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Author Topic: Understanding Assym. Drilling Layout for Zone Classic RP  (Read 3082 times)

high_revs

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Understanding Assym. Drilling Layout for Zone Classic RP
« on: March 23, 2006, 06:52:16 AM »
I'm trying to understand & fairly new to drilling language. So, for a right-handed bowler, the MB (white,locator-pin), on assym. balls it is highly recommended that should be placed on the right side (positive?) side of thumb hole. Am i correct?

My ZCRP is layed out just like IL_BOWLER & track is clipping the thumb hole. If i redrilled with pin,cg,+mb on right positive side will that help in lowering track?? thanks.
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MegaMav

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Re: Understanding Assym. Drilling Layout for Zone Classic RP
« Reply #1 on: March 23, 2006, 03:41:45 PM »
quote:
yes the PSA should be kicked to the right of the thumb the farther right you kick it the more aggresive the ball flips


eeeeeh... not exactly, high revs this guide should help you...

Mass Bias Guide

Eric
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HamPster

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Re: Understanding Assym. Drilling Layout for Zone Classic RP
« Reply #2 on: March 23, 2006, 07:54:12 PM »
Actually, the further you kick the psa out, the earlier they hook, the flatter they are on the backend, and the more they suck . .  I haven't seen a new Zone yet that rolled halfway decent at all if the psa was kicked out any further than 2 inches, and that's even pushing it a little.
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Crankenstein300

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Re: Understanding Assym. Drilling Layout for Zone Classic RP
« Reply #3 on: March 24, 2006, 09:18:42 AM »
quote:
Actually, the further you kick the psa out, the earlier they hook, the flatter they are on the backend, and the more they suck . .  I haven't seen a new Zone yet that rolled halfway decent at all if the psa was kicked out any further than 2 inches, and that's even pushing it a little.


You haven't seen my Vapor Zone then. Mine has the PSA kicked out almost to the VAL and it has a sharp move at the breakpoint with plenty of hit. I'll get a picture of it and post it. Same with my friends Strike Zone with the PSA on his axis.

EDIT: OK, here's a pic of my Vapor Zone. It was a left behind ball of Mikas from the Medford PBA stop. I just glued a slug in the Switch Grip sleeve and plugged the fingers. Not sure if the surface was tweaked any, but it looks like the box finish to me. Hooks a lot, but still has hit.

http://www.soallstars.com/brian/vapor.jpg

Edited on 3/24/2006 1:26 PM
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Carolina Kingpin

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Re: Understanding Assym. Drilling Layout for Zone Classic RP
« Reply #4 on: March 24, 2006, 03:24:43 PM »
I second Crank's view on the Vapor Zone. Mine is drilled nearly identical to his (PSA near VAL) and it retains plenty of energy for the backend as long as it's not too dry in the fronts.

CK
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high_revs

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Re: Understanding Assym. Drilling Layout for Zone Classic RP
« Reply #5 on: March 24, 2006, 03:57:12 PM »
thanks all for the information.  i'm going to get my zcrp redrilled this weekend, with the PSA on the right-side this time.

Question for Crank...thanks for the vz pic, where is the cg on your vz? i can't tell where it is from the pic, is it stacked? under the pin or ??

cheers
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Crankenstein300

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Re: Understanding Assym. Drilling Layout for Zone Classic RP
« Reply #6 on: March 24, 2006, 04:21:55 PM »
The CG is right in line with the pin and PSA. I'd say its just about an inch above the white blob from the flash in the picture.
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high_revs

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Re: Understanding Assym. Drilling Layout for Zone Classic RP
« Reply #7 on: March 24, 2006, 04:30:58 PM »
ok, i see it, thanks
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MegaMav

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Re: Understanding Assym. Drilling Layout for Zone Classic RP
« Reply #8 on: March 24, 2006, 09:45:09 PM »
what is lost in this conversation is the fact that the mass bias is trumped by the pin position depending on its strength, the mass bias position in relation to PAP is what shapes the breakpoint, not the total reaction of the ball.

if the pin position is in a max leverage position, there is very little mass bias can do to alter the reaction, that is a big reason why you see "pro layouts" with a weaker pin position (neg of centerline) and a stronger mass bias position (45-75°) so the mass bias has a greater impact on shaping the ball path.

so looking at the layout on that vapor, it looks close to 1E on the brunswick sheet, which would put it close to 3&3/8" from PAP (Max Leverage).
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agroves

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Re: Understanding Assym. Drilling Layout for Zone Classic RP
« Reply #9 on: March 25, 2006, 08:22:22 AM »
High Revs, it really depends on what you want.  The layout you currently have will tame the Zone Classic alot.  I've seen that layout used for high rev rate guys and some seem to like it, even though it isn't recommended.

The PSA(we are in a brunswick forum) is a just a fine tuning tool.  I like the psa near or on the val, anything more than 4" from my axis has been a huge turd for me.  They are just too uncontrollable.

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302efi

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Re: Understanding Assym. Drilling Layout for Zone Classic RP
« Reply #10 on: March 26, 2006, 09:30:28 PM »
AAckley1 your info is way off !

Mass Bias near the thumb is not "least hook" !

Mass near VAL is not "most hook" !

See this is the kinda info that newbies read and then they get it all wrong from the start

Pin position determines flare ! ("Hook" if you will)

Mass Bias placement determines break point shape !

Most of this is over shadowed by coverstock prep !
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