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#100021 - 08/08/09 04:03 PM Re: axis rotation & axis tilt ***** [Re: spr3wr]
cgeorg Offline


Registered: 10/12/07
Posts: 3567
A/S/L: Pittsburgh, Pa
Axis rotation != Axis of rotation.

Axis of rotation is the line around with the ball spins. It includes the PAP and NAP.

At the foul line, looking down from above, axis rotation is the angle difference between the the foul line and the axis of rotation.

At the foul line, looking from behind, axis tilt is the angle difference between the foul line and the axis of rotation.

So, axis tilt measures the difference between the axis of rotation and the ground - how much the PAP points to the air. Axis rotation measures the difference between the axis of rotation and the direction it's traveling - how much the PAP points back towards the bowler.

Note that all 3 of those values will change as the ball travels down the lane. The axis of rotation changes as the ball flares, and axis tilt and axis rotation change as the ball encounters friction - when the ball is rolling, both are 0.
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Legend

Registered: Fri Aug 27 2004
Posts: 10100
A/S/L: Mountain View, CA
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#100112 - 08/10/09 04:56 AM Re: axis rotation & axis tilt [Re: cgeorg]
wadud Offline
League Bowler

Registered: 10/18/08
Posts: 55
A/S/L: 30/m/malaysia
i think the better way to explain about this things with using a graphic method
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#100123 - 08/10/09 09:39 AM Re: axis rotation & axis tilt [Re: wadud]
sk8shorty01 Offline
Virtual League Champion x2

Registered: 01/05/09
Posts: 5163
A/S/L: 30/M/Merritt Island, FL
Originally Posted By: wadud
i think the better way to explain about this things with using a graphic method


Care to share your ideas on how to explain it? Maybe it will be something that will make more people understand.
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#101654 - 08/30/09 08:24 AM Re: axis rotation & axis tilt [Re: sk8shorty01]
wadud Offline
League Bowler

Registered: 10/18/08
Posts: 55
A/S/L: 30/m/malaysia
high axis tilt can be looking at spinner style of bowling. the ball will spin fast but less hook (skid only). for big hook (cranker), the axis tilt will be low because the ball not spin fast but rotation. for spinner, axis tilt is high

axis rotation for spinner is to low and for big hook is high if not mistaken
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#101657 - 08/30/09 08:55 AM Re: axis rotation & axis tilt [Re: wadud]
spr3wr Offline
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Registered: 08/19/06
Posts: 557
A/S/L: 54/m/MICHIGAN
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#101676 - 08/30/09 03:32 PM Re: axis rotation & axis tilt [Re: spr3wr]
wadud Offline
League Bowler

Registered: 10/18/08
Posts: 55
A/S/L: 30/m/malaysia
thanks
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#108257 - 11/21/09 07:53 AM Re: axis rotation & axis tilt [Re: wadud]
Zeph Offline
League Bowler

Registered: 04/18/09
Posts: 67
A/S/L: 23, male, Norway
To continue on the analogy of Coach, I suggest using the images at Ron C's article on releases: http://www.bowl4fun.com/ron/tip35.htm


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#109669 - 12/10/09 03:20 PM Re: axis rotation & axis tilt [Re: Zeph]
wadud Offline
League Bowler

Registered: 10/18/08
Posts: 55
A/S/L: 30/m/malaysia
thanks
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#142674 - 12/30/10 10:04 AM Re: axis rotation & axis tilt [Re: maf_south]
Bowling Boy Offline
Bumper Bowler

Registered: 12/30/10
Posts: 3
A/S/L: 49 M Plano, TX
I'm a Right Handed Bowler, I Rotate my Axis approximately 45. My Axis Tilt is low, maybe 5 up towards the ceiling.

What would adding more Tilt do to my throw?
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#143554 - 01/09/11 02:47 PM Re: axis rotation & axis tilt [Re: maf_south]
Bowling Boy Offline
Bumper Bowler

Registered: 12/30/10
Posts: 3
A/S/L: 49 M Plano, TX
So, as the Axis Tilt is Increased from 0 towards 90, the Ball will Carry down the lane Further, but it will Break Less in the Backend.

Increasing Axis Tilt is difficult, and just not worth it. imho

Your better off changing Balls if you need to get down the Lane Further.
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