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Author Topic: Heh...might have bitten more off than I can chew (pro-pin Paradigm)  (Read 1246 times)

JessN16

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I've owned a couple of pro-pin balls in the past and had good luck with them, so when I had the opportunity to buy a NIB pro-pin Paradigm pretty cheap, I took it.

Here's what came today -- the pin, RAD and CG are all in a straight line, and they measure like this: The pin is 6.5 inches above the RAD, and 11.5 inches (!) above the CG. If you were to think about this as a clock face, the pin is 12 o'clock, the CG is at 6 o'clock, and the RAD is the axis around which the hands turn.

Here's another visual: Turn the ball 90 degrees and then look at it from the side; the pin is about 9:30 and the CG is about 2:30, with the RAD about 12:30.

My preferred drill, due to where I track, is to drill the pin straight over the bridge about 1-2 inches up, with the CG dead center in the palm on a straight line down from the pin. On most assyms, the MB ends up somewhere southeast of the thumb hole.

On this ball, if I drill the pin over the bridge 1-2 inches, the thumb is going to come in right above the RAD, and the CG is going the be about 5 inches below that.

What I want to do with this ball is to have it not roll early, but also not to be uncontrolable at the breakpoint. I don't even know where to start with this layout, and I'm not even sure I can make this ball legal.

Anyone have any ideas?

Jess

 

JustinWi

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Re: Heh...might have bitten more off than I can chew (pro-pin Paradigm)
« Reply #1 on: June 21, 2006, 08:49:56 PM »
Find the spot opposite the pin and use it as your pin location, basically inverting the weightblock, you'll lower the rg and diff a tich by drilling out some of the flip block, but youll have the dynamics in the proper place.  Lay out using teh "fake" pin, cg, and RAD.  Be sure to weigh the ball first to make sure the CG is properly marked.

You'll end up with an approximately 1.5" pin out.

There are other ways to do it but that would be my best guess.
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JessN16

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Re: Heh...might have bitten more off than I can chew (pro-pin Paradigm)
« Reply #2 on: June 21, 2006, 10:04:05 PM »
quote:
Find the spot opposite the pin and use it as your pin location, basically inverting the weightblock, you'll lower the rg and diff a tich by drilling out some of the flip block, but youll have the dynamics in the proper place.  Lay out using teh "fake" pin, cg, and RAD.  Be sure to weigh the ball first to make sure the CG is properly marked.

You'll end up with an approximately 1.5" pin out.

There are other ways to do it but that would be my best guess.
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Ugh. Thanks for the tip. Problem is, the last thing I want is a pin distance that short. I hope I don't have to resort to that but I'll use it if I have to.

Jess

TWOHAND834

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Re: Heh...might have bitten more off than I can chew (pro-pin Paradigm)
« Reply #3 on: June 21, 2006, 10:41:08 PM »
Just out of curiousity, have you tried laying the ball out like normal and setting the ball on the scale?  If not, there are times where as a ball driller I have been surprised at the static weights on layouts, meaning there may have been a mis-marked cg.  I know this is extreme, but try it anyway.  Also...what is your total span length?  I have an idea but need to find out your span to see if it would work.
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JessN16

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Re: Heh...might have bitten more off than I can chew (pro-pin Paradigm)
« Reply #4 on: June 22, 2006, 12:35:25 AM »
quote:
Just out of curiousity, have you tried laying the ball out like normal and setting the ball on the scale?  If not, there are times where as a ball driller I have been surprised at the static weights on layouts, meaning there may have been a mis-marked cg.  I know this is extreme, but try it anyway.  Also...what is your total span length?  I have an idea but need to find out your span to see if it would work.
--------------------
Steven Vance
Former Pro Shop Operator

If anyone out there is worried about the scores being too high, try duckpin!!


Measuring from the cut of the finger holes to the cut of the thumb hole, I'm 4 5/8 on the middle and 4 3/4 on the ring. I'm not sure if that's exactly what you wanted me to give you by "span" but that should give you a ballpark idea.

I know what you mean about laying it out first and measuring -- I just had an overseas X-Factor Mission 35 that was an X-blem drilled. The ball was a blem because the CG and the RAD were basically on top of one another. We drilled it, held our breath while wondering if we were going to need a weight hole or not, but ended up being well within legal limits.

Jess

Traumabill

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Re: Heh...might have bitten more off than I can chew (pro-pin Paradigm)
« Reply #5 on: June 22, 2006, 10:40:43 AM »
As Steve suggested, weigh the ball.  In addition, if you have access to a Mo Pinel Determinator, spin the ball.  I know Storm spins their balls, but you may have a mismarked RAD.  Might make things easier once you know all the statics...


Bill
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