Author Topic: CG out of line question (Read 6668 times)

waterboy276 · « **on:** March 03, 2018, 10:31:21 AM »

Will the CG being very out of line cause any negative effects on the ball motion? I feel like someone said it could cause the ball to roll funny..

I ask because I want to try a ball with a small drill angle (similar to the sym layout for the alias) and I can find other balls with the CG out of line far enough to use that layout, but I don't know if there will be negative effects from a CG the far out of line.

I'm pretty sure this has been asked on here before but I can't find the old thread.

lefty50 · « **Reply #1 on:** March 03, 2018, 11:46:15 AM »

I should wait for one of the experts, but I believe current thinking is that it will potentially limit your drilling options, particularly if you do not want a weight hole or plan it in a particular spot. Otherwise, it's back to the old cgnomaddah threads, where the subject has been lovingly discussed ad infinitum.

Steven · « **Reply #2 on:** March 03, 2018, 12:03:39 PM »

On asymmetric balls, I've had CG's all over the place. What's most important factor is Pin/MB location with respect to drilling. The CG location will dictate the need for a weight hole or not, but that's about it.

I'd be more concerned with pin to CG distance, which will influence drilling options. A short pin will definitely reduce your effective choices.

waterboy276 · « **Reply #3 on:** March 03, 2018, 12:09:40 PM »

In this case, the pin-cg length and distance the cg is offset will both enable the layout I want to try. I want to try something similar to the symmetric layout shown on the Track Alias, which involves using a very low, possibly negative drill angle.

I am currently looking at a Logix on ebay with a 4 ish inch pin offset a good distance to the left, so a small drill angle will put the cg in my palm, which is exactly what I'm looking for.

My questing is more along the lines of, will the way the core is offset producing that out of line cg have negative effects on the balls motion? Or am I quite possibly over thinking it?

Gatekeeper · « **Reply #4 on:** March 04, 2018, 10:48:23 AM »

I think you're just overthinking it. I try to buy asymmetrics like this all the time. They roll just fine, and you can use low drill angles while keeping the CG close to center.

charlest · « **Reply #5 on:** March 04, 2018, 11:26:54 AM »

Quote from: waterboy276 on March 03, 2018, 12:09:40 PM

I am currently looking at a Logix on ebay with a 4 ish inch pin offset a good distance to the left, so a small drill angle will put the cg in my palm, which is exactly what I'm looking for.

My questing is more along the lines of, will the way the core is offset producing that out of line cg have negative effects on the balls motion? Or am I quite possibly over thinking it?

As long as the desired pin and PSA/MB location does not cause the CG to be located such that you need a P1 or P3 weight hole, any variation of the CG from the line of the pin to the PSA/MB will not have any effect on the ball motion, as far as I have learned.

Yes, this concern is way over thinking it. Drilling asymmetrics is hard enough to do properly without adding factors that do not affect the ball reaction. Relax; drill the ball. Have fun.

Steven · « **Reply #6 on:** March 04, 2018, 03:59:17 PM »

Quote from: charlest on March 04, 2018, 11:26:54 AM

Quote from: waterboy276 on March 03, 2018, 12:09:40 PM

I am currently looking at a Logix on ebay with a 4 ish inch pin offset a good distance to the left, so a small drill angle will put the cg in my palm, which is exactly what I'm looking for.

My questing is more along the lines of, will the way the core is offset producing that out of line cg have negative effects on the balls motion? Or am I quite possibly over thinking it?

As long as the desired pin and PSA/MB location does not cause the CG to be located such that you need a P1 or P3 weight hole, any variation of the CG from the line of the pin to the PSA/MB will not have any effect on the ball motion, as far as I have learned.

Yes, this concern is way over thinking it. Drilling asymmetrics is hard enough to do properly without adding factors that do not affect the ball reaction. Relax; drill the ball. Have fun.

I mostly agree with this. Just from personal experience, outside of needing a P1 or P3, I haven't seen any real differences. I currently have 2 Radical Guru Limited's drill almost identical. One has the pin/cg/mb in line, and I have a small balance hole on my PAP. The second has the CG shifted in towards the vertical grip line, and required no hole. They react almost identically.

