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二手 cue 買賣

1/2 Cue

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MT
上校級會員

Hong Kong

Posts 3326

Posted - 11.02.2003 : 19:37:56

請問1/2cue有里特別要留意的地方?

有無話某一隻brand的 1/2 特別好?

Thanks

GUEST
初哥級

Posts 0

Posted - 13.02.2003 : 15:31:01

It all personal preference.
But I might pay attention to the balance point. You know, balance the cue on your finger and measure the distance from the butt end to where your finger is. The average balance point is probably between 16" and 17". Two piece cues tend to be balanced well forward, sometime more than 19", due to the fact that there is a metal weight (the joint) halfway up the shaft.
Like everything else about cues, there is no right or wrong. You may prefer the feel of weight in you hand and like a butt heavy cue, or your may prefer to feel more weight on your bridge and like forward weighted cues. Either way, it's not just the weight that makes the difference.

Also, want to mention about weight. Heavy cue Vs Light cue. Having a heavy cue can give the cue a 'more powerful' feel. The fact is, that you don't need to swing a heavy cue as fast to play a power shot because the weight helps the momentum. Power=mass x velocity. This is a basic law of Physics. But power without control is useless and you may find it difficult to control those 'touch' shots in and around the pack with a heavy cue.

Again. it is all personal preference.

Man, I haven't been in this forum for a while. Nice to speak to you guys again.

GUEST
初哥級

Posts 0

Posted - 13.02.2003 : 16:53:34

HAWK, thank u for your sharing, it is excelent!

and may i ask if i have a one piece cue which is light, how can i make a suitable power short? i mean the speech , the distance of back swing and so on.

MT
上校級會員

Hong Kong

Posts 3326

Posted - 13.02.2003 : 17:29:13

Thank you Hawk.

It seems that less and less players nowadays use 1/2 cues.

GUEST
初哥級

Posts 0

Posted - 14.02.2003 : 01:42:41

To BigJasons,

Just put the theory in work: Power= Mass x Velocity.
To increase power, one either has to increase mass or velocity or both. Since the mass is already been setted (your personal cue) then the only way to do it, while you are on the table, is to increase velocity. That mean a longer back swing. But longer back swing will eventually reduce accuracy.

Power shots are very enjoyable to watch (if it can pocket the balls), but power shots has less control and it is useless to pot balls without control.

Again, choosing a cue is all personal preference. It all depend on the player's style of play.

GUEST
初哥級

Posts 0

Posted - 14.02.2003 : 12:12:17

TO HAWK147,

THANKS AGAIN, the word 'mass' means''集中, 大量''.
但係我都係唔係好明你所指ge 係乜喎! explain plz!

MT
上校級會員

Hong Kong

Posts 3326

Posted - 14.02.2003 : 13:22:43

In Physics, 'mass means the material.

When you are in a place with gravitational force, say on earth, mass X gravitational force = weight.

Therefore, if you are not familiar with the word 'mass', just take it as weight.

kit kit
上校級會員

USA

Posts 2309

Posted - 14.02.2003 : 13:56:30

Your guys seem having a mechanics lesson here

(>'''<)
( ' ; ' ) 傑傑~~Twins(Gill and Sa)
(@)(@) 吾係流學生，身兼桌球網駐美大使

GUEST
初哥級

Posts 0

Posted - 14.02.2003 : 16:20:15

THANK u MT,
i get the point now.

Shadow
初哥級

Posts 18

Posted - 07.08.2003 : 17:11:42

Um..
Power =/= mass x velocity
Power = Energy / Time
Momentum = mass x velocity..
anyway, i think the the "power" u mean is momentum then..

kml4379
少校級會員

Hong Kong

Posts 957

Posted - 07.08.2003 : 18:42:59

mass 唔係代表重量咩?
牛頓第一定律 F=MA, 好明確咁講mass 係指物件o既重量喎.........

KML

kml4379
少校級會員

Hong Kong

Posts 957

Posted - 07.08.2003 : 19:01:07

根據一般o既理論,同埋講緊snooker,
以上所講緊o既power 應該係講緊momentum.

conservation of momentum:(可能串錯都唔定)
m1 u1 + m2 u2 = m1 v1 + m2 v2
m1 代表白波(我地用Q打中o個隻啦), m2 代表被擊中球
u1 代表白波碰撞前o既速度, u2 代表被擊中球碰撞前o既速度,通常都係0
v1 代表白波碰撞後o既速度, v2 代表被擊中球碰撞後o既速度

如果大家冇落任何西o既情況之下,係應該會有條咁o既formula.
如果用埋中波o既角度去計算,就會複雜o的,但係大致上都會用到上面o既原理

至於講到cuepower, 之前講過F=MA, 如果用枝14oz o既 Q, 同用枝16oz o既 Q,
o係用同樣o既加速率o既情況下,後者o既力量係會明顯比較強.所以Jimmy White 打波o既power 好強,亦都係因為佢支 Q 比較上重得多 (好似係二十幾oz)

KML

kml4379
少校級會員

Hong Kong

Posts 957

Posted - 07.08.2003 : 19:09:30

至於點解通常枕手較後o既人o既power 都可以咁勁.
係因為佢地改變o左o既係A (加速率)
大家可以諗o下點解會咁...
我覺得太後係可能會打唔中個波,所以都係適合就可以,唔駛咁刻意去改

歡迎大家交換意見

KML

Shadow
初哥級

Posts 18

Posted - 07.08.2003 : 19:43:22

also impulse = Force x Time = Mass x acceleration x time
原理上同gun shooting一樣, 長時間的acceleration, can bring out higher impulse, 即係力水勁D...但係同踢波一樣難, 事關支cue同白波要掂耐D...
唔知到..follow through的動作可否bring out longer time of contact呢?
講番出cue, F=ma 的問題, let mass be fixed, that means with all same mass cues, acceleration is important for higher force output, 但係如過一開始就發力, acceleration唔大得去邊, 反而由慢到快咁出cue, will the acceleration be relatively higher?
我係學生哥, 有錯請改.

Shadow
初哥級

Posts 18

Posted - 07.08.2003 : 19:48:00

[updated:LAST EDITED ON Aug-07-03 AT 07:48 PM (GMT)]>mass 唔係代表重量咩?
>牛頓第一定律 F=MA, 好明確咁講mass 係指物件o既重量喎.........
>
>KML
KML兄, mass係唔等於重量ka,
mass係質量, W=mg, g is gravitational acceleration, W is weight..
Since on Earth, g = 9.8m(s to the power -2) app. around the world, the relative weight of all matters are equal to the relative mass of objects, thus nowadays we often say weight = xxkg, but actually, weight = xxN..

MT
上校級會員

Hong Kong

Posts 3326

Posted - 07.08.2003 : 21:12:53

sorry to break in...

f=ma is Newton's second law (not the first)

the first law is law of inertia
second law is f=ma
third law is action and reaction

I hope I remember these right....

MT

棄保潛逃

kml4379
少校級會員

Hong Kong

Posts 957

Posted - 07.08.2003 : 23:16:22

係喎, W= mg 都唔記得o左tim.......
證明我o既phy 知識俾返晒學校.......
好彩我都仲知道係動力學o既問題.....哈哈,唔係就死啦
MT 兄, 我都唔知呀,問o下o的理科o既中學生就最好啦
不過我地就越講越遠啦........明明講緊 1/2 o既 Q
我以前用開 1/2 o既 Q, 其實好唔好力就唔識啦,但o個陣個feel唔錯
最重要都係方便帶同埋平......

KML

Handy
中校級會員