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General Category => Drilling & Layouts => Topic started by: LuckyLefty on November 17, 2012, 10:12:37 AM

Title: What is the idea of this drilling, cg near thumb
Post by: LuckyLefty on November 17, 2012, 10:12:37 AM
I have seen this recently in videos and also a high speed bowler in our house frequently goes with drillings like in this video.

Second mark 17 seconds...and 1:19
http://www.youtube.com/watch?v=pPcnQCWpoFk.

My friend who is tearing it up in our center talks about the smoothness of this drilling.

I wonder, is it suitable for average speed bowlers?  Do you need high speed or more oil volume for the average speed bowler? 

Also, I assume that one must have a lower topweight ball.  Drill a deeper thumbhole?

Experts?

Luckylefty
PS I saw this video also and it seemed to make for a very smooth move!
http://www.youtube.com/watch?v=bpyVMDOa8Hs
24 seconds in
Title: Re: What is the idea of this drilling, cg near thumb
Post by: Rightycomplex on November 17, 2012, 11:09:20 AM
Hey Lefty,

The layout is going to smooth out the overall ball motion and get the ball into a roll earlier depending on the players stats. The CG just keeps him from having to put a hole in the ball and can pull the after drill PSA into a stronger position if a hole is needed. Yes you will need a low top weight to avoid a hole or drill the thumb deeper/ double thumb the hole and anyone can use it.
Title: Re: What is the idea of this drilling, cg near thumb
Post by: LuckyLefty on November 17, 2012, 11:55:37 AM
Righty,

Thanks so much.

A few questions.

About where does the PSA end up without a hole?

Double thumbing it moves the PSA to about where? 

Or in what direction?

Regards,

Luckylefty
Title: Re: What is the idea of this drilling, cg near thumb
Post by: tdub36tjt on November 17, 2012, 12:04:18 PM
Any weight hole in a symmetrical ball that disturbs the core will move the psa closer to the weight hole. How far depends on how much of the core is taken out.....generally speaking, a double thumb hole would be used to make the ball transition faster down lane. Where as a hole down on the val would be a good idea if you are looking to pull the psa closer to your pap.
Title: Re: What is the idea of this drilling, cg near thumb
Post by: tdub36tjt on November 17, 2012, 12:08:11 PM
The position of the cg on a symmetrical ball is really only going to be relevant in how deep finger and thumb holes will be drilled which will disturb the core more and as to where u can place an x hole to change core dynamics. I still don't believe anyone could possibly see a difference in ball reaction based on the cg being placed in a different location unless it caused them to take more or less of the core out of the ball
Title: Re: What is the idea of this drilling, cg near thumb
Post by: Rightycomplex on November 17, 2012, 01:12:52 PM
+1, Tdub. CG will not matter as far as reaction, only in weight hole and placement. Position of the hole will can affect flare, thus POTENTIALLY changing reaction.

@Lefty

PSA's will normally end up around the thumb because it is the biggest hole with the most weight being taken out and, as Tdub mentioned, it disturbs more of the core. However a Determinator would be required to know exact location. There are a lot of variables that contribute to the PSA position, from size and shape of the core to the size and and depth of the holes, both gripping and weight holes. Generally, a hole 2" down the midline on the VAL will be the safest way to "maximize" the potential of the ball and pull the PSA closer to the PAP, pulling the flare rings further apart, thus creating an earlier transition from skid-hook because more of the ball is in contact with the lane. Meanwhile, the vice-versa will create a later transition from skid-hook and push the flare rings together and creating a POTENTIALLY later reaction.
Title: Re: What is the idea of this drilling, cg near thumb
Post by: Rightycomplex on November 17, 2012, 01:25:45 PM
@ Lefty,

I think you're getting a bit too wrapped up in the layout of the ball. In both vids, the balls still performed as adverised and while the PSA is important to the driller, these were still symmetrical balls and the surface, pin placement, and YOU will be more important than the PSA. Its all about matchups, matching the right ball and surface with the right condition. Too strong of a ball with surface and a strong pin placement will transition too quickly and burn up and vice versa. Unless you're targeting a weight hole for a specific reaction or unless the ball needs a hole for statics, its nothing you cant do with surface. Ball's going too long, low grit, too early higher grit, still too early, (Mo's gonna kill me, lol!) add polish.
Title: Re: What is the idea of this drilling, cg near thumb
Post by: kidlost2000 on November 17, 2012, 06:06:10 PM
The smooth reaction is due to the ball cover, manufactures ball intention, and pin placement not the cg. Typically on pin up drillings the psa ends up being the thumb hole. On pin down drillings you can draw a line from the pin through the thumb 6 3/4" to get a very close location of the balls psa within 1/2" either side of the line.

The psa/high rg axis will shift towards holes, the low rg axis shifts away from holes.

Typically when you have the cg down near the thumb or just on the positive side of it, it gives you the option of adding a p3 or p4 x-hole.
Title: Re: What is the idea of this drilling, cg near thumb
Post by: LuckyLefty on November 17, 2012, 09:06:46 PM
I have never had a ball with the cg down like that.

I found the roll of the shatter interesting with that setup, very even.  Could have been the pin position.

I appreciate all the comments.

Righty, you mentioned the converse on the weighthole but I was unclear what you meant that converse was?

Thanks all!

Regards,

Luckylefty
Title: Re: What is the idea of this drilling, cg near thumb
Post by: Rightycomplex on November 17, 2012, 09:21:35 PM
 @lefty,

Im assuming you are meaning when I referring to the vice versa. 2" up the mid on the VAL will significantly reduce flare, thus making the transition later. Kid also made great points. If you like the reaction try the layout as in the vid to see if you like it. Then all you would have to do is put your stats on the ball to get the dual angles. Then go from there.
Title: Re: What is the idea of this drilling, cg near thumb
Post by: tdub36tjt on November 17, 2012, 09:34:33 PM
The even reaction is a combination of core and layout combo. It looks so even cause it is transitioning really slow. This is the symmetrical core and the slower transitioning pin position. I often use the same layout to help bowlers go a little straighter. The thing is knowing when to use it and who to use it for. Some bowlers it will cover a ridiculous amount of boards and some it will never read the lane so you have to know when to use it....
Title: Re: What is the idea of this drilling, cg near thumb
Post by: LuckyLefty on November 18, 2012, 08:59:20 AM
Righty,

Great help!  Thanks for explaining.  I appreciate all the other comments 

Thanks.

Regards,

Luckylefty
Title: Re: What is the idea of this drilling, cg near thumb
Post by: scotts33 on November 18, 2012, 10:35:11 AM
You can see where the PSA is on this ball should give you an idea why it is so smooth.  Weak control ball great for broken down shots moving back into the dirt.  90* (PAP to pin to PSA)x5"x65*  No x hole.

BTW....being that the Rising Star is a relatively strong ball for it's price point I have seen Britton drill some balls like this for control.   I had a Nomad Solid drilled the same way and loved it.  NS another strong RG ball. 

(https://www.ballreviews.com/proxy.php?request=http%3A%2F%2Fi132.photobucket.com%2Falbums%2Fq29%2Fscotts33%2FBowling%2520Equipment%2FOgreSS.jpg&hash=9cac8c5fac1cba1eb7bdd34c6e670b8d2709eff1)

Title: Re: What is the idea of this drilling, cg near thumb
Post by: Rightycomplex on November 18, 2012, 10:47:50 AM
Great job Scott, wish we had a determinator around here. It really helps answer questions.