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Author Topic: Layout advice on a Gravity Shift  (Read 1842 times)

Dan Belcher

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Layout advice on a Gravity Shift
« on: August 19, 2008, 11:18:02 PM »
For those who don't think to check my profile, my stats first:
  • PAP 5 1/4" over, 3/"4 up

  • 225-250rpm rev rate (measured by analyzing video, so this is a pretty accurate rev rate)

  • Moderate axis rotation

  • Low to moderate axis tilt depending on hand position

  • Faster ball speed, around 17-17.5mph at the deck usually (Qubica measured)


Last night I got a new ball.  I wanted a strong ball drilled strong for opening up the lanes and creating more hook (a big hole in my arsenal), and I was torn between getting a Dimension or a Gravity Shift.  I opted for the Dimension finally (solid coverstock to better handle the carrydown I see in a couple leagues).  I got it drilled with a dual angle layout, but I forget the numbers.  Pin ended up about 1.5 inches above and half inch right of the ring finger, I think we went with either a 4.25" or a 4.5" pin to PAP distance.  No x-hole yet, I can always add one later if I need a little earlier read on some of the different conditions I'll be facing.

Later in the night during league, my buddy asked if I wanted to buy his Gravity Shift he no longer uses much.  Since he only wanted $30 for it, I couldn't say no!  So now I have both of the balls I was considering, but now I need to figure out what to do with the Gravity Shift.

Since I've got the strong roll-in-the-mids, hook-hard-on-the-back layout on the Dimension covered, I'd like to go with something strong but smooth on the Gravity Shift, something to complement my Cell that has a weaker, smooth drill on it.  All my other stuff is pin up and responds to friction quickly, so it'd fill a nice hole in my arsenal I think.  According to my buddy, the ball has a fairly low top weight (I think he said just a touch over 2oz) and what looked like a 3-4" pin.  He'd already plugged and redrilled it once so it'll have two plug jobs before I can drill it for myself.

Any ideas on a good layout?

 

n00dlejester

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Re: Layout advice on a Gravity Shift
« Reply #1 on: August 20, 2008, 07:44:46 AM »
I've seen this ball a ton around my area, and most people have it drilled pin under the bridge.  It revs up quickly due to the core, and the cover takes its time transitioning.  I'd say go for a somewhat longer pin-under drilling like 4.5 - 5 even.  The ball has never over-reacted much for me, it's a great piece.  And that core is truly amazing.  I hope that Storm puts that core in all sorts of gear.
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Dan Belcher

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Re: Layout advice on a Gravity Shift
« Reply #2 on: August 20, 2008, 07:50:19 AM »
That's basically what I've been leaning towards.  But with the low top weight and longer pin on the ball, I'm not sure what mass bias position and x-hole combination I can use to get a good reaction and keep the ball legal.  Pin/CG/MB are all almost exactly in line, I forgot to mention that earlier.

Mr Straight Ball

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Re: Layout advice on a Gravity Shift
« Reply #3 on: August 20, 2008, 09:40:55 AM »
Have you thrown it "as-is"? It might be fine and just needs to be fitted to your hand.
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EboHammer4ever

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Re: Layout advice on a Gravity Shift
« Reply #4 on: August 20, 2008, 09:45:28 AM »
I drilled one of these for my friend with the pin below his bridge and the MB 2 inches to the right of the thumb, no x hole and it is soooo smooth and even reacting.  Just what he wanted.  With the long pin though, if you went this way the CG would end up probably next to your thumb (depending on your span).  but remember, CG NoMaddah.  You would probably just have to drill the thumb to China to balance the weights, but so what.  My friends came with about 2 7/8" pin and the CG ended up just above his thumb and it worked out fine.  I'm going to get myself one of these this fall and drill it the same way.  I hated the original Shift as I tried to drill it like my old Paradigm and expected the same reaction out of it.  No way.  But with this new R2X cover on the Gravity, it mellows out the lane so well that it is a great in between ball to fit when your Dimension hooks too much, and it will. You should not be disappointed.

Roto4ever.

