DRAW SHOT Effects Myth Buster … a Slow Motion Video Study

[dr_dave]

FYI, I just posted a new video that shows and discusses results from a careful slow-motion-video study debunking many common myths concerning draw shot effectiveness related to stroke acceleration and timing, and tip contact time. Check it out:

Contents:
0:00 - Intro
0:53 - Background
3:09 - Study Procedure
5:30 - Study Results
6:09 - Acceleration Effects
7:53 - Speed Effects
8:59 - Wrap Up

As always, I look forward to your feedback, comments, questions, complaints, and requests.

Enjoy!

 

[hurricane145]

Thank you Dr. Dave.
It incidentally comes to mind that you have a very good voice for commentary. You are clear and articulate, no stumbling over words or repeating what you said earlier, no "ummm" or "uhhh". It is like you were a professional commentator at one time.
It is not always the content but how it is presented that is important. You get high marks in both categories.

 

[dr_dave]

Thank you Dr. Dave.
It incidentally comes to mind that you have a very good voice for commentary. You are clear and articulate, no stumbling over words or repeating what you said earlier, no "ummm" or "uhhh". It is like you were a professional commentator at one time.

Thanks. It probably helps that I was a university professor for 30 years!

It is not always the content but how it is presented that is important. You get high marks in both categories.

Thanks again. I appreciate the positive feedback. This video was fun to create, especially with Pubo doing all the hard work.

 

[alphadog]

So I watched the video and..... what effect does a elevated cue have ? Think nip draw or to the extreme "masse"

 

[dr_dave]

So I watched the video and..... what effect does a elevated cue have ? Think nip draw or to the extreme "masse"

See the videos, info, and links here:

draw shot cue elevation effects​

 

[tomatoshooter]

Thanks for the video. On the tip contact time plots, I noticed that there was a lot of variation in contact time near the middle of the graph. Do you know what caused this?

 

[dr_dave]

Thanks for the video.

You're welcome.

On the tip contact time plots, I noticed that there was a lot of variation in contact time near the middle of the graph. Do you know what caused this?

This is probably a better question for @Pubo to answer.

I also thought that was more variation than should be expected, but the overall trend is still clear.

 

[sjm]

Nice job, Dave. The subject was well analyzed and well presented.

 

[dr_dave]

Nice job, Dave. The subject was well analyzed and well presented.

Thank you. I'm glad you thought so.

 

[straightline]

What weight was the cue?

 

[dr_dave]

What weight was the cue?

I would guess close to 19oz, but @Pubo can confirm. Although, it doesn't really matter much (within a typical range) per the info and links here:

draw shot cue weight effects​

 

[straightline]

I would guess close to 19oz, but @Pubo can confirm. Although, it doesn't really matter much (within a typical range) per the info and links here:

draw shot cue weight effects​

Haven't seen that article. Going now. Thanks.

 

[dr_dave]

Haven't seen that article. Going now. Thanks.

If you visit and read through the info and watch videos at all the links, you will be busy for a while, so grab the popcorn.

 

[straightline]

Ok. One argument. Cue weight does affect the shooters ability to move the cue so in that regard can't be dismissed. (?)

 

[dr_dave]

Ok. One argument. Cue weight does affect the shooters ability to move the cue so in that regard can't be dismissed. (?)

See the info and links at the following page, which addresses this topic in detail:

optimal cue weight resource page​

 

[Blue]

Nice video as usual Dr Dave

Question, does a mushroomed tip affect the backspin?

 

[pwd72s]

So, it's all about contact point on the cue ball and cue speed at impact. Same as a hunting rifle bullet...assuming bullet weight is the same, the faster travelling bullet delivers more foot pounds of energy at impact....as the faster cue speed results in more draw distance. Got it..and thanks!

 

[straightline]

See the info and links at the following page, which addresses this topic in detail:

optimal cue weight resource page​

Got it. Not pertinent to the article but can be the major factor in one's ability to produce the shot. I think the vets claiming feel and different (fernt lol) strokes require the idiosyncrasies to organize their arsenal and keep things ready to fire.

 

[dr_dave]

Nice video as usual Dr Dave

Thank you.

Question, does a mushroomed tip affect the backspin?

... only if the shaft diameter and/or the mushrooming is so large and/or the tip is flat enough that the table surface prevents you from getting the tip contact point low enough (although, even that can be defeated with a little cue elevation). See the illustrations here:

cue tip size and shape effects​

 

[dr_dave]

So, it's all about contact point on the cue ball and cue speed at impact.

Yep.

Same as a hunting rifle bullet...assuming bullet weight is the same, the faster travelling bullet delivers more foot pounds of energy at impact....as the faster cue speed results in more draw distance. Got it..and thanks!

You're welcome.