Roto Grip Gem to Strong

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rf67pccb
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Roto Grip Gem to Strong

Post by rf67pccb »

I added a Gem to my arsenal to complement my Zenith Pearl. Apparently drilling a match at 75x2.5x40 to my Zenith was likely a mistake. I find that despite release changes it sets up to early (rollout???) The house condition is very dry outside (No 2 to 2 loads) 40 feet medium amount of current conditioner.

I have done everything at this point short of the very high shine, which I will try this Friday.

If that fails, could I dull it up and move right and hope? Or should I plug and go with say 90x1.75x40???

Any ideas out there????
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Re: Roto Grip Gem to Strong

Post by TomaHawk »

The Gem digs into the lane aggressively, especially when it comes in contact with the drier portion of the lane. Polish might be the answer. But, that would be like trying to polish a snow tire. The Gem is a very porous ball.
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Re: Roto Grip Gem to Strong

Post by rf67pccb »

I shined the Gem today for practice tomorrow. I have never seen a ball shine this well. It is like a mirror and hopefully exceeds my expectations Friday. I will report back......
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Re: Roto Grip Gem to Strong

Post by rf67pccb »

Ok.....that definitely did not come close to working. I am plugging this ball this weekend and am open to any suggestions. My Zenith pearl at 75x2.5x40 works ok, but I was looking for only a smidge more carry power. Suggestions for the Gem even drastic high sums and shorter pin if needed.

Eric, et al please help I am totally open at this point. Our wonderful house shot is less that 19 ml with no 2-2 loads if that helps

Also, would a pin on PAP or a 6.75 pin totally defeat the idea of purchasing this ball???? What would the angles be with that long pin? Maybe I should just sell it????????

THANKS!!!!!!
Last edited by rf67pccb on September 4th, 2022, 3:01 pm, edited 1 time in total.
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Re: Roto Grip Gem to Strong

Post by TomaHawk »

rf67pccb wrote: September 2nd, 2022, 7:03 pm Ok.....that definitely did not come close to working. I am plugging this ball this weekend and am open to any suggestions. My Zenith pearl at 75x2.5x40 works ok, but I was looking for only a smidge more carry power. Suggestions for the Gem even drastic high sums and shorter pin if needed.

Eric, et al please help I am totally open at this point. Our wonderful house shot is less that 19 ml with no 2-2 loads if that helps

Also, would a pin on PAP or a 6.75 pin totally defeat the idea of purchasing this ball???? Maybe I should just sell it????????

THANKS!!!!!!
Seeing as how the Gem is such a strong ball, even in a polished state, did you try throwing it with a softer release?
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Re: Roto Grip Gem to Strong

Post by rf67pccb »

Tried many releases and surfaces. No good.

Eric I am thinking very short or very long pin. Suggestions on layouts to try????

HELP!!!!!!!!!!!!!!!!!
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Re: Roto Grip Gem to Strong

Post by TomaHawk »

Hopefully, Eric can help. The Gem is a great ball.
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Re: Roto Grip Gem to Strong

Post by EricHartwell »

rf67pccb wrote: August 30th, 2022, 10:33 pm I added a Gem to my arsenal to complement my Zenith Pearl. Apparently drilling a match at 75x2.5x40 to my Zenith was likely a mistake. I find that despite release changes it sets up to early (rollout???) The house condition is very dry outside (No 2 to 2 loads) 40 feet medium amount of current conditioner.

I have done everything at this point short of the very high shine, which I will try this Friday.

If that fails, could I dull it up and move right and hope? Or should I plug and go with say 90x1.75x40???

Any ideas out there????
My first thought...
This is a perfect opportunity to use a P1 balance hole.
I hate the fact that we cannot use balance holes anymore.

I had a similar situation with a Black Widow Pearl I was trying to fit in an arsenal.
In fact it was the reason I sought out BowlingChat.
Long story short It took an 1-1/8" P1 and it became the go to ball it was supposed to be.

With that said there is an option to drill the ring finger 4" deep.
This is best viable if you use finger grips.
It will reduce flare and lessen the post drill VAL angle, shorter hook phase.
Its a cheap way to try and make it work.

