First time drilled ball

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zerojin92
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Joined: May 22nd, 2017, 9:33 pm

First time drilled ball

Post by zerojin92 »

drilled Roto Grip hectic but the driller did not measure my hand or anything.

I am not sure if it fits on my hand. How do you know if it is right for you?
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EricHartwell
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Joined: April 5th, 2011, 12:24 am
Positive Axis Point: 4-3/4" and 1/2"up
Speed: 16 off hand
Rev Rate: 330
Axis Tilt: 12
Axis Rotation: 45
Heavy Oil Ball: Radical Tremendous, EVO solid, Hammer Obsession
Medium Oil Ball: EVO pearl, True Motion, Columbia Command, DV8 Intimidator
Light Oil Ball: Blue Hammer
Location: Michigan

Re: First time drilled ball

Post by EricHartwell »

I think you already know the answer if you are questioning it.
I am not an expert in fitting but your pics look like the fit is not good.

I suggest posting a pic with only your thumb in the ball with your fingers laying across the holes.
This will tell much more about the span.

The holes look huge. Do you have to squeeze to hang on to it?

A 10 pound ball? Seems pretty light, I question the choice of ball weight.
How old are you?
How big a person are you?
Do you consider yourself athletic?
Do you feel you have average/normal strength?
Eric Hartwell

Right Handed
PAP 4.75" up 1/2"
45* rotation
12* tilt
330 rev rate
16 mph off hand
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EricHartwell
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Trusted Source
Posts: 4080
Joined: April 5th, 2011, 12:24 am
Positive Axis Point: 4-3/4" and 1/2"up
Speed: 16 off hand
Rev Rate: 330
Axis Tilt: 12
Axis Rotation: 45
Heavy Oil Ball: Radical Tremendous, EVO solid, Hammer Obsession
Medium Oil Ball: EVO pearl, True Motion, Columbia Command, DV8 Intimidator
Light Oil Ball: Blue Hammer
Location: Michigan

Re: First time drilled ball

Post by EricHartwell »

I think you already know the answer if you are questioning it.
I am not an expert in fitting but your pics look like the fit is not good.

I suggest posting a pic with only your thumb in the ball with your fingers laying across the holes.
This will tell much more about the span.

The holes look huge. Do you have to squeeze to hang on to it?

A 10 pound ball? Seems pretty light, I question the choice of ball weight.
How old are you?
How big a person are you?
Do you consider yourself athletic?
Do you feel you have average/normal strength?
Eric Hartwell

Right Handed
PAP 4.75" up 1/2"
45* rotation
12* tilt
330 rev rate
16 mph off hand
guruU2
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Location: Camp Springs MD

Re: First time drilled ball

Post by guruU2 »

zerojin92 wrote: the driller did not measure my hand
Find a professional bowling technician and have him/her fix this mess.
-Gary Parsons
If one does not know one's product, one can not manage nor promote the product one does not know.
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bowl1820
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Re: First time drilled ball

Post by bowl1820 »

About the main thing that can be told from the photos is

The ball was drilled with a conventional grip, not a fingertip.

And the fingerholes appear to have a too much bevel.
"REMEMBER, it isn't how much the ball hooks, it's where."
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