The scale drawing below shows an overhead view of three cues hitting three cue balls at different offsets - cue moved 1/4", 1/2" and 3/4" to the left. Just for fun, it also compares where nickel and dime shaped tips contact the CB at those offsets, assuming the cue's centerline is offset the same amount.
I notice two interesting things:
1. These three very common tip offsets - often called 1, 2 & 3 (or 1/2, 1 and 1 1/2) "tips" - produce almost exactly 1/3, 2/3 and 3/3 of maximum sidespin (the red lines on the CB), which correspond to 1, 2 and 3 diamonds of cross-table angle change. I just find this correspondence remarkably convenient.
2. The difference in contact points for nickel and dime shaped tips (shown by the circles at the cues' tips and the lines connecting their centers with the CB's center) is almost nonexistent: 1/128" at 1/3 max sidespin, 1/64" at 2/3 max sidespin and less than 1/32" at maximum sidespin (true for nickel and dime tips of any width). So how true is it really that a dime shaped tip can produce noticeably more spin for the same tip offset?
Doing my part to use up these damned pixels...
pj
chgo
View attachment 53737
I notice two interesting things:
1. These three very common tip offsets - often called 1, 2 & 3 (or 1/2, 1 and 1 1/2) "tips" - produce almost exactly 1/3, 2/3 and 3/3 of maximum sidespin (the red lines on the CB), which correspond to 1, 2 and 3 diamonds of cross-table angle change. I just find this correspondence remarkably convenient.
2. The difference in contact points for nickel and dime shaped tips (shown by the circles at the cues' tips and the lines connecting their centers with the CB's center) is almost nonexistent: 1/128" at 1/3 max sidespin, 1/64" at 2/3 max sidespin and less than 1/32" at maximum sidespin (true for nickel and dime tips of any width). So how true is it really that a dime shaped tip can produce noticeably more spin for the same tip offset?
Doing my part to use up these damned pixels...
pj
chgo
View attachment 53737
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