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Author Topic: Do you have to weight ball before you lay it out?  (Read 2011 times)

Aloarjr810

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Do you have to weight ball before you lay it out?
« on: March 30, 2007, 03:26:13 AM »
Just a quick question.
This came up in a discussion about laying out your own ball.
It was said you can't layout a ball properly unless you weight it first.

So do you have to weight it first to lay it out?

I know the box has the weights on them and you
might want to check them first to see if they are right.
and You'd weight it after drilling to check the statics.




Edited on 3/30/2007 1:06 PM
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kmanestor22

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Re: Do you have to weight ball before you lay it out?
« Reply #1 on: March 30, 2007, 02:15:31 PM »
I see nothing wrong with putting lines on the ball and then weighing it.  As long as it is weighed before it's punched up there is no harm done.  The only reason I would weigh the ball before laying it out is if I suspect the cg is mismarked or marked twice.  That and verifying that the ball is the weight that is says on the box.
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JohnP

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Re: Do you have to weight ball before you lay it out?
« Reply #2 on: March 30, 2007, 03:31:44 PM »
I weigh everything except plastic amd entry level reactive resin balls before I lay them out.  The cg is very seldom exactly correct, and I have found them off by as much as 1 1/2".  TW is usually within 1/2 oz.  --  JohnP
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kmanestor22

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Re: Do you have to weight ball before you lay it out?
« Reply #3 on: March 30, 2007, 03:42:17 PM »
Plastic balls are the ones you should weigh.  I have seen many light target zones drilled up with no side weight according to the cg and the kids can't keep them on the lanes.
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laufaye

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Re: Do you have to weight ball before you lay it out?
« Reply #4 on: March 30, 2007, 08:15:57 PM »
quote:
Plastic balls are the ones you should weigh.  I have seen many light target zones drilled up with no side weight according to the cg and the kids can't keep them on the lanes.
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Where is the bait?  I'm goin' to jail!!! - Chocolate GAYzer


So if you drill a plastic with negative weight it won't hook?
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Aloarjr810

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Re: Do you have to weight ball before you lay it out?
« Reply #5 on: March 30, 2007, 10:36:12 PM »
Ok I passed on the info from here. now heres the reply I got-

 "You would have to weigh the ball to determine top weight, side and finger/thumbweight. Remember, there are limits to how much of each you may have in order for the ball to be legal. And, weight holes can't solve all weight problems due to the fact that the maximum depth of a weight hole is 3 inches. So, you might say, "you could remove more weight by making the weight hole with a larger diameter" and yes you can do that, but the ball dynamics will change."

The way I take this is that you have to Find the top weight, side and finger/thumbweight before you lay it out or drill it?

Heres a link to the thread about this.
http://www.bowlingballsandmore.com/link.asp?TOPIC_ID=102&view=lasttopic
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JohnP

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Re: Do you have to weight ball before you lay it out?
« Reply #6 on: March 31, 2007, 01:49:09 PM »
There are only three things you can check on a dodo scale on an undrilled ball, cg location, total weight, and top weight.  From that you can estimate what the final weights will be for the layout you're going to use, but you have to weigh the ball after drilling to be sure your estimates were correct.

 
quote:
And, weight holes can't solve all weight problems due to the fact that the maximum depth of a weight hole is 3 inches.


There is no USBC rule on maximum depth of a balance hole.  Your driller's press may not be capable of drilling a deeper hole.  There is, however, a USBC rule saying that the maximum diameter of a balance hole is 1 1/4", including any bevel. You can also adjust static weights by drilling the thumb hole and finger hole(s) extra deep.  --  JohnP
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