Greetings!

I have a customer who is claiming that their Power Groove is defective due to the fact that the ball flares over the thumb the last 2 revolutions......

The ball is drilled pin under ring finger and he is a high rev player.  I know that the drilling he put on it is causing the ball to flare over the thumbhole, the question I have is where can I put a weight hole to move the track a little to the left (he is a lefty) to make the defective ball not defective...

Thank you for all your assistance on this!

Mike
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“Every now and then when your life gets complicated and the weasels start closing in, the only cure is to load up on heinous chemicals and then drive like a b@$tard from Hollywood to Las Vegas ... with the music at top volume and at least a pint of ether.”

John,

I am not quite sure to be honest as I have not seen him throw this particular ball.  It was left at the pro shop with a note on it and I know the bowler who throws it well.  The note said thumb hole which I found slightly weird.

I am hoping he will come in one day and throw it for me to verify.....
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“Every now and then when your life gets complicated and the weasels start closing in, the only cure is to load up on heinous chemicals and then drive like a b@$tard from Hollywood to Las Vegas ... with the music at top volume and at least a pint of ether.”

You've got to find out whether it's hitting the thumb or fingers.  Can you tell anything from the track?  If it is the fingers, a large weight hole in the thumb positive quadrant should move the bowtie up enough to get it off the finger holes.  That's what the Rico layout uses.  --  JohnP

Since its clipping on the last revolutions it more than likely clipping the finger hole. Drilling pin down will sometimes cause the ball to flare in reverse (closer to the fingers instead of the thumb) It could also be hitting a high or low spot if there is plugwork.

You cannot move the track but you can move the bowtie. Generally the bowtie is going to be adjacent to a line drawn from the pin to wherever the weighthole is. So an xhole low should raise it and an xhole high should lower it.
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"USBC is concerned that technology has overtaken player skill in determining success in the sport of bowling"

LL -- For a 3/4 roller using a ball with a "standard" layout, if he hits the thumb hole it will usually be on the first few revolutions.  If he hits the finger holes it will usually be on the last few revolutions.  Normal track flare is away from the thumb hole.  With a high bow tie, track flare is also away from the finger holes, although not much.  However, if the bowtie is below the finger holes the flare will be toward the finger holes.  --  JohnP

T-God...

Will do that hopefully tonight...haven't had a chance to get into the shop yet.

I can't verify which hole it is hitting as was left with a note in the thumb (which is a switch grip).  I know the bowler who left the note and am familiar with his game.  Definitely not a full roller but a very hi-rev player.  I will try and get some pics and such to show you the ball layout.

Thanks all for the advice so far....

Mike
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“Every now and then when your life gets complicated and the weasels start closing in, the only cure is to load up on heinous chemicals and then drive like a b@$tard from Hollywood to Las Vegas ... with the music at top volume and at least a pint of ether.”

bluerrpilot's link shows a drawing that IS for a leftie.  Or maybe he changed the drawing after srlunatic's post.  Either way, first priority is to determine whether the ball is hitting the thumb or finger holes.  --  JohnP

I think Blue was right and I was dorked up looking at his post..*laugh* I am senile sometimes...

Unfortunately he has a switch grip and didn't leave it with the ball so I can't really get weights on it until I get the slug in there. I also looked dang hard for any type of track but the surface is pretty spotless...

I haven't been able to get a hold of the person to get the thumb slug...but have a friend with a switch grip so will use that to get approx weights...

Thanks again for everything!

Mike
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“Every now and then when your life gets complicated and the weasels start closing in, the only cure is to load up on heinous chemicals and then drive like a b@$tard from Hollywood to Las Vegas ... with the music at top volume and at least a pint of ether.”