Not really better or worse with any of them, just have to match what you want the ball to do with what you are seeing.

RG= radius of gyration. The lower (2.45) rg, the quicker the ball tries to pick up a roll vs a high (2.60) rg....

Differential= amount of track flare. The lower the diff(.020), the less track flare, and generally, the less the ball hooks as well. If you look at MOST big hooking heavy oil balls out, the diff is in at least .040 up to .060 (max allowed now)

Spin time is how quick the core reaches its preferred spin axis....the quicker the spin time, the stronger the core and sooner the ball will try to pick up a roll.

Clint
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Clint Daley-Owner
Lets Go Bowling Daley
Inside Hunt Club Lanes
Salem, Ohio 44460
TRACK ADVISORY PRO SHOP STAFF

http://www.trackbowling.com/

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