Author Topic: 315 degree drilling (Read 7494 times)

louie · « **on:** October 25, 2004, 02:51:40 PM »

This drilling intrigued me. I picked up a Phenom unleashed and had it drilled up with the pin next to ring finger and the mass bias way up high on my VAL. There is a weight hole on the cg to keep the statics legal. I've thrown the ball on two different lane conditions. Both house shots during open play. I can't get the dang thing to hook or hit! It's hooking much less than my Blue Sparkle Gryphon and it isn't hitting either. I thought it might be burning up so I polished it. Even worse. Lots of length with no backend. I still have to roll it on a fresh pattern, but the initial results are discouraging. I expected this to be a control drilling, but I didn't expect it to turn the Phenom Unleashed into a dry lane ball. Is this typical for this drill pattern.
Thanx!
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Why does everyone laugh when I bowl?

louie

Jesse James · « **Reply #16 on:** October 29, 2004, 04:53:46 PM »

I have this drilling on a Bull Whip pearl. A 14#er which worked great on a fresh shot and a shot with carrydown. But whenever the track burnt up, it turned into a skid-flip nightmare! So I put the 315 degree drill on it. Gave me extra length, and a lot more control. Still is a good ball. I think the problem with the Phenom, is that your core is asymmetrical. So your driller would really have to be very aware of where your flip blocks are located in the ball before he drilled. It's a lot easier to make mistakes with these new asymmetrical core balls, than with symmetrical. If you go thru and look at a lot of reviews with, say the Morpheous core balls...they either love it, or hate it!! They say it's the bomb.....or it doesn't do squat.
Me thinks that with these type balls, there are only a few ways to drill them and have them be effective. But...jut my two cents.

stanski · « **Reply #17 on:** October 29, 2004, 05:32:09 PM »

AGAIN IT IS POINTLESS TO DRILL A SYMMETRIC BALL 315!!! Listen, i'll try to explain this so maybe somebody on here understands this.

Alright, take a football, stick it on its tip on the ground with the seams facing you. Imagine that this is the core of a bowling ball. Ok, now imagine that the fingerholes are just below the tip of the football, and the thumbhole is a little ways down from this. The Tip of the football is the pin, some point on the seams is the cg. this would be a stacked drilling with the pin above the bridge.

Now, turn the football so that the seams face away from you. This would put the cg at about a 270 degree drilling. Does the core look or its relation to any part of the ball look any different whatsoever? NO IT DOESN'T! It is called symmetric for a reason, because if you put the cg anywhere on the ball, the core will not move a whole lot. The mass bias is so small that it makes very little difference where you put the non-marked mass bias on a symmetric ball.

Does this make sense to everyone on here? I don't know any better way to explain this, but symmetric balls are not affected a whole lot by cg placement, which is actually non-marked mb placement. So the 315 is a fallacy for symmetric balls, and hit or miss with mass bias balls! Please tell me if there is any way to explain this, but i really don't know how to say it any better than there is no purpose for drilling a symmetric ball 315!
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stanski

stanski · « **Reply #18 on:** October 29, 2004, 05:33:20 PM »

quote:
quote:
I wish people would really stop saying you need a short pin with a pre marked mass bias for it to be effective. That is not true at all. I've tried a 315 drill in 4 different balls all with different pin distances and got great results. As long as the static weights are legal it doesn't matter what kind of ball you're using. I've tried it in a Stinger 2 Piece with a 2-3 pin and loved it, another Stinger 2 piece with a 1" pin, a Track Mojo with a 2" pin and a Rage with a 1-2 inch pin.

One warning though, this drill is not for high trackers. I would drill this for anyone with a PAP of more than 5 1/4, especially if they were rev challenged.
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-DP3

I was wondering if you could do it on a ball with a longer pin.
So the only thing that the short pin does is make it easier to get the weights
down???
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Eric T. Spivey, P.E.
Visionary Test Staff Member
http://www.visionarybowling.com

Yes, for any drill pattern, the pin out distance does not matter except for making a ball legal.
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stanski

livespive · « **Reply #19 on:** October 30, 2004, 09:24:01 AM »

Thanks stanski

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Eric T. Spivey, P.E.
Visionary Test Staff Member
http://www.visionarybowling.com

stanski · « **Reply #20 on:** October 30, 2004, 09:43:20 PM »

yes no problem livespive, i hope my words have helped some people to better understand the 315, a very strange drilling in assymetrics and a myth in symmetrics. Actually livespive, you were the one that clued me into the 315 with your charcoal executioners about a year ago, and since then, i have had 2 assymetrics drilled 315, both with pin 4 inches from pap, one was a freak out, the other was a time zone. Time zone was eventually sold to a friend who absolutely loved the reaction of the ball (for almost a profit i might add), and freak out i still keep around for lighter funky patterns. I talked to my driller (Bill Tucker of Sunnybrook lanes in michigan) about the drilling and he is the one who explained most of what i now know about it. It was a little easier when he was explaining stuff, since he has weight blocks on hand to show things with.
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stanski

livespive · « **Reply #21 on:** October 31, 2004, 05:06:35 PM »

Yeah,

I remember talking to you about that.
From everything that I knew about it
it was used on a 0-1" pin, now that I
know it can be used on something else,
I don't have to sell my other executioners
to get 1" equipment.
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Eric T. Spivey, P.E.
Visionary Test Staff Member
http://www.visionarybowling.com

ambi1 · « **Reply #22 on:** November 04, 2004, 09:45:33 PM »

guys correct me if I'm wrong, but I seem to remember one of our more venerable bowlers posting on this ( I think it was Bob Hanson) and his comment was (to the best of my recollection.) this drilling takes away the head conditions, and it is still sensitive to release changes (people were claiming that it didn't matter too much how you released the ball).
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DARK BEER IT IS THEN!

louie · « **Reply #23 on:** November 05, 2004, 12:35:57 AM »

I found that this drilling killed the backend reaction. I found it very sensitive to mistakes as the ball really goes where you throw it. A really accurate player would probaby love it as it would help them control a strong unpredictable backend. For most lane sprayers (myself included) it is not a good drill because it won't cover up your mistakes. You can really see the core trying to fight the cover at the breakpoint. It is a weird look.
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