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Author Topic: Dynamics of a ball  (Read 828 times)

gHatMan

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Dynamics of a ball
« on: February 25, 2010, 11:15:41 AM »
I've wanted to try a layout with the pin 4 1/2 to 5 1/2 inches above the finger. I'm trying to learn more about finger weight, top weight and other weights that effect the dynamics of a bowling ball. Someone correct me if im wrong about this. If I put the pin five inches above the bridge, that puts the cg of my ball an inch or two above my fingers. This will give my ball too much finger weight and I would have to put a weight hole in my ball. If so, do I put the weight hole near my fingers? Thanks in advance.
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I feel bad for the bowler''s defenceless equipement when the bowler is not bowling up to par. . . .don''t you?

 

dizzyfugu

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Re: Dynamics of a ball
« Reply #1 on: February 26, 2010, 01:00:14 AM »
You can drill the fingers deeper in order to compensate, and better order a low TW pin-in ball if you plan such a layout. Will IMO make things (at least a bit) easier.

Good luck.
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J_w73

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Re: Dynamics of a ball
« Reply #2 on: February 26, 2010, 01:22:48 AM »
a pin  4 1/2 to 5 1/2 inches above the fingers is going to put the pin like 7 or 8 inches from your PAP..not a good thing...

What kind of reaction are you looking for??
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18 mph,350 rpm,PAP 5 1/2 x 3/8up, 15 deg axis tilt, varied rotational axis deg.. usually 45+
HighGame 300 x 4, High Series 808
Book Average 205,PBA Xperience 185
350 RPM, 17 MPH

gHatMan

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Re: Dynamics of a ball
« Reply #3 on: February 26, 2010, 02:40:01 AM »
Im not really looking for anything out of this layout, just curious of what it would do. I have an ultra zone sitting in my room for the longest so i want to try something unique. What ball reaction will i have with the pin being this far from my pap? I have pin axis layout with the pin on my pap and this ball doesnt hit hard at all, will this layout be the same?
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I feel bad for the bowler's defenceless equipement when the bowler is not bowling up to par. . . .don't you?

J_w73

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Re: Dynamics of a ball
« Reply #4 on: February 26, 2010, 09:31:20 AM »
quote:
Im not really looking for anything out of this layout, just curious of what it would do. I have an ultra zone sitting in my room for the longest so i want to try something unique. What ball reaction will i have with the pin being this far from my pap? I have pin axis layout with the pin on my pap and this ball doesnt hit hard at all, will this layout be the same?
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I feel bad for the bowler's defenceless equipement when the bowler is not bowling up to par. . . .don't you?


you don't ever want to get the pin farther than 6 3/4 from the PAP.. this will be the max as it will put the core in an upright position.. you never really want to go pant 6- 6 1/4 " from the PAP to be safe.. and don't really want this drilling unless you have a ton of revs or want some sort of trick layout..

but what you are trying to do will make the ball go longer and more angular on the backend.. pretty much the complete opposite reaction that you have now..

sounds like the ball is about a 3-4" pin to cg.. Check something like the  morich double thumb drilling...but use a  4 1/2 - 5 inch from the PAP with the MB about an inch right of the thumb hole.. if the only other ball you have is the pin on the pap layout then you could go 4 " pin to PAP and it is going to be night and day to what you have now.. the longer pin to pap will flare less and get the ball a little farther down the lane and be a bit more angular on the backend..

try to lay it out so it will be legal without the weight hole first.. throw it and see if you like it and then if you want to fine tune the reaction you can put a weight hole in it..


http://www.morichbowling.com/Drilling/DoubleThumbDrilling/DoubleThumbDrilling.htm


check out this site.. it will explain a bit of the basics.. its kind of old so some of the info is a little dated but it give a good starting point..

http://www.bowlingfans.com/jeff/ballreactionbasics.html

let me know if you need more clarification and I'll help you out..
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18 mph,350 rpm,PAP 5 1/2 x 3/8up, 15 deg axis tilt, varied rotational axis deg.. usually 45+
HighGame 300 x 4, High Series 808
Book Average 205,PBA Xperience 185
350 RPM, 17 MPH