brass ferrule with a 7mm hole and a 9.5mm O.D in standard length is about 1.7g a 6al4v Ti ferrule with the same specs is about 1.3g, so a difference in 0.4g.
Not sure how much impact that has on the cue, but the snooker guys seems to love those Ti ferrules..
Are the ferrules the same shape?
Yes that's two identical ferrules in terms of I.D, O.D and length