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  1. irspow

    Increasing stroke speed?

    My goal isn’t a precise speed as much as a generalized desire for more cue speed for when it is needed. I can’t imagine any shot needing more speed than drawing a cue ball the length of the table when OB and CB start 8 diamonds apart. What I was wondering though is what might be the best...
  2. irspow

    Increasing stroke speed?

    I am just curious about what people think is an effective method or type of practice to increase controllable stroke speed. I’ve tried progressive practice making longer and longer backstrokes. However, I have hit a wall where a full length backstroke only produces about 12-13mph cue ball speed...
  3. irspow

    Breaking News -- Jeremy Jones settles all aiming arguments!!!

    I know what I do shouldn’t work, but it does for me. I set up straight along my shot line. Then I move my bridge hand to left/right to apply the amount of sidespin I want. (Front hand english?) I must be making subconcious compensations, but this is what gives me most consistent results...
  4. irspow

    Sensitivity of Power Draw Shots - Physics or Mechanics?

    That’s pretty neat. 😃👍 Were your stop shots made with max draw contact point on cueball? If you use the stroke speed needed with slight draw (conventional stop shot) that is too fast. A stop shot performed with max draw contact point will be slower than a typical stop shot. Maybe that is why...
  5. irspow

    Sensitivity of Power Draw Shots - Physics or Mechanics?

    Awesome! I kind of assumed that I wasn’t a pioneer here. 😂
  6. irspow

    Sensitivity of Power Draw Shots - Physics or Mechanics?

    The ‘system’ works for me. But it isn’t a twice the stop system. Rather it defines the stroke power for total diamond travel of cue ball. Once you know for example the stroke needed to stop at say 8 diamonds. Any total combination of separation of balls and cue draw that adds up to 8 works...
  7. irspow

    Sensitivity of Power Draw Shots - Physics or Mechanics?

    This may or may not be applicable, but mere mortals tend to try to hit too hard when trying to get a lot of draw. Obviously the more offset the more backspin you get for a given stroke speed. Let’s ignore for this discussion the power draw which you want your tip to be slightly higher than for...
  8. irspow

    Dr. Dave's first YouTube Short

    The DAM system is still the best aiming system ever devised! It makes all other aiming systems obsolete. 😂
  9. irspow

    Flat tip vs. Radius

    From other calculations I’ve done, generally speaking, you can align the inside edge of your shaft at a quarter of the cueball. Any more than that a you most likely will scratch. You essentially will be using the shoulder of your tip. And if you are going to be hitting firm, you want to aim the...
  10. irspow

    Flat tip vs. Radius

    Miscue limit contact point is .6R. ‘Extreme english’ is generally regarded as .5R contact point. (It is why playing the ‘miscue limit’ of a .5R contact point leaves a little room for error.) That’s why the best players can hit .5R ‘limit’ and still rarely actually miscue.
  11. irspow

    Flat tip vs. Radius

    The contact point cannot be at the cueball edge. Miscue will occur at .6R Yes a larger tip radius is more ‘forgiving’ and a smaller r is more precise (less forgiving). However it is harder, you need more offset, to get spin with a large r.
  12. irspow

    Flat tip vs. Radius

    I’ve been doing some research and doing so I’ve found a formula that applies to this discussion. C=(RA)/(R+r) C = contact point on cueball R = radius of cueball A = aim distance from center cueball r = radius of tip curvature Notice. The smaller the tip radius, the closer you will hit to your...
  13. irspow

    Funny pic/gif thread...

  14. irspow

    Split the Difference vs CTE

    I gave a free link that anyone can watch on youtube. I believe the reason that CTE guys don’t just explain it is because there are a LOT of details in the system. That’s why the link to a CTE guru guy has 33 videos!!! just to describe all the details. I tried watching them but my eyes just glaze...
  15. irspow

    Split the Difference vs CTE

    I wasn’t sure if anyone wanted a (semi) full explanation of CTE. That’s why I posted a link to like 33 videos trying to explain it.
  16. irspow

    Funny pic/gif thread...

  17. irspow

    Split the Difference vs CTE

    If you want to watch an in depth series on youtube about CTE go here. The video in this thread talking about ‘split the difference’ has nothing to do with CTE. https://m.youtube.com/playlist?list=PLGctCHADWj3REGj9G78FH98Nn84tXB15z If you can understand all of it CTE might be helpful for you...
  18. irspow

    Is there a tip manufactured like this?

    That 60 degree arc is based upon the accepted idea that contact at a quarter cue ball will be used for maximum spin. However, theoretically the limit is .6 radius offset from center. Then the range becomes not 60 degree range for the tip but near 78 degree range. Spin is not even what I was...
  19. irspow

    Is there a tip manufactured like this?

    I wanted small radius tips. Going from a dime down all the way until the tip radius was the same as the shaft radius. Essentially the smallest tip radius would be a hemisphere. That would require a thickness more than the radius, ideally maybe the diameter and thickness being equal. (So I...
  20. irspow

    Is there a tip manufactured like this?

    I wanted to buy some tips for some experimentation. Are there any manufactured tips that are noticeably taller/thicker than their radius? I know it is silly but I wanted to try making very small radius tips and everything I’ve seen available wouldn’t really be thick enough.
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