Author Topic: Drilling experts need reply (Read 1666 times)

chitown · « **on:** March 15, 2006, 02:06:32 PM »

This is for the drilling gurus. I have a Raw Hammer Doom which is a reactive pearl ball that is symmetrical. The ball is drilled stacked leverage with a balance hole on my mid line but about 1" past my pap. My pap is 5 3/8 over and 1/2" up. The balance hole is small and 1" deep. This brought the posative side weight to 1oz. My question is if I were to have the balance hole drilled 2" deep total and a little larger hole this would bring the side weight down to like 1/2oz or 1/4oz.

Which would make the ball stronger? A smaller less deep balance hole but 1oz of posative side weight or a little larger weight hole drilled deeper into the core but with less posative side weight?

The deeper balance hole would change the core shape more which would increase the diff(more hook). However by doing this there will be less side weight. Which way would produce more over all hook?

I would love to hear some of the more knowledgable bowlers answers to this question.

chitown · « **Reply #1 on:** March 15, 2006, 10:38:56 PM »

quote:
Static weights dont matter.

Sticking the xh down furthur will have more impact on the reaction, however the impact will be rather minimal, as you are mostly drilling into filler material where you are.

If you wanted the ball to 'hook' more, you would need to place an xh below your pap. The thinner the xh, the sharper the break, the thicker the xh, the more arcy it becomes.

This is just really basic information, if you want more detail, ill have to go into it more, and it will require time, something of which I don't have atm. Best of luck.

Thanks for the reply. I do have the balance hole below my pap but only about 1/2". I know it would have been better to place it 2" below the pap on my VAL.

I thought it would be better to drill the balance hole deeper than 1" regardless of the side weight loss. The 2" should get into the core even where the balance hole is.

BAPS_Eric · « **Reply #2 on:** March 15, 2006, 11:38:40 PM »

Remember that the larger the weight hole the quicker the ball will stand up, and the smaller the weight hole the longer more natural the roll will be. Most of my stuff have larger weight holes so the ball reads the mids quicker.

So long and skinny goes longer and short and fat the quicker the ball stands up.

Some people will not agree with this but it seems to be the case on every ball I have drilled. I actually started looking at how the weight hole positioned and the direction towards which bowties affected the reaction and here's what I found.

I drilled a weight hole going towards the bowtie on the bottom half of the ball and the reaction was smoother small or large weight holes both included. Then I drilled a weight hole opposite going towards the top bowtie and the ball was more snappier smaller weight hole went longer and turned hard and the larger weight hole was smoother of the breakpoint but still snappy.

Hope this helps....
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Bowling and women are one in the same....you never know what you gonna get from night to night.....

charlest · « **Reply #3 on:** March 16, 2006, 05:55:44 AM »

I am not an expert and you'd need one to verify this. I think you need larger (roughly 1" or more) and deeper (roughly 3") to affect the core size. When you drill into the side of the core and remove weight/mass from it, you're changing the shape and, thus, increasing the RG differential of the drilled core. This will increase the flare. That will often make a ball hook earlier and more, to a slight degree. It is not a major change, like a pin, a MB or a surface change would be. It is SLIGHT[/n], in the overall order of things!

KISS or don't sweat the small stuff.
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"None are so blind as those who will not see."
(That includes me too, at times! )

Author Topic: Drilling experts need reply (Read 1666 times)

chitown

Drilling experts need reply

chitown

Re: Drilling experts need reply

BAPS_Eric

Re: Drilling experts need reply

charlest

Re: Drilling experts need reply