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Author Topic: Double thumb requirements- topweight?  (Read 1101 times)

Asura

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Double thumb requirements- topweight?
« on: July 27, 2009, 12:14:30 AM »
Hi guys, just curious, when using this technique is there any other requirement on the part of the ball other than the part about having large pin out 4-5 inches.  What about the topweight? Any specifications about it?

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the pooh

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Re: Double thumb requirements- topweight?
« Reply #1 on: July 27, 2009, 08:46:37 AM »
In my limited experience, higher tops require larger , deeper x-holes(which increase the differential more = more strength. Lower tops need smaller or no x-hole, not a good thing. Also, the longer the pin, the bigger the x-hole(ala pro pin balls are good for double thumb drilling).Lastly, if you use a changeable thumb system(IT, Switchgrip,etc) You may need more top weight and/or pin distance since they take so much thumb and top out.
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lefty50

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Re: Double thumb requirements- topweight?
« Reply #2 on: July 28, 2009, 10:43:49 PM »
Can I ask a follow-up to this? I have a ball coming that is 4-5 pin, 3.25 top, and I use IT. Sounds to me like a good time to try out a double thumb drilling... Yes?
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the pooh

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Re: Double thumb requirements- topweight?
« Reply #3 on: July 29, 2009, 12:46:29 AM »
Lefty, that is the perfect candidate! Good luck,I really love the way mine rolls and will be drilling more.
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