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Author Topic: rolling over thumbhole  (Read 2202 times)

JohnN

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rolling over thumbhole
« on: February 27, 2008, 07:44:39 AM »
Got a new Passion acouple of weeks ago and am very happy so far. Ball seems to carry even very light hits and ones that come in a tad high.Shot 708 and 665 missing 2 easy spares both weeks. One thing I have noticed though is if I do not come out of the ball just right it goes over the thumbhole once or twice.I have never noticed this with any other ball.Ball is 500 abralon with no balance hole. Was wondering if a balance hole might help.Drilling is below:
                     
                      P 0 0
                         cg
                         0
                        RAD+
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xxxxxxxxxxxx MR300

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Re: rolling over thumbhole
« Reply #1 on: February 27, 2008, 07:36:46 PM »
the drill pic is messed up in less you are lefty and use a sarge easter grip... anyway my secret agent dose the same thing
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Edited on 2/27/2008 8:37 PM
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JohnN

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Re: rolling over thumbhole
« Reply #2 on: February 27, 2008, 07:44:27 PM »
I am left handed. Should look like this:


                               P  O   O


                                     CG

                                     O
                                    RAD
The pin is about 1" left of ring finger,Cg is just a little right of grip center, and Rad is just below thumb.
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JohnN

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Re: rolling over thumbhole
« Reply #3 on: February 27, 2008, 07:57:27 PM »
I am left handed.The pin is about 1 inch left of the ring finger. The CG is slightly right of grip center, and the RAD+ is right below the thumb.My attempt at a diagram isnt coming out right.



                   
       


                                     

                                     
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scothomas

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Re: rolling over thumbhole
« Reply #4 on: February 27, 2008, 08:59:20 PM »
I have a high track and have to be careful with a lot of layouts that cause the ball to flare up early because it will roll over the thumbhole too much. Drilling a balance hole above your PAP should tighten the flare and possibly keep the track off of the thumbhole. Talk to your ball driller about this though because this will likely tame your current ball reaction.
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tfav44

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Re: rolling over thumbhole
« Reply #5 on: February 28, 2008, 01:14:01 PM »
i use to have that problem, i also am a lefty, try a wrist brace, the high track is because of wrist posistion.


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lilmike2782

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Re: rolling over thumbhole
« Reply #6 on: February 28, 2008, 01:32:08 PM »
I track high (i am right handed) so i have to be careful on how i drill my balls.  sounds like to me the cg is too low.  this is an opinion, and maybe a bad one, but plug the ball and shift it like this.


----p
-----o-o
------cg
--------
--------
------o

JMO from someone that has had similar problems.  but then again, the way you throw the ball may just not work with that product.  a wrist brace can help as well.
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JohnN

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Re: rolling over thumbhole
« Reply #7 on: February 28, 2008, 02:49:32 PM »
Think I finally figured out how to do this.
---P  O  O



-------cg

--------O
-------RAD
I dont think I want to change to much.I just started wearing a brace again this year. Will talk to driller to see what he thinks but if I can average 230 with a couple of thumb bumps every week I guess that will have to do.
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JohnN

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Re: rolling over thumbhole
« Reply #8 on: February 28, 2008, 02:49:32 PM »
Think I finally figured out how to do this.
---P  O  O



-------cg

--------O
-------RAD
I dont think I want to change to much.I just started wearing a brace again this year. Will talk to driller to see what he thinks but if I can average 230 with a couple of thumb bumps every week I guess that will have to do.
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JohnN

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Re: rolling over thumbhole
« Reply #9 on: March 04, 2008, 09:51:28 PM »
Asked my driller what he thought about the ball going over the thumbhole. He asked how I was shooting.When I told him he said get out of my shop. Shot 752 tonight. Think he was right.
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Steve Richter

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Re: rolling over thumbhole
« Reply #10 on: March 05, 2008, 06:46:46 AM »
John:

Don't overlook span and thumb BEVEL as possible culprits.  If the thumb hole locks you in there a bit longer you could be thumbing-down the ball because you're trapped inside it.  If you think the bevel looks different than other balls, make sure you have a longer transition.  Think: radius on street curbing = bad, shape of a waterfall = good.
--------------------
Steve Richter
Roto Grip Amateur Staff Member
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dizzyfugu

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Re: rolling over thumbhole
« Reply #11 on: March 05, 2008, 07:13:05 AM »
I had some time when I used to track over the thu8mb hole, too, but generallyon any ball. I found that it was my wrist which was tilted to the inside, instead of straight ahead in one line with my lower arm. This raised the track for almost 1", and with some concentration on my hand position, this vanished again.

Currently, I have a similar phenomenon with my freshly drilled Blue Hammer, despite a wrist support. With this single ball I also tend to track very high, and I haven't figured out the reason so far. It could be that it is a bit heavier than my other 15 lbs. ball, so that it puts more force on my wrist and again rises the track like before.
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