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Author Topic: Would these be close?  (Read 1189 times)

bltbyj

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Would these be close?
« on: November 17, 2010, 06:21:25 AM »
Both balls are reactive solid and asymmetrical covers are 2000 AB.
I have the NIB old ball but I like (Don't have) the NIB new ball as well.

NIB old ball.          

Diff. 0.055            

RG    2.498                    


NIB New ball

Diff. 0.052

RG    2.520
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NoseofRI

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Re: Would these be close?
« Reply #1 on: November 17, 2010, 02:28:01 PM »
maybe
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bltbyj

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Re: Would these be close?
« Reply #2 on: November 17, 2010, 02:29:57 PM »
quote:
maybe


Lol! Thats it "maybe"?
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J_w73

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Re: Would these be close?
« Reply #3 on: November 17, 2010, 02:46:49 PM »
You aren''''t going to be able to tell much just from the RG numbers.
Both balls would flare about the same with a given pin position.
The cover strength of each ball and the degree of asymmetry of each core is going to have a lot to do with the reaction.
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18 mph,350 rpm,PAP 5 1/2 x 3/8up, 15 deg axis tilt, varied rotational axis deg.. usually 45+
HighGame 300 x 5, High Series 808
Book Average 220,PBA Xperience 185


Edited on 11/17/2010 4:11 PM

Edited on 11/17/2010 4:12 PM
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350 RPM, 17 MPH

bltbyj

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Re: Would these be close?
« Reply #4 on: November 17, 2010, 04:53:31 PM »
J_W,

Does the Itermediate Diff make a difference?

Old ball would be 0.028 and the new ball would be 0.015.
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kidlost2000

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Re: Would these be close?
« Reply #5 on: November 17, 2010, 04:53:39 PM »
Cover will be the biggest difference. Depending on how you drill each ball and the weigh hole location you could the RG and Diff to be even closer then they are currently. Once again, if you drilled both identical and both had the exact same cover, you may not notice any difference at all.
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…… you can't  add a physics term to a bowling term and expect it to mean something.

bltbyj

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Re: Would these be close?
« Reply #6 on: November 17, 2010, 05:03:33 PM »
kidlost2000,
Thanks. I was thinking of putting the pin above the bridge with the MB at 45*.
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J_w73

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Re: Would these be close?
« Reply #7 on: November 17, 2010, 05:04:29 PM »
quote:
J_W,

Does the Itermediate Diff make a difference?

Old ball would be 0.028 and the new ball would be 0.015.


Yes..  the .028 would be around 50% differential ratio(.028/.055) and the .015 would be 28% differential ratio.  The covers are going to have more to do with the reaction than anything. The chosen layout can effect this but if they were the same cover and the same layout the .028 should be more angular and transition quicker at the breakpoint/friction.  This could mean more hook or could mean faster roll out depending on the condition, speed, and release.
--------------------
18 mph,350 rpm,PAP 5 1/2 x 3/8up, 15 deg axis tilt, varied rotational axis deg.. usually 45+
HighGame 300 x 5, High Series 808
Book Average 220,PBA Xperience 185


Edited on 11/17/2010 6:06 PM
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350 RPM, 17 MPH
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