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Author Topic: excessive top weight  (Read 8466 times)

pin-smasher

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excessive top weight
« on: June 14, 2011, 05:56:42 AM »
what is the best way to bring the top weight down,tied drilling thumb and fingers extra deep but still is over on top weight??? any ideals??

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bullred

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Re: excessive top weight
« Reply #1 on: June 14, 2011, 02:12:42 PM »
pin.....unless you are over 3 oz.  don't worry about it.   If you are over 3 oz and already have a "balance" hole you're kinda stuck.    You could plug the balance hole and redrill it at a severe angle  to the top  of the ball..   If you do this be careful, it will be an oval hole and the oval will exceed 1 1/4" if you use a larger bit.


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Juggernaut

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Re: excessive top weight
« Reply #2 on: June 14, 2011, 03:15:17 PM »
If the ball doesn't have a weight hole yet, you can do as advised above, or you could even put the weight hole directly on the topweight to reduce it to a "legal" level.

 

 If you already have an extra hole in it, or need one somewhere besides the topweight to make the other weights in the ball "legal", you're in a tough spot.

 

 TECHNICALLY, you are allowed extra gripping holes for your other fingers, but you're supposed to use them for that purpose if you drill them.

 

 TECHNICALLY, you are allowed a small vent hole for each gripping hole drilled. TECHNICALLY, you are allowed up to 12 holes in the ball. A hole for each finger (5), a vent hole for each finger (5 more), a weight hole, and a mill hole (to check for hardness.).
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pin-smasher

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Re: excessive top weight
« Reply #3 on: June 14, 2011, 04:54:54 PM »
yes,i put a balance hole near my pap to bring side weight down but top weight is still to high,should i move the hole closer to grip of ball or ???

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Juggernaut

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Re: excessive top weight
« Reply #4 on: June 14, 2011, 06:28:36 PM »
Exactly how much weight do you need to remove?

 

 With it already having an extra hole on the pap, you are in a hard position. If you needed an extra hole to make the sideweight "legal" and STILL end up with too much topweight, what kind of weights did you start out with, and how is the ball drilled?

 

 You might be able to get where you need to go by plugging the weighthole and moving it towards the topweight, but it sounds like it will be a tricky maneuver.
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pin-smasher

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Re: excessive top weight
« Reply #5 on: June 14, 2011, 06:32:10 PM »
the side weight was on the max but legal i drilled a hole thinking it would bring down side weight as well as drop the top weight a bit but top didnt go down enough,right now im a touch over 4oz top,ball and a really crazy top weight since it was a blem

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Juggernaut

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Re: excessive top weight
« Reply #6 on: June 14, 2011, 07:35:52 PM »

 OK.

 

 If the sideweight was maxxed out, but still legal, your main problem was getting the topweight within the limits, so that is where you need to concentrate your efforts.

 

 depending on your pap measurements, putting a hole there may, or may NOT, have an effect on the topweight, depending on how far out towards the pap your cg is placed.

 

 I think your "problem" can be fixed, but you will have to plug the current weighthole, then move it to a more appropriate place where it will have far more effect on the topweight than the sideweight. This is going to, MOST LIKELY, mean moving it towards the gripping area of the ball and away from the pap.

 

 Once you have the weighthole plugged, re-weigh the ball for top and sideweights, so that you'll know exactly what needs to be removed to get the ball within the limits.



pin-smasher wrote on 6/14/2011 6:32 PM:the side weight was on the max but legal i drilled a hole thinking it would bring down side weight as well as drop the top weight a bit but top didnt go down enough,right now im a touch over 4oz top,ball and a really crazy top weight since it was a blem

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batbowler

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Re: excessive top weight
« Reply #7 on: June 14, 2011, 08:14:13 PM »
With the crazy high top weight, how did you lay the ball out? Did you lay the ball out and weigh it before drilling? When I have a ball that's a blem and it has crazy specs, I always do a layout and weigh it before drilling to see if I need to modify the layout!!! Now that's it's drilled you'll have to plug the weight hole and drill it closer to the cg/top weight! Where is the cg located? Cause that's the heaviest place on the ball and it sounds like it had very high top weight! Just my $.02, Bruce


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pin-smasher

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Re: excessive top weight
« Reply #8 on: June 14, 2011, 08:35:45 PM »
i drilled it pin under bridge with cg in middle of grip.I didnt really look at the top weight on the box tell after i drilled it up(my bad) then i noticed the crazy top weight.Ive never drilled a ball with those kind of specs so this will be a leaning experience.So i think this ball will be a paper weight i think...lol


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Juggernaut

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Re: excessive top weight
« Reply #9 on: June 14, 2011, 09:35:37 PM »

  With that drilling, you might be surprised. Just plug the weighthole and then weigh it to see where you are. If your sideweight is legal, even though it is maxxed out at 1 oz, and your topweight is at 4 oz, you really only need to remove 1 oz of topweight to make it "legal".

 

 According to this chart (http://www.jayhawkbowling.com/Pro_s_Corner/Pro_Shop_Forms/weightremoval.pdf), you can remove 1 oz with a 1 inch hole drilled a little over 1 1/2 in deep.