I also have a Storm Sure Lock with the CG shifted in towards the vertical grip line, no hole. I don't like the way the ball rolls, but it probably has nothing to do with the shift.

In short, I agree with the others. I wouldn't worry about it.

billdozer · « **Reply #7 on:** March 05, 2018, 05:09:12 AM »

Don't want to ruffle any feathers, but I feel the tends to face up differently.

I order a bunch online, and get alot of cg left and right. I have had better luck with the CG right stuff than left, although they could be my specs. CG left typically bails you out of needing a weight hole which is nice.

It could just a superstitious thing with me, but I have had better rolling balls with pin/cg/MB inline, hate to be that guy. It doesn't stop me from drilling a ball, but like 30 assyms later, I do remember the scoring balls (for me) being "inline.". Just giving my opinion..I'd still drill it the way u intend, my buddy has 2 legions both CG left and LOVES both....have no fears!

My question is this....if the CG is that offset...are you not placing the core in a different position to roll off your hand? Or does it not matter once it's in it's roll...a la "Cgnomaddah"

charlest · « **Reply #8 on:** March 05, 2018, 06:25:28 AM »

Quote from: billdozer on March 05, 2018, 05:09:12 AM

My question is this....if the CG is that offset...are you not placing the core in a different position to roll off your hand? Or does it not matter once it's in it's roll...a la "Cgnomaddah"

It's almost never a question of the CG not mattering; it usually matters very little with symmetric cored balls due to the dynamic imbalance superseding the static imbalance by a large margin. With asymmetric cored balls, the PSA strength makes the CG all but superfluous except for meeting USBC specs for drilled ball. The pin and the MB positions are so much more important than the CG's position by a HUGE margin. Heck, balance holes are much more important than the CG position.

LookingForALeftyWall · « **Reply #9 on:** March 05, 2018, 08:15:56 AM »

As a lefty, I like the CG to be kicked to the left of both the pin and mb. This allows me to fine tune an asymmetric with a weight hole as the CG is in better position to offer that opportunity.

Strapper_Squared · « **Reply #10 on:** March 06, 2018, 01:06:31 AM »

I would caution and recommend weighing the ball out to verify the cg location. I have seen several of these with shifted cg markers, actually be in the wrong location.

S^2

MI 2 AZ · « **Reply #11 on:** March 06, 2018, 01:40:29 AM »

Good info to know. I was afraid to buy some of those with the CG 2-3 inches left because I thought I would end up with too much negative side weight if I wanted to keep the mass bias next to the thumb.

Gatekeeper · « **Reply #12 on:** March 06, 2018, 04:39:20 AM »

Couldn't agree more with Strapper; a couple of months ago I bought a Storm Intense with the CG shifted about 2" to the left. When I checked it on the scale, it was about 3/4" off, so only 1-1/4" shift to the left. Once I realized, I was all set. If I didn't check, I might have needed a balance hole. Not a big deal, but if you have a customer who buys it off eBay like that on purpose, and they might be superstitious about balance holes, now you have some explaining to do!

waterboy276 · « **Reply #13 on:** March 06, 2018, 12:25:45 PM »

It never would have crossed my mind to check the CG location, I guess I've always assumed the markings were accurate. I did go forward with the purchase, should have the ball end of the week. I'm curious now, so I'll definitely ask to have the CG location checked. Doesn't make a difference to me if the ball ends up needing an extra hole, but it might be cool to see how far off the marking is.

Author Topic: CG out of line question (Read 6668 times)

waterboy276

CG out of line question

lefty50

Re: CG out of line question

Steven

Re: CG out of line question

waterboy276

Re: CG out of line question

Gatekeeper

Re: CG out of line question

charlest

Re: CG out of line question

Steven

Re: CG out of line question

billdozer

Re: CG out of line question

charlest

Re: CG out of line question

LookingForALeftyWall

Re: CG out of line question

Strapper_Squared

Re: CG out of line question

MI 2 AZ

Re: CG out of line question

Gatekeeper

Re: CG out of line question

waterboy276

Re: CG out of line question