保齡球問答(四) - 保齡球

以下文章有版權，未經同意請勿轉載。
感謝鄭爸爸翻譯，鄭行超先生給予資料



保齡球答問(四)

By Bill Monce




Q.
My ball keeps rolling over my thumbhole. I have a PAP of 4.75
and o and an axis rotation of 30 degrees and little tilt. I try
to drill stacked leverage and low pins, but the only one that
doesn’t track over the thumbhole is a longer pin, above the fingers.
Are there other drillings I might try or is there anything I can
do differently with weight holes to avoid the thumping.


Q.
我的球怎麼打都滾過姆指孔，我PAP的位置是向右4,75吋，上下0，
側旋角30度，軸傾角很小。我試過打pin 擺在較下方，3 3/8 x 3 3/8
的堆疊槓桿開法。但是只有把pin擺在兩指孔上方的高位，才可以使球
不滾過姆指孔。是不是還可以有其他的開法，或者利用鑽平衡孔來避免
球滾過姆指孔?


A.
It’s difficult to assess this problem without taking you out
on the lanes to see you bowl. With that said, I’m going to take
a chance and say that your thumb is exiting the ball late. The
thumb should exit the ball at the bottom of your down swing behind
your slide foot. Your thumb is most likely still in the ball beyond
the ankle, forcing you to turn the thumb down to release the ball.
Upon the thumb exiting, your hand is probably rotating clockwise
instead of counter-clockwise (Tip: Throw a football underhand to
someone to practice the proper release. The ball should rotate in
a tight spiral parallel to the ground). This is very similar to a
full roller release. Typically, this problem is caused by a stretched
span or too little reverse pitch in the thumb.

The first step is to have your grip evaluated by your proshop
operator. If the cut of the finger holes is more than halfway between
the first and second joint when the thumb is in the ball… completely
to the base, then the span is too long. If the span checks out, the
problem may lie in a lack of reverse pitch in the thumb. Both of these
problems cause the thumb to stay in the ball too long. Resulting in a
late release.

If the problem persists, I suggest using higher flaring layouts
with the pin above the fingers, and balance holes in the thumb positive
quadrant. This should get the track to flare off the thumb as quickly
as possible, giving the ball more time to react on the lane.


A.
沒有現場看你打球，實在很難找出你問題的所在，根據你的描述，我只能
說有可能是你的姆指太晚脫出球孔，姆指要在鐘擺的下方，手到達滑步腳以前
就脫出球孔，你的姆指很有可能是球過了腳腂還停留在球孔裡，迫使得你在釋
球時不得不把姆指往下轉，為了要讓姆指能脫離球孔，你的手或許是以順時鐘
而不是逆時鐘方向來旋轉 (修正法: 找位球友站在正前方，拿個橄欖球，將手
掌擺在球的正下方托住球，朝對方擲出，這樣可以練習較正確的釋球方式，丟
擲時使橄欖球像螺旋般轉動，球的行進方向也得和地面平行) 這種離手方式很
像full roller的打法。指距太長或姆指退分太少，都是造成這個問題的主要因
素。

先找位球具部的師傅檢查一下球孔，把姆指完全插至球孔底部，兩指緊貼
在球面上，如果指孔的邊緣超過了手指第一指節和第二指節的中間，那麼指距
就太長了! 如果指距沒有問題，則可能是姆指的退分不足，這兩種因素都會使
姆指卡在球孔內，造成太晚離手。

如果修正了上述二個缺失後問題還是存在，建議你採用高油線展開的鑽球
方式，把pin擺在兩指的上方，在姆指正象限的方位上鑽平衡孔，這樣可以使油
線最快滾離姆指孔，球在球道上也有較充裕的反應時間。

------------------------------------------------------------------------------

Q.
Can you give a brief rundown on how weight holes can affect ball
shape? Mine don’t seem to react any differently, regardless of where
I place them.


Q.
請概略說明平衡孔對球的運動方式會有什麼影響，我不管將它開在什麼位置
，好像球的反應都沒有太大的差別?



A.
There are four basic locations for balance hole placement.
Those are: Inside the vertical axis line (VAL), beyond the VAL,
thumb positive quadrant, finger positive quadrant. Each of
these locations has a different effect on ball motion.

A.
平衡孔擺設時可分為四個基本的方位，分別是: 縱向軸心線(VAL)以內，
縱向軸心線(VAL)以外，姆指的正象限方位，兩指的正象限方位。每個位置都
會給球帶來不一樣的反應。

Inside the vertical axis line (VAL)
縱向軸心線(VAL)以內


Placing a balance hole inside the VAL removes mass from the
top of the ball’s core. This shifts more mass toward the center
of the ball, lowering both the RG and differential of the ball.
The result is an earlier and smoother ball motion.

