Jeff -- The main problem with a 3/4 drill for a full roller is that the flare will cause the track to hit the thumb and/or finger holes.  By placing the pin at approx 7:30 from  the grip center, the flare "reverses" itself from a 3/4 flare, and flares away from the thumb and fingers of a full roller track. -- JohnP

Depends on where they placed the pin.

If you had a pin in near the center of the grip, then the pin would be on the track of a full roller, there would be no imbalance and no flare.

As you move the pin to the right and/or up you would create imbalance and flare and as JohnP said the flare then pulls the track towards the holes.

Here is a really good observation/question......with a ball rolling over the thumb hole, or middle finger hole----with as strong as the equipment is today do you think it really has a dramatic affect on the ball at the pins or even the hook potential?

I have a friend that was full roller and he decided he wanted to drill a ball for 3/4 roll. He had one drilled that way, a Storm Eraser Boost. The ball still covered boards and hit very hard. He left fewer 10 pins.......and 8-10 splits. I do not think with the equipment that is on the market today and how strong they are that it is as bad to roll over the thumb hole as it was with urethane, rubber, or polyester.

Any comments?


Edited on 9/3/2003 0:33 AM

Most bowlers don't like to hear the ball hitting a hole, even if it doesn't affect the performance.  They will, whether consciously or unconsciously, try to prevent it by changing their release.  A 3/4 roller can do that fairly effectively by modifying the release position (from 5:00 to 4:00, for example), but a full roller doesn't have that luxury, and can get very frustrated and really screw their game up.  If he can stand the thumping, it probably doesn't really affect the performance much.  --  JohnP

Well, the guy I was talking about who wanted a ball drilled for 3/4 rolls early over the thumb, maybe the first 2-3 revs and the rest of the lane there is no thumping.

I completely agree that the thumping sound is something they would have to get past. I hate it when I hear someone thump. However, I just do not see the ball hitting a finger or thumb hole hurting the game as much as it did with older equipment.

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