Low RG VS High RG Demo brunswick

[bowl1820]

https://www.youtube.com/watch?v=CSMi-aXsiNE

[RobLV1]

Wow! What a surprise that this is put out by Brunswick. I'll bet you see something different from Storm.

[bowl1820]

Wow! What a surprise that this is put out by Brunswick. I'll bet you see something different from Storm.

Expand upon your comment , Why Wow? So they threw a high and low rg ball.

[RobLV1]

Brunswick is known for "rolly" balls. Storm for "Skid/Flip." A great majority of the shots of the low rg ball were strikes. The high rg ball... not so much.

[bowl1820]

Brunswick is known for "rolly" balls. Storm for "Skid/Flip." A great majority of the shots of the low rg ball were strikes. The high rg ball... not so much.

Given that the low Rg ball had more strikes, just shows it matched up better to whatever condition they had on the lanes.

Since there is no commentary to go with it (I'm guessing this video was used in a post or web site which has the commentary to go with it, but I haven't found it yet ), we don't know what they were demonstrating.

[ChuckR]

My interest is in What determines if a ball is LOW or HIGH RG? What are the cutoff points when Differential is added? How do you calculate this on a Symmetrical ball?
Then there is Coverstock.

[RobLV1]

My interest is in What determines if a ball is LOW or HIGH RG? What are the cutoff points when Differential is added? How do you calculate this on a Symmetrical ball?
Then there is Coverstock.

The RG of a ball is an actual measurement (in inches) of the radius of gyration of the X axis of the core. This is the low rg that is indicated by the manufacturer. Since I know that one of the balls that you use is a Brunswick Mastermind Genius, I must add that Brunswick also lists the high rg in its specs. The high rg is the measurement in inches of the Y axis of the core. It is irrelevant as it is easily determined by adding the differential to the low rg. Another way of stating this is to say that the differential is the difference between the high rg and the low rg. It is easy to get confused, until you realize that when we talk about the rg, we are always talking about the low rg. When a ball has a low rg that is under 2.50, it is said to be a low rg ball (low, low rg). When a ball has a low rg that is between 2.51 and 2.54, it is said to have a medium rg (medium, low rg). Finally, when a ball has a low rg that is 2.55 or higher, it is said to have a high rg (high, low rg). Have I confused you enough yet?

[bowl1820]

Check out my online bowling notes blog for some extra info about RG's

http://www.bowlingboards.com/entries/534-Online-Bowling-Notes

also read

Core Properties Written By: Nick Siefers

http://usbcongress.http.internapcdn.net/usbcongress/bowl/equipandspecs/pdfs/articles/CoreProperties042207.pdf


you can see the rg being measured here:

http://www.youtube.com/watch?v=J2wKCSRw3WA

[ChuckR]

The RG of a ball is an actual measurement (in inches) of the radius of gyration of the X axis of the core. This is the low rg that is indicated by the manufacturer. Since I know that one of the balls that you use is a Brunswick Mastermind Genius, I must add that Brunswick also lists the high rg in its specs. The high rg is the measurement in inches of the Y axis of the core. It is irrelevant as it is easily determined by adding the differential to the low rg. Another way of stating this is to say that the differential is the difference between the high rg and the low rg. It is easy to get confused, until you realize that when we talk about the rg, we are always talking about the low rg. When a ball has a low rg that is under 2.50, it is said to be a low rg ball (low, low rg). When a ball has a low rg that is between 2.51 and 2.54, it is said to have a medium rg (medium, low rg). Finally, when a ball has a low rg that is 2.55 or higher, it is said to have a high rg (high, low rg). Have I confused you enough yet?

Thanks Rob. I will now get a cold beer.

[John Anderson]

The simple explanation of RG is this: Low RG = more mass at center of ball. High RG = more mass towards the coverstock. Low RG = earlier roll. High RG = later roll. If the RG is too low, you will get the ball to roll instead of skidding to the proper break point. If it's too high, you won't ever get your ball to hook and it will slide straight past what should be the break point.

What RG you actually want is determined by the amount of oil on the lanes. If it's heavy oil, you want lower RG. If it's extremely light oil, medium or high RG is perfectly okay and might actually be better suited. Low RG is usually associated with balls that give a big hook.