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Author Topic: Help me find where the CG marker is on this ball  (Read 9453 times)

BenLeong

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Help me find where the CG marker is on this ball
« on: October 19, 2013, 07:15:02 PM »
So, I just picked up a Columbia 300 Benchmark Traction LE. I have the original Columbia 300 Benchmark, too, and the CG is designated with a small dot in the center of the brand logo... a hard thing to find and discern from a blemish. But with the Traction LE one that came in the mail, I don't see anything... not even a blemish. I know I could use a scale and twist and turn over and over until I find where it might be, but, it'd be so much easier if you guys could use your eyes to see what maybe I can't seem to find.

Interestingly, I saw another thread a while back where someone was having a hard time finding the CG on their original Benchmark, too.

Take a look at my attached photo. The box lists the pin to be 3-4". For reference, 3" is at about where the "a" is in "Columbia," and 4" is at about where the "U" is in "U.S.A."
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charlest

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Re: Help me find where the CG marker is on this ball
« Reply #1 on: October 19, 2013, 07:43:26 PM »
Please read this thread that I started. See some of the responses:
http://www.ballreviews.com/columbia-300/cg-location-marker-t298016.0.html

Yours is worse than mine. I have the faintest glimmer of a dot below the "m" in Columbia. Have your pro shop/driller find the CG with a Kaufman (Do-do) scale.
« Last Edit: October 19, 2013, 07:48:10 PM by charlest »
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"None are so blind as those who will not see."

BenLeong

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Re: Help me find where the CG marker is on this ball
« Reply #2 on: October 19, 2013, 08:14:33 PM »
Quote from: charlest on October 19, 2013, 07:43:26 PM
Please read this thread that I started. See some of the responses:
http://www.ballreviews.com/columbia-300/cg-location-marker-t298016.0.html

Yours is worse than mine. I have the faintest glimmer of a dot below the "m" in Columbia. Have your pro shop/driller find the CG with a Kaufman (Do-do) scale.

I checked it out, but it didn't inform me of anything I didn't already know I'm afraid. 

Perhaps the pin marking was made on top of one of the etched logo lines, and that's why I can't see it?
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Matt Fortney

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Re: Help me find where the CG marker is on this ball
« Reply #3 on: October 19, 2013, 08:19:24 PM »
Wow. That's a tough one. Is it maybe within the third horizontal line just barely above and left of the u in USA? That line seems to have a little...bump there.?
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BenLeong

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Re: Help me find where the CG marker is on this ball
« Reply #4 on: October 19, 2013, 08:22:46 PM »
Quote from: Matt Fortney on October 19, 2013, 08:19:24 PM
Wow. That's a tough one. Is it maybe within the third horizontal line just barely above and left of the u in USA? That line seems to have a little...bump there.?

I see what you're referring to, but after close inspection, I'm pretty sure it's just the imperfection of the engraving of that line.  I'll get a closeup pic to show what I mean.
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BenLeong

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Re: Help me find where the CG marker is on this ball
« Reply #5 on: October 19, 2013, 08:30:11 PM »
Here's a close-up:
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Matt Fortney

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Re: Help me find where the CG marker is on this ball
« Reply #6 on: October 19, 2013, 08:49:01 PM »
Yeah I think you're right. Man that's tough. Not the smoothest engraving ever either right!? Lol. I think your ball has 34 cg's marked lol. Spot on the N, spot right under the vertical line in the b, spot on the inside, lower edge of the first 0. I have no idea.
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BenLeong

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Re: Help me find where the CG marker is on this ball
« Reply #7 on: October 19, 2013, 08:57:30 PM »
Quote from: Matt Fortney on October 19, 2013, 08:49:01 PM
Yeah I think you're right. Man that's tough. Not the smoothest engraving ever either right!? Lol. I think your ball has 34 cg's marked lol. Spot on the N, spot right under the vertical line in the b, spot on the inside, lower edge of the first 0. I have no idea.

