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Author Topic: Robo-Rule Drilling  (Read 2617 times)

Sikxer

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Robo-Rule Drilling
« on: November 06, 2006, 09:57:28 PM »
Hi guys,

I recently picked up a 15lb robo-rule for our heavy sport shot since I've been having trouble getting much reaction lately.
The pattern is 43 feet on newer hpl syn. but there is major carrydown at times. I have an epic battle (pin under ring, cg swung at 45) that doesn't quite finish (gets into a roll to late). It does work well on the shorter patterns though.

I'm looking for some drilling suggestions on this one..
The balls specs are: ~1" pin, CG about 5/8" out of alignment between pin and mb mark, 2.04oz top wt. The ball is a 2nd

Any help would be appreciated..

Thanks, -Sikxer
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Rock77

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Re: Robo-Rule Drilling
« Reply #1 on: November 07, 2006, 06:07:28 AM »
I'm no expert, but my instincts say that you want to drill that ball to roll early. I'd be placing the pin under and to the right of your ring finger and place the mass bias on your VAL. If the ball doesn't finish enough then, I'd be altering the coverstock to make the ball duller.
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Sikxer

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Re: Robo-Rule Drilling
« Reply #2 on: November 07, 2006, 06:21:17 AM »
My only concern I guess is that the cg is to the right of the pin so I assume the pin would need to be near the center line to keep things legal and put the mb on the right side of the thumb..

On a side note.. I saw a couple of guys with short pin balls (one was a polished gp2) that had the pin further down, closer to the center of grip. What would that do? I assume it's early roll, but what about the reaction shape? The polished gp2 I saw actually had descent backend.
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Sikxer

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Re: Robo-Rule Drilling
« Reply #3 on: November 07, 2006, 10:06:29 AM »
Anyone?
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Rock77

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Re: Robo-Rule Drilling
« Reply #4 on: November 07, 2006, 10:23:17 AM »
quote:
My only concern I guess is that the cg is to the right of the pin so I assume the pin would need to be near the center line to keep things legal and put the mb on the right side of the thumb..

On a side note.. I saw a couple of guys with short pin balls (one was a polished gp2) that had the pin further down, closer to the center of grip. What would that do? I assume it's early roll, but what about the reaction shape? The polished gp2 I saw actually had descent backend.


Not sure what the pin near center grip would do.

As for the cg placement. If it is out too far, you could always put a weight hole to bring it back to legal.
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Mark T. Trgovac

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Re: Robo-Rule Drilling
« Reply #5 on: November 07, 2006, 01:42:26 PM »
The pin closer to center of the grip might be a variation of a rico drilling. I am not completly sure. Yet I would say first dont even try anyball with a oob finish on them for that shot. I would say already to take your robo after you drill it and take it to 600. The drilling I would put would be something really stong and continues movement. I dont know your PAP but if you take a look at my gp2 pic in my profile, that is a heavy oil drill. Still to this day cant find a shot to play it on.
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Mark T. "Scoot" Trgovac
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Sikxer

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Re: Robo-Rule Drilling
« Reply #6 on: November 07, 2006, 02:12:42 PM »
Mark, my pap is in my profile..
The drilling on your gp2 is kinda what I was thinking about with the pin low and mb swung out. Something like this: (where the * is the marked cg on the ball) It would likely need a small weight hole.

_O O
___.*

__O
_____mb
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Sikxer

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Re: Robo-Rule Drilling
« Reply #7 on: November 08, 2006, 06:00:09 AM »
ttt
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Sikxer

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Re: Robo-Rule Drilling
« Reply #8 on: November 08, 2006, 07:21:44 PM »
bump one more time.. I'm getting this drilled tomorrow so any help would be great.
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shelley

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Re: Robo-Rule Drilling
« Reply #9 on: November 09, 2006, 07:53:56 AM »
With only 2oz of TW, I don't think having the CG off to the right will hurt that much.  It's only a 1" pin and it's only 5/8" off the pin-MB line.  You can't really swing it far enough out in any direction to make statics unruly.

SH
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Sikxer

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Re: Robo-Rule Drilling
« Reply #10 on: November 09, 2006, 09:17:24 AM »
Thanks Shelly, that's what I figured..
It might look a little weird with the cg almost above the pin but it should work.
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