Fit issues

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Rjf300
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Fit issues

Post by Rjf300 »

I've been having problems getting out of the ball clean just double checking a few pitch questions. I've always used east slide on my thumb before each shot and also can never use white tape on the back of my thumb. Here is a few pics of the coke can test currently using 1/8 reverse and 1/8 left

Span is 4 9/16 x 4 11/16
Mf, is 1/2 left 3/16 rev, Flex is 70
RF is 5/16 right 3/16 rev Flex is 70
span is pretty good imo.
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Last edited by Rjf300 on July 6th, 2017, 1:54 am, edited 2 times in total.
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bowl1820
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Re: For issues

Post by bowl1820 »

Rjf300 wrote:I've been having problems getting out of the ball clean just double checking a few pitch questions. I've always used east slide on my thumb before each shot
If you've always had to use Easy slide in your thumb hole, then you've always had a problem with your thumb hole. You shouldn't have to powder your thumb to get out clean.

and also can never use white tape on the back of my thumb.
White tape isn't meant to be used in the back of the hole, it's for gripping and used in the front of the hole.

Black tape is for the back of the hole.
Here is a few pics of the coke can test currently using 1/8 reverse and 1/8 left
"REMEMBER, it isn't how much the ball hooks, it's where."
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flibblesh
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Re: For issues

Post by flibblesh »

bowl1820 wrote:White tape isn't meant to be used in the back of the hole, it's for gripping and used in the front of the hole.

Black tape is for the back of the hole.
I disagree, white tape can be used on the back of the thumb as well, it's mostly down to the player.
Steven Bourgaize

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bowl1820
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Re: For issues

Post by bowl1820 »

flibblesh wrote:
I disagree, white tape can be used on the back of the thumb as well, it's mostly down to the player.
Sure you can use it in the back if you want, but thats not what it was originally for.
"REMEMBER, it isn't how much the ball hooks, it's where."
Rjf300
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Re: Fit issues

Post by Rjf300 »

Alright can anyone help with the issues pics are posted
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Re: Fit issues

Post by Arkansas »

I'd recommend taking your thumb pitch to 0,0 if your span is correct. If your thumb is fully seated in the picture you posted of your fingers over the insert, the span is good.
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bowl1820
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Re: Fit issues

Post by bowl1820 »

Looking at the photos, mainly the last one.

1-your thumb appears pretty wide, so you should be using a oval thumbhole. If not change it.

2- if the brusing/callous visible on the tip side and in the middle of the nail is do to bowling, that usually mean too much reverse and need more right pitch based on the jayhawk fitting tips.

Going by the bottom pic, it looks like you need closer to a 1/4" left pitch.

Note solving fit problems by way of the internet is difficult, do to not being able to check the hand and fit directly. So any answer has to be taken with a grain of salt.

I would suggest doing the full wiki fit process to establish a base line fit, to compare to your current fit.
Last edited by bowl1820 on July 6th, 2017, 6:14 pm, edited 2 times in total.
"REMEMBER, it isn't how much the ball hooks, it's where."
Rjf300
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Re: Fit issues

Post by Rjf300 »

Yes I use oval 60deg oval the mark on my nail is not bowling related
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Re: Fit issues

Post by Arkansas »

Rjf300 wrote:Yes I use oval 60deg oval the mark on my nail is not bowling related
If the mark is not bowling related, then I'd go to 1/4 reverse and 0 lateral. The first picture of the coke can test is the correct way to do it. If you're at 1/8 reverse now and you want to get out cleaner, and 1/8 more reverse.

My previous suggestion was based on the assumption the mark on the thumb was bowling related. That type of mark usually indicates too much reverse or too short of a span.
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Re: Fit issues

Post by JohnP »

My first question to anyone having problems with releasing the thumb is - are you "knuckling" your thumb. By knuckling I mean bending it at the knuckle and gripping with the tip of your thumb instead of the base. Looking at your callouses I think you're knuckling. -- JohnP
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bowl1820
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Re: Fit issues

Post by bowl1820 »

Arkansas wrote:
The first picture of the coke can test is the correct way to do it.
The reason I think the last pic is more accurate is because, The coke can test is based on Mo's fitting tubes which come in various sizes to match hand size.

If a smaller tube (can) is used the thumb tends to bend as it wraps around the tube, which causes it to show too much right pitch depending on just how small the tube is. (Which appears to be happening in the first pic).

Conversely if the tube is too large, it will show too much left.

The thumb should be fairly straight when doing the test, because the thumb is straight in the ball not bent.

Of the 3 pictures the last imo appears to have a happy medium between the others, not bent and not just held up like in the 2nd.

So using the last, it looks to be around 3/16-1/4" left.


Note if you do go to more reverse, make sure you adjust your span accordingly.
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Rjf300
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Re: Fit issues

Post by Rjf300 »

That paint can is 2.5 dia
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EricHartwell
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Re: Fit issues

Post by EricHartwell »

Somethings to consider...

You are already using an oval thumb 60*, Is the angle correct?

Are all of your balls drilled the same, the same problem hanging up in all of them including a spare ball if you use one?

You list your rotation from 0-60*, When using higher rotation, are you turning the ball while it is still on your thumb?
Eric Hartwell

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Re: Fit issues

Post by Arkansas »

bowl1820 wrote:
The thumb should be fairly straight when doing the test, because the thumb is straight in the ball not bent.
I own a set of the tubes. I've been shown by Mo how to use them at the Innovative Pro Shop class. I've had Mo use them with me on several occasions since then also. He has you squeeze to determine the pitch. Have you ever picked up a can with a straight thumb? If the thumb was meant to be straight, he probably would have used cubes instead of cylinders.

There's also this quote. "The best method I know of is to get a can where your thumb and finger almost touch. If your thumb points between the middle and index finger, your lateral thumb pitch is zero. For every finger width in either direction add 1/4" lateral pitch." viewtopic.php?f=13&t=576&p=4966" onclick="window.open(this.href);return false;

The thumb will have to bend for it to almost touch the fingers.
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Re: Fit issues

Post by J_w73 »

First, make sure you aren't knuckling with your thumb. If that bruise on the tip is from bowling, I think you need more lateral right pitch in your thumb. From the tubes I would say you should be 1/8 right, not 1/8 left.
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