Dan Belcher

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Re: Layout advice on a Gravity Shift
« Reply #5 on: August 20, 2008, 09:45:56 AM »
quote:
Have you thrown it "as-is"? It might be fine and just needs to be fitted to your hand.
--------------------
Baker...Why doesn't my ball hk?
40 Boards & A Ball Tournament Director
www.40boards.com
The left sucks & the right is wide open! R.I.P. Brizmo 6/15/08


The span's actually almost spot-on, that's not an issue.  The problem is the drill he had on it most recently.  Since it originally overlapped with some other gear he had, he plugged it and experimented with a layout that put the pin around 2.5" from his PAP, which means the pin would only be around 2" away from mine.  The ball hooked at the arrows and rolled out for him, and it'd do the same thing for me with that layout!

Edited on 8/20/2008 9:48 AM

Dan Belcher

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Re: Layout advice on a Gravity Shift
« Reply #6 on: August 20, 2008, 01:38:11 PM »
Bump for the afternoon crowd...  anyone else have any suggestions or input?

Jeff Carter

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Re: Layout advice on a Gravity Shift
« Reply #7 on: August 20, 2008, 05:59:49 PM »
Dan i would stay away from asymmetrical cores if i were you. Your above average ball speed and average to below average rev rate dont equate to a good match for asymmetrics. I would reccommend staying with a symmetrical core ball if i were you.
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Dan Belcher

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Re: Layout advice on a Gravity Shift
« Reply #8 on: August 20, 2008, 08:14:32 PM »
Thanks for the input Jeff.  But surprisingly enough, asymmetrics have worked out very well for me just as well as symmetrics.  The preferred spin axis on asymmetricals gives me good predictability and control, so when I miss it at the bottom of the swing a little, it's not going to do something drastically different.  Does that make sense, or am I off the mark with that thought?

And I actually try to keep a good mix of cores.  My past few balls have included symmetrical cores (Special Agent, Spit Fire, Eraser Banshee) and asymmetrical cores (Cell, Awesome Revs, Total NV).  I've shot high series and honor scores with all of them on a variety of conditions.  And for what reference, I'm replacing the Special Agent with the Dimension and effectively replacing the Awesome Revs with the Gravity Shift (a little different reaction, but same basic spot in my bag).

slashrr69

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Re: Layout advice on a Gravity Shift
« Reply #9 on: August 20, 2008, 08:59:28 PM »
hey dan
      just a thought, you might want to try a layout like this.. this will be good for later squads(semis and finals in tourneys)and later THS shifts too..
5 x 5 x 3/4(pin buffer) good for deeper shots with carry down as long as you get it to the dry(40 feet down the lane ).. sand the ball 4000 abby pad no water.. let the oil smooth and shine the ball before putting any polish on it if you need a little more length, but make sure you clean it first when putting the polish on.. something to think about..
                                                               slashrr69
PS.. no extra hole if you can help it..

Edited on 8/20/2008 9:03 PM

Mr Straight Ball

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Re: Layout advice on a Gravity Shift
« Reply #10 on: August 21, 2008, 08:59:44 AM »
If the pin works out to be 2" from your PAP, that layout is designed for control. It should roll early and then not jerk as the ball is using most of it's energy early on. I punched a Dimension like this, SWEET! My game is different from yours as I slide it down the lane at 18.6mph & a 500+ RPM's on average. (CATS #'s) Our PAP is about the same as I am 5.25 across and .5 up. ***Be sure to watch the "pin buffer" as that seems to be a great way to tune the reaction.

Good luck and like I tell my friends...EVERYONE SHOULD HAVE A GRAVITY! I have two now, so you know I like the rock!!!
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Baker...Why doesn't my ball hk?
40 Boards & A Ball Tournament Director
www.40boards.com
The left sucks & the right is wide open! R.I.P. Brizmo 6/15/08

Bakes...Bevel is for wimps!!!
Storm Products, Inc. family member
40 Boards & A Ball - www.40boards.com
Storm Products, Inc. - www.stormbowling.com
Ko's Glen Burnie Pro Shop

Dan Belcher

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Re: Layout advice on a Gravity Shift
« Reply #11 on: August 21, 2008, 09:05:11 AM »
quote:
If the pin works out to be 2" from your PAP, that layout is designed for control. It should roll early and then not jerk as the ball is using most of it's energy early on.
Exactly why I don't like that layout.  I've tried a layout like that before, and it ended up being the worst carrying ball I've ever thrown in my life because it hooked SO early and just quit.  (That's the same reason the guy selling me the ball hated that drill, unsurprisingly)  With my lower rev rate, I actually need to retain energy for the back part of the lane so the ball can rev up far enough down the lane to create good pin carry, which is why I tend to like longer pin layouts.