 

 Putting a hole like that on your grip midline (NOT CENTERLINE), and leaving it more towards the gripping area of the ball than the side of the ball, SHOULD allow you to remove enough weight to get the ball within legal specs and still have a lot of dynamics left in it.

 

 IF IT WERE ME, I would put the new weighthole just far enough off center to allow it to be out from under my hand, which will MOST LIKELY remove a bit of sideweight as well. I don't know how deep your finger and thumb holes are, but you might be able to take them down a bit as well. At this point, every little bit helps.



pin-smasher wrote on 6/14/2011 8:35 PM:i drilled it pin under bridge with cg in middle of grip.I didnt really look at the top weight on the box tell after i drilled it up(my bad) then i noticed the crazy top weight.Ive never drilled a ball with those kind of specs so this will be a leaning experience.So i think this ball will be a paper weight i think...lol


 
Edited by Juggernaut on 6/14/2011 at 9:37 PM
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qstick777

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Re: excessive top weight
« Reply #10 on: June 15, 2011, 05:19:08 AM »
How does the ball roll?   I don't want to bring up the years old debate, but the USBC weight rule is just some arbitrary number (or so "they" say), so I'm curious as to how the ball rolls.  I don't think I've ever bought a ball that started with more than 4oz of top, so I can't imagine having one with that after drilling.
 
Do you use grips and slug?  How much deeper did you go with the fingers and thumb? 
 
Having fully plugged balls before, I can tell you that plug material is lighter than what was removed.   How much lighter.....I don't know.  I guess that depends on the type of plug.  Ebonite clear plug seems to be slightly lighter than Wizard or other quick plug material.
 
This is what I would try, and since it sounds like you might be willing to write the ball off as a loss anyways it couldn't hurt to try.    
 
You said the CG was in your grip center.   I would drill directly on the CG with the goal of taking out at as much weight as possible.....probably a hole at least the size of a thumb insert - 1 1/4" x 3"
 
Last time I weighed a Vise insert it was 2.2oz, and using the Jayhawk reference chart a 1 1/4 x 3" hole will take out around 2.85oz.   If you can go deeper you'll likely not have any problem taking out 3oz.
 
Then plug that hole.  Chances are pretty good that you'll come really close to getting a full 1 oz difference...maybe close enough that you can get the rest by going deeper on thumb and fingers.
 
Of course doing that is going to hit the core and alter the ball dynamics.  Maybe you'll get lucky and have it be the best ball you've ever thrown?
 
BTW, what ball are we talking about?
 
 
pin-smasher wrote on 6/14/2011 8:35 PM:i drilled it pin under bridge with cg in middle of grip.I didnt really look at the top weight on the box tell after i drilled it up(my bad) then i noticed the crazy top weight.Ive never drilled a ball with those kind of specs so this will be a leaning experience.So i think this ball will be a paper weight i think...lol


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Xx 12 X 300 xX

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Re: excessive top weight
« Reply #11 on: June 15, 2011, 07:07:44 AM »
Before you plug the weight hole, let us know how deep your gripping holes are.   You can go as deep as you want in those since there is no USBC rule on them.   If your only going 3 inches,  you can go 4 or 5 inches with them.   Depending on your drill press/mill,  you might have to rig something up to let the ball sit closer to the drill bit.   You might be able to crank the head of the drill down closer to the ball for this one time.
 
 
I think it was either last year, or the year before on the PBA tour truck the Brunswick people had a ball drilled for PBIII that had a 7 or 8 inch deep weight hole.   It was nearly through the ball.  
 
If your not that much over the top weight rule, you might be able to just get it with much deeper holes. 
 


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kidlost2000

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Re: excessive top weight
« Reply #12 on: June 15, 2011, 09:07:34 AM »
You can drill your existing finger holes deeper but at a certain point your going to have a negative effect since you will be removing weight from the oppisite side of the ball. I wouldn't go over 3.5" to 4" deep. Also the closer the hole gets to the middle of the ball the less effect it will have on your top weight.
 
If the cg is on your center grip line I'm kinda curious how your side weight was almost over an ounce.
 
As mentioned you will want the new weight hole much closer to your grip then further away. The further away you get from your grip the less overall weight it will remove from the top of the ball because your getting closer to in between the top and bottom. I would go to the center of your grip and move the weight hole right (positive if RH) by about 1-2" and drill there.


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JohnP

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Re: excessive top weight
« Reply #13 on: June 15, 2011, 10:07:41 AM »
Drilling all three gripping holes deeper might get you legal.  If not, you can drill a pinkie hole as deep as you want.  USBC rules state you have to be able to demonstrate that it can be used as a gripping hole, but they don't say you ever have to actually use it.  However, your pinkie finger would be laying over the hole and that might feel strange.  --  JohnP


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Stan

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Re: excessive top weight
« Reply #14 on: June 15, 2011, 02:37:00 PM »
Do not understand.  If your grip was offset from the cg and you drilled a balance hole to make the side weight legal, I can not understand how the top weight is still off.  The top weight is located below the cg, since it is offset from the grip, you would have had a lot of side weight.  If you removed the additional side weight, then you also removed the top weight.  What am I missing ????


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