core shape.. mass on top vs mass on bottom

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J_w73
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Posts: 915
Joined: January 19th, 2010, 12:53 am
THS Average: 210
Positive Axis Point: 4 3/4" over 1/4" up
Speed: 17 mph
Axis Tilt: 17
Axis Rotation: 45+
Heavy Oil Ball: Idol, Show-off
Medium Oil Ball: Venom Shock, Rhodman,
Light Oil Ball: Phobia, White Hot Badger
Location: Northern California

core shape.. mass on top vs mass on bottom

Post by J_w73 »

Trying to find some information about how a ball will roll and react differently if the mass of the core is closer to the pin vs on the opposite side. I had just run across something that talked about this, but I can not find the article. .
Right Handed, 16-17 mph off hand (14 -15 mph on Qubica reading) ,350 rpm,PAP 4 3/4 x 1/4 up, 17 deg axis tilt, varied rotational axis deg.. usually 45+
Book Average 210+
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EricHartwell
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Posts: 4080
Joined: April 5th, 2011, 12:24 am
Positive Axis Point: 4-3/4" and 1/2"up
Speed: 16 off hand
Rev Rate: 330
Axis Tilt: 12
Axis Rotation: 45
Heavy Oil Ball: Radical Tremendous, EVO solid, Hammer Obsession
Medium Oil Ball: EVO pearl, True Motion, Columbia Command, DV8 Intimidator
Light Oil Ball: Blue Hammer
Location: Michigan

Re: core shape.. mass on top vs mass on bottom

Post by EricHartwell »

J_w73 wrote:Trying to find some information about how a ball will roll and react differently if the mass of the core is closer to the pin vs on the opposite side. I had just run across something that talked about this, but I can not find the article. .
[youtube][/youtube]
Is this what you were looking for?
Eric Hartwell

Right Handed
PAP 4.75" up 1/2"
45* rotation
12* tilt
330 rev rate
16 mph off hand
J_w73
Member
Member
Posts: 915
Joined: January 19th, 2010, 12:53 am
THS Average: 210
Positive Axis Point: 4 3/4" over 1/4" up
Speed: 17 mph
Axis Tilt: 17
Axis Rotation: 45+
Heavy Oil Ball: Idol, Show-off
Medium Oil Ball: Venom Shock, Rhodman,
Light Oil Ball: Phobia, White Hot Badger
Location: Northern California

Re: core shape.. mass on top vs mass on bottom

Post by J_w73 »

I had not seen this before, but this does have the information I was looking for. What I saw before was just a couple of lines, I think from Mo, in one of the Wiki docs.

This was pretty good though. Thank you.
Right Handed, 16-17 mph off hand (14 -15 mph on Qubica reading) ,350 rpm,PAP 4 3/4 x 1/4 up, 17 deg axis tilt, varied rotational axis deg.. usually 45+
Book Average 210+
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