![]() If the shafts actually deflected that much, we would all look like Bustamante aiming past the ball even with low deflection, the end chart shows 2 inches for a 12.4 Revo, same shaft I used for a long time, that means I would be aiming to totally miss the ball when using side to have it come back 2 inches the other way, I have never done that, aim pretty much full on. Not sure I see how you got over an inch of deflection with the shafts, I played with a Revo for months, and there is no way I was compensating more than 1/4th of an inch on even table length spin shots. Regardless, tip hardness does not seem to affect CB deflection very much. But a soft tip also deforms more sideways during the hit, possibly resulting in less shaft motion sideways, which would reduce CB deflection. Although, a soft tip that is dense and heavy would definitely create more CB deflection. This makes sense because the harder tips are generally denser and heavier, creating more “endmass.” The shorter contact time seems to be less of a factor than the added weight. Among the wide range of tips tested in the video, the harder tips did result in slightly more squirt. Another set of more careful experiments documented in the Cue and Tip Testing for Cue Ball Deflection (Squirt) video and “ Cue Tip Squirt Testing” (BD, June, 2014) seem to imply that tip type, hardness, and height have very little effect on shaft squirt. ![]() ![]() In general, if the contact time is longer (as is the case with a softer tip), the effective endmass and resulting squirt should be larger. A softer tip did seem to create slightly more squirt, but the experiment was not very well controlled (see the article for more info). “ Return of the squirt robot” (BD, August, 2008) documents an experiment related to the effects of tip hardness on squirt. There are many factors related to tip hardness that could influence squirt (CB deflection), including: tip density/weight, tip efficiency, contact time, and effective endmass. In case you don't want to click on the link and scroll, here's the pertinent section: I have done some tests, and the results were "mixed." See the links in the section at the resource page mentioned above.
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