平衡孔擺在縱向軸心線(VAL)以內會抽離球心頂端的部份質量，間接造
成質量往球的中心集中，同時降低RG及RG差，結果會使球有較早及較平順的
反應。

Beyond the vertical axis line (VAL)
縱向軸心線(VAL)以外


Balance holes beyond the VAL. Shift mass away from the center
of the ball, raising the RG and differential. In theory this should
increase length, backend, and overall hook. In practice, it works a
little differently. This combination can be tricky. Higher RG cores
rev up later and higher differentials hook more. This can sometimes
create an over/under ball reaction.


平衡孔擺在縱向軸心線(VAL)以外會轉移球中心的部份質量，提升RG及RG差
，理論上來說，這樣會增大滑行，後段反應及總彎度。但實質上卻沒有明顯的
差別。這種組合的實用性則見仁見智，高RG的球心會較晚被帶起來，高的RG差
又會使球彎得較兇，再加上這種位置的平衡孔，有時會使球的反應不是太多就
是不夠，反而變得不好控制。


This balance hole placement is rarely used in today’s high
flaring equipment. Most performance bowling balls have flare
potentials in excess of 5 inches. Placing holes beyond the VAL
increases the likelihood of flaring over the balance hole and as
we all know, bowling balls do not hook in the air.


這種平衡孔很少用在目前高油線展開的球上面，大部份的高級球的油線
展開都超過5吋，把平衡孔擺在縱向軸心線(VAL)以外可能會使開展後的部份
球線壓過平衡孔，而且我們都知道: 保齡球在還沒有落地之前是不會彎的。

Thumb positive quadrant
姆指的正象限方位


The thumb positive quadrant is the most common placement for
balance holes in today’s high tech equipment. A balance hole
placed in this quadrant removes mass from the side of the core
closer to the thumbhole. Placing the thumbhole and balance hole
closer to each other effectively creates a larger void on that
side of the core, making it more asymmetric. This results in a
stronger response to lane friction. Thumb positive balance holes,
combined with pin up drillings, create a very sharp reaction downlane.


姆指的正象限方位對於今日這種高科技的球來說是最常見的平衡孔
擺設方式，這個位置的平衡孔會將球心的質量從側向往姆指的附近轉移
，這種將平衡孔放在較接近姆指孔的鑽法會拿掉較多球心側面的質量，
使球變得左右不對稱，也使球在咬住球道面時產生強烈的反應，姆指正
象限方位的平衡孔配合高pin的擺設，在球道上會創造出極為尖銳明顯的
球反應。


Finger positive quadrant
兩指的正象限方位


This balance hole placement is also referred to as a flare
reducing hole. Finger positive balance holes counteract the mass
removed from the ball when a thumbhole is drilled. This tends to
smooth out the ball’s transition and reduce track flare.


這種位置的平衡孔又稱為減小油線展開的平衡孔，兩指正象限方位的
平衡孔從球體所捨掉的質量會使球的行進路線變得較為平順，也會使抑制
油線的開展。


There are a few things to keep in mind when drilling balance
holes. A balance hole must remove mass from the core of the ball
to have an effect. Balance holes alter the shape of the core and
change its mass properties. The static weights of the ball have
very little to do with overall ball reaction, in comparison to
the amount of mass removed from the core and the location from
which it was removed.Balance holes can be pitched to remove mass
from a specific part of the core. Pitched holes give your proshop
operator the freedom to fine tune your ball to a very high degree
without the concern for flaring over the hole.Balance holes are a
tool to fine tune ball reaction. They may make a good layout great,
but they rarely if ever make a bad layout anything but worse.


鑽平衡孔時有幾個地方需要注意: 平衡孔從球心上所捨取的質量會影
響球在球道上的反應，相當於改變球心的形狀及質量，但如果單從它所捨
掉的質量相對於球的總重量所造成的影響則就微乎其微了。
平衡孔可以鑽在球心的特定部份來拿掉些許的質量，它使鑽球師得以
自由地微調球的反應，也不用担心會使球滾過平衡孔。
平衡孔是微調球反應的一項工具，運用得宜可以使球鑽得更棒，但是
亂鑽一通也會使球的價值被大大地減損。

-----------------------------------------------------------------------

--
你能告訴我...這遠方到底有什麼...

○　　　¯￣　﹉﹊ 我 祈 許 著 . . .
（(∕＼　　¯￣﹉﹎﹊　
■Π ﹌ 能 夠 找 到 解 答...

--