I am not that confident you will get enough reduction to make it complimentary to the Zenith.
I think you need the core to resist hooking up too early.
Your thought of 90-1.75-40 is probably your best option.
I'm not a big fan of re-drills so I found myself analyzing how this re-drill will be affected.
The old thumb hole shouldn't be in your track.
It will also help keep the PSA closer to its marked location.
As I have found that plug material isn't as dense as the core material removed in the original drilling.
The old finger holes will be in between the new fingers and the Pin.
This will, if any core material was removed, help push the Low Rg away from the fingers actually lessening the VAL angle post drill.
So in this case I would consider the re-drill.
Eric Hartwell

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Re: Roto Grip Gem to Strong

Post by rf67pccb »

Thanks Eric

I will redrill this week and give feedback. I have had P1 experience and was thinking the same thing. Oh well!
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rf67pccb
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Re: Roto Grip Gem to Strong

Post by rf67pccb »

I did the redrill at 90x1.75x40 and ultimately added a light polish. Ball looks really good with excellent hit and practice session went really well 3 games 184-216-267. Will throw some more games tomorrow and feel optimistic that the change was correct. Thanks Eric et al
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rf67pccb
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Re: Roto Grip Gem to Strong

Post by rf67pccb »

Ok here is some more info. The light polish plan did not work possibly due to who was bowling on the pair. Way too much over under reaction. I decided that it might be a good idea to go the other way and add surface to smooth out the reaction.

Remember the pattern is less than 20 mils and my speed off hand is +/- 15 mph. 500 grit by hand scores 224-216-232 with two opens. I am encouraged but sure wish the p1 balance hole was an option. This is lower scoring corner pin center overall.

If I had this to do over I would certainly up the total angles for sure. Possibly 110x60.

Thanks Eric
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Re: Roto Grip Gem to Strong

Post by TonyPR »

Great bowling, if it worked I would not change a thing. Like said earlier, if you want the effects of a P1 drill them fingers deep, if you don’t like it you can always plug them back to the original depth.
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rf67pccb
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Re: Roto Grip Gem to Strong

Post by rf67pccb »

After trial and error and the right night I got the Gem at 90x1.75x40 surface at 500 and then 2000 to work. Still a bit strong and would like to purchase the Exotic Gem and would like to drill it slightly weaker but keep the pop the solid Gem gives me at this hard to carry center. The shape is pretty good but it is a lot of work to stay in the correct part of the lane in order to carry, so would the Pearl version surfaced the same need a slightly tweaked layout?

Eric et al any feedback would be great.

Thanks
Rorey Faiola
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Re: Roto Grip Gem to Strong

Post by EricHartwell »

Quoted from Storm's website...
"Defiant LRG Core (our fastest revving asymmetrical core) & MicroTrax Pearl Coverstock (our earliest and most aggressive pearl cover we currently offer on any ball),"

Good Luck

You are trying to make a Very Strong ball weaker.
Buying a weaker ball and put a stronger layout on it would be a better idea.
Eric Hartwell

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rf67pccb
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Re: Roto Grip Gem to Strong

Post by rf67pccb »

I understand this info. However, I am bowling on extremely low volume and extremely hard to carry center. Less than 18 mils with no averages over 220 in today's scoring environment. With higher viscosity conditioner and dead sideboards bowlers that only care about average go somewhere else. The Gem works ok and sometimes I can throw a Crux drilled 70x3x40 and play a rollout. Obviously carry is marginal. I just thought the pearl version might be workable. I enjoy the challenge generally.
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Re: Roto Grip Gem to Strong

Post by EricHartwell »

I used to be able to throw a ball as hard as I can for 3 games.
Today it's not an option. I not going to challenge myself That much.

My thought process these days...

Play a weaker ball. Roll it, don't spin it. Hit the 17-1/2 board at the pocket.

A realization in my game that I've recently re-discovered.
I can swing the lane and play with the big boys.
But...
I score better, a lot better, when I can keep my concentration on getting the ball to actually roll
when it hits the pocket rather than throw the big hook to hit it.
Eric Hartwell

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