Yeah, while the ball itself looks absolutely beautiful, the CG marker is really frustrating.

Here's a close-up of the spots you wondered about.  Looking at each, I don't think any of them are it:
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Matt Fortney

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Re: Help me find where the CG marker is on this ball
« Reply #8 on: October 19, 2013, 09:06:06 PM »
Wow you're right. Alright, last guess, I promise. Is it on the horizontal line in the A in USA? Last time, honestly. I say that because that looks closer to a circular shape than just shaky engraving.
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BenLeong

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Re: Help me find where the CG marker is on this ball
« Reply #9 on: October 19, 2013, 09:23:18 PM »
Quote from: Matt Fortney on October 19, 2013, 09:06:06 PM
Wow you're right. Alright, last guess, I promise. Is it on the horizontal line in the A in USA? Last time, honestly. I say that because that looks closer to a circular shape than just shaky engraving.

It's hard to get a close-up picture of that for some reason, but, I don't think it's it. 

My closest guess is the top-left corner of the "N," as it's the deepest.  But it's also not a circular dot... it's a short line that follows the contour of the letter.

Damnit.
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J_Mac

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Re: Help me find where the CG marker is on this ball
« Reply #10 on: October 19, 2013, 09:24:07 PM »
My comment on charlest's thread went without a remark and I still think that you can use the center of the USBC/serial number logo as a reference point.

All you have to do is take a quarter scale and center one end on that logo.  Do this 3 times  at different angles from the logo and mark the spots on the opposite end. 

I'd bet that the CG mark, if it exists, would fall somewhere between those points.

I just did this on a non X-out Pursuit-S with a flexible ruler and it was pretty close.  I think the more precise quarter scale would give much better results.  At least close enough for most layouts...
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BenLeong

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Re: Help me find where the CG marker is on this ball
« Reply #11 on: October 19, 2013, 09:26:17 PM »
Quote from: J_Mac on October 19, 2013, 09:24:07 PM
My comment on charlest's thread went without a remark and I still think that you can use the center of the USBC/serial number logo as a reference point.

All you have to do is take a quarter scale and center one end on that logo.  Do this 3 times  at different angles from the logo and mark the spots on the opposite end. 

I'd bet that the CG mark, if it exists, would fall somewhere between those points.

I just did this on a non X-out Pursuit-S with a flexible ruler and it was pretty close.  I think the more precise quarter scale would give much better results.  At least close enough for most layouts...

I'll give it a shot.

Actually, what I'll do is go grab my other Benchmark that has the CG clearly marked and test your theory first on that as a control.  If it works, I'll try it on the newer Benchmark LE.

I have a Pro Sect so it should be no problem.

I'll post photos... stay tuned.
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J_Mac

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Re: Help me find where the CG marker is on this ball
« Reply #12 on: October 19, 2013, 09:29:40 PM »
How much top weight are you dealing with on this one, or I should really specify... How much top  weight does the manufacturer claim the ball has?
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jhutch769

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Re: Help me find where the CG marker is on this ball
« Reply #13 on: October 19, 2013, 09:39:53 PM »
You can and probably should weigh it on a scale to locate the CG...  Cannot remember the exact process, but I am sure someone on here know is..  YOu end up drawing a box on the ball when weighing the different sides of the ball and finally the X will mark the spot
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BenLeong

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Re: Help me find where the CG marker is on this ball
« Reply #14 on: October 19, 2013, 10:21:10 PM »
Quote from: J_Mac on October 19, 2013, 09:29:40 PM
How much top weight are you dealing with on this one, or I should really specify... How much top  weight does the manufacturer claim the ball has?

2.75oz.  So not a lot, and thus not really a problem, especially if I know the general area of the CG.  But if the label was etched in an erroneous location, I could end up having some trouble after drilling.  Plus, I just like to know which layout I'm putting on each ball.
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