Ummmm, this year I have put probably 300 weightholes in about 60 balls.
This may not qualify as professional driller but here is the basic on this weighthole recommendation.
I have seen weightholes increase flare(large ones), however I believe reaction can be increased without increasing flare.
The most simple example.
Pin on pap drilling all would agree flare is virtually nonexistant. Put a weighthole on pap and reaction is minimal as is flare. NOw plug hole and redrill weighthole 2 to 3 inches past pap on a line from top of ring finger thru pap. Voila = reaction is dramatically increased but flare is not!
(Yes, flare probably will be slightly increased if a 1 1/8 inch weighthole is added).
My experiments with multiple weightholes on the same balls (most holes not deep enough to hit core)
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1: The most common, weightholes on pap add earlier roll midlane and stability(less backend)
2. Weightholes past pap about 1 inch, drilled with 0 lateral pitch seem to maintain the reaction if the ball is drilled illegal and thrown and then a legal making weighthole added. In other words midlane is not increased with this weighthole and backend stays the same as when illegal.
3. Weightholes on the VAL or pap and angled outwards(from grip center) 1/2 inch. These weightholes are awesome, often adding midlane and still maintaining the backend of an over limit sideweight ball, which is now legal.
4. Weightholes past pap one inch and angled out 1/2 inch, these weightholes do not add midlane and then the outward angle maintains all the backend of the ball when thrown illegally.
There are many caveats above. Balls where the weightholes take sideweight down from about 1/2 ounce down to 0 or negative do start to add more and more midlane. Weightholes however as described above taking sideweight down to the 3/4 of an ounce to 1/2 ounce area will give the above described reactions.
I have notes and tests on propably 200 to 300 tests of these concepts, others tested and not discussed, weightholes 2 1/4 inch past pap, weightholes 3 3/8 past pap, weightholes inside pap, weightholes down and inside pap, weithholes on grip center, weightholes of 1 1/4 inch size, weightholes deep and 1/2 inch.
Oh you get the picture, too many!
It's been fun but I wouldn't recommend it for others who want to be good bowlers! Let some sort of nut like myself do these for you!
REgards,
Luckylefty
PS If you really want to be a nut, I highly recommend everyone throw their cg kicked out balls illegal in a practice session, THEN put your weighthole in. Not the usual method of drilling illegal, guessing on a weighthole and then putting a hole in! Then you will see the validity of the ideas above.
PPS For example I purchased a ball from Charlest, he and I discussed the reaction. The WRW Jr.. He described it as fairly weak like a Columbia Beast.
Well I didn't want that. So I drilled strong and illegal(pre weighthole) and threw. Side weight about 1 1/2 and I loved the look. So I kept it, the reaction stayed just the same with a weighthole placed 6 1/4 (1 inch from my PAP)from the grip center and angled out 1/2 inch!
Balls I want a slight taming on the val and angled out 1/2 inch, balls I want to really smooth out holes on val or pap straight in!
PPPPFINAL Agroves I gave my answer on the basis of the following, a desire to tame(I think that means smooth) and secondly a desire to maintain hit.
The val with 1/2 inch angle works for me! To accomplish both above!
Edited on 1/15/2004 5:12 PM
