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Author Topic: Layout for 1/2" pin  (Read 4289 times)

900DJ

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Layout for 1/2" pin
« on: January 13, 2012, 08:59:04 AM »
My uncle just received his 900 Global Train, but it only has a 1/2" pin wtf!  Can he drill this ball without killing its strength?  He needs all the strentgh this ball has.  i dont know his pap, but he has a medium track, around 15mph at the pins, low rev speed dominate stroker.

 

My driller said cg and pin in the palm was the only way, but that would kill its strength?
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badbeard

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Re: Layout for 1/2" pin
« Reply #1 on: January 13, 2012, 05:29:58 PM »
call global 900 ask for Dale he can help

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Impending Doom

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Re: Layout for 1/2" pin
« Reply #2 on: January 13, 2012, 05:31:25 PM »
What is the top weight of the ball?

*Inventor of the FIBJAM*

 
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900DJ

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Re: Layout for 1/2" pin
« Reply #3 on: January 13, 2012, 05:34:00 PM »

 sorry cant remember, would have to find out.



Impending Doom wrote on 1/13/2012 6:31 PM:What is the top weight of the ball?

*Inventor of the FIBJAM*


The sky is falling

The end is near

The final warning

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kidlost2000

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Re: Layout for 1/2" pin
« Reply #4 on: January 13, 2012, 06:50:31 PM »
It is fine you have several options for a pin down drilling. Depending on the top weight you can put the pin/cg out and add a weight hole if needed to help. The ball would be plenty strong. With him being a lower rev player and his ball speed it wouldn't be an issue at all. Probably put the pin around 4" from his pap and then check the static weights before drilling for weight hole locations if needed.

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JohnP

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Re: Layout for 1/2" pin
« Reply #5 on: January 14, 2012, 05:29:28 PM »
Another option for a pin-in ball is what's called the "PBA Plastic Ball Layout".  It's called that because it was designed primarily for balls with pancake cores, but Mo says it will work well with balls that have less than .039 total differential (I don't know what the differential of the Train is).  --  JohnP

 



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900DJ

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Re: Layout for 1/2" pin
« Reply #6 on: January 16, 2012, 06:00:40 PM »
Thanks guys, the top weight is 2.5
 



Impending Doom wrote on 1/13/2012 6:31 PM:What is the top weight of the ball?

*Inventor of the FIBJAM*


The sky is falling

The end is near

The final warning

The sun disappears. 

 

My arsenal

 

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FrontTwelv

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Re: Layout for 1/2" pin
« Reply #7 on: January 17, 2012, 01:54:28 PM »
The Train is a symmetrical ball so there will be no MB marking.  SImply draw a line from the pin through the CG and mark the MB 6 3/4 from the PIN on that line.  Choose a dual angle layout around (60-90 degrees) x (4.5-5.5) x 70 degreese.  The second angle will keep the pin down so you don't have to put a balance hole too far up your VAL.  

Keep the pin down

Keep the "mark-it-yourself" MB near the thumb and you should weigh out fine.

With the higher MB angle it will help push the ball down the lane, which will be good for him b/c his lower ball speed

The higher Pin angle will slow the ball down off the spot (less flippy) which once again will help him control it.

 The train is a big hooker, so a weaker drilling will help him use it more. 



Drew Jordan
Columbus, OH
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lbss831

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Re: Layout for 1/2" pin
« Reply #8 on: January 17, 2012, 02:23:11 PM »
 I wud do pin under ring finger with cg slightly kicked,  will read mids good with plenty of angle

Slim300


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900DJ

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Re: Layout for 1/2" pin
« Reply #9 on: January 17, 2012, 07:58:20 PM »
He got it drilled up today.  ended up 4-5" pin to pap cant exactly remember the angles.  pin under ring finger, with finger holes deeper no hole.  this ball works great for him.  gives him miss room right that he doesnt normally have.  Hits harder than anything i have seen him throw, 1 solid 10 pin all night!  makes me want one!  thanks for all the help!
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tdub36tjt

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Re: Layout for 1/2" pin
« Reply #10 on: January 20, 2012, 09:28:17 AM »
I know a lot of people that do this. Even if you use a 20* drilling angle the mb is still gonna end up near the thumb after a symmetrical ball is drilled. The only real way to bring the mass bias further out from the thumb is with a weight hole....So placement of the cg should really only be used to help you utilize a weight hole that will help strengthen or weaken the ball to get the desired reaction.
 
FrontTwelv wrote on 1/17/2012 2:54 PM:
The Train is a symmetrical ball so there will be no MB marking.  SImply draw a line from the pin through the CG and mark the MB 6 3/4 from the PIN on that line.  Choose a dual angle layout around (60-90 degrees) x (4.5-5.5) x 70 degreese.  The second angle will keep the pin down so you don't have to put a balance hole too far up your VAL.  

Keep the pin down

Keep the "mark-it-yourself" MB near the thumb and you should weigh out fine.

With the higher MB angle it will help push the ball down the lane, which will be good for him b/c his lower ball speed

The higher Pin angle will slow the ball down off the spot (less flippy) which once again will help him control it.

 The train is a big hooker, so a weaker drilling will help him use it more. 



Drew Jordan
Columbus, OH


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