Rev Rate check

[billf]

So I have been tinkering all summer with stuff and decided to check my rev rate. Obviously I'm disappointed with how low it is but figured I would post this any way so those that don't know how to check can see. The shots are off target because I was trying to stay out of the way of the camera. Scoring wasn't what I was there for so who cares. I did hit the camera once that's why the angle changed during filming. I used my Natural Pearl and Reckless this session.
http://youtu.be/ykpkz_EI7L4

[bowl1820]

"This video is Private" must be bowling porn!

[martinezsam2495]

Yup same problem as the other guy who posted,
haha the pin action was just too nasty, for public view.

[billf]

I think I have it corrected, sorry. Not really sure why I hit private.

[GeorgiaStroker]

I really love the consistency of synthetic lanes but dang I miss the sound of wood.

[eugene02]

so where do you paste the white tape again? i shall video mine down and let you see it..

[billf]

From just above your finger to your PAP. Close is good enough as long as you can see it rotate.

[billf]

I really love the consistency of synthetic lanes but dang I miss the sound of wood.

I never realized how messed up and dirty the gutters were until I watched this video. Our poor lane topography I've always known about. They are getting resurfaced again in August. The only issue with that is the past six years they have said it was the last cut they could do. I bet if they checked, the USBC would not sanction any bowling at my home center. This video was on lane 6. Lanes 1-4 are actually 40 years older.

[GeorgiaStroker]

I grew up bowling on wood lanes that were probably 40 years old. The center flooded in the early 90's and the went to synthetic. But I miss the sound that wood lanes have. My son is always impressed that I can listen to the pin setter and tell if it's AMF or Brunswick without looking.

[martinezsam2495]

Tape next to my finger holes?

[bowl1820]

Tape next to my finger holes?

http://www.bowlspot.com/images/coaching/strongRelease.png

[panbanger]

How do you use this video to calculate your rev rate? Do you count the revolutions then multiply it by something? I've seen before on the web people mention how many revolutions per minute they get on their ball, but I figured they had some computer program at a pro training center tell them this.

Also, are you using a cell phone to video this? I've been looking for a cellphone tripod that I could use to video my bowling but they're pretty hard to find, and pricey once you do find one. I may just lay mine on it's side at ground level, which is what it looks like you may have done here.

[bowl1820]

There are several ways to calculate Rev's this is just one.

Measure Rev Rate

Calculating Rev Rate requires a video.

Place Tape from PAP to above fingers.

Make sure the tape is contrasting in color to the ball. This will allow you to easily see the rotations.

Film a few throws

TAKE NOTE of the Frames Per Second you're recording in. Most video cameras are either NTSC-30FPS or PAL-25FPS, but other rates do exist.

On a frame-by-frame player (Quicktime) count the number of times the tape revolves over 10 frames. Be as exact as possible with this calculation.


1/4 rotation over 10 frames is equivalent to 45 RPM, so a minor mistake in reading the video can be large
To minimize error, throw more than one shot, and average your results.
The higher the video quality, and the higher the frame rate, the more exact results you can obtain.


A short duration such as 10 frames is best, as this allows you to remove many effects of the lane such as friction.


You will end up with X Revolutions / 10 Frames

At this point, it's simply conversion factors from high school science class:

I am using 30FPS, as most video cameras in the US will use this *


(x Revs / 10 frames} x (30 Frames / Second) = (revs / Second) (Revs / Second) (60 Seconds / 1 Minute)


Multiply X Revs by 3, (or multiply by 30 and divide by 10) The Multiply your result by 60. It's pretty simple!


For example: If the ball Completes 2 FULL rotations only over 10 frames

2/10 * 30/1 * 60/1 = 360RPM


http://www.youtube.com/watch?v=pkcvF_M1SaU&feature=player_embedded
Not the best video that frame rate (30FPS) is too slow. And that music is ANNOYING.

[bowl1820]

Talk Bowling Episode 18 How to Calculate Your Bowling Ball Speed and Rev Rate


http://www.youtube.com/watch?v=VK94ZtXJa9A

[billf]

I like the FPS method better than the revs from foul line to pin deck with time ball took to get there method. Changing methods brought my rev rate up to over 400 from 360 lol.
I still need to decrease my revs or increase my speed so they match no matter which method I use to calculate it.

[bowl1820]

Well you could average the two to gather.

[billf]

I will worry more about it being accurate when I can get my speed up consistently. Until then I know I'm rev dominant no matter what the calculations say.

[martin]

hmm i doubt black tape will be visible on my brunswick anaconda? guess i need to get some white tape so i can tell my rev rate..

[panbanger]

Excellent instructions, bowl1820! Thank you so much. It's pretty basic once you get a program that can do frames per second, for some reason that just never occured to me :)

[bowl1820]

Excellent instructions, bowl1820! Thank you so much. It's pretty basic once you get a program that can do frames per second, for some reason that just never occured to me :)

I like the simple version best.

Put a tracer tape on the ball from PAP to fingerholes.

Throw the ball down the lane and time how long the ball takes to hit the pins. Example 2.4 seconds.

Then Just play back the video in slo-mo and count the number of revolutions from release to hitting the pins .

Then use this formula: (60/time in seconds) X the # of revolutions = RPM

example:
18 revolutions 2.4 sec.

(60/2.4= 25) X 18 = 450 rpm

or use the Rev Rate Chart and look it up

Find it here:
http://powerhousebowling.com/images/uploads/pdf/Ball_speed_rev_rate_chart.pdf

[backahead]

@Bill: I'm not at the point to know or care what my rev rate is, but that video was hypnotizing! Great job putting it together.

[Keithalw]

Isit better to have higher or lower revs? As an amateur bowler new to sanctioned league is this something I should worry about right now?

[J Anderson]

Isit better to have higher or lower revs? As an amateur bowler new to sanctioned league is this something I should worry about right now?

It is far more important to have a shot that you can repeat in your sleep. Generally speaking higher revs give you more pin action. All the pin action in the world isn't going to help if you can't hit your target, or if your speed goes up and down on every shot.

[billf]

I totally agree with John 100%

[Hampe]

Yep....that's what I would say. Get an accurate and repeatable approach/shot down, then you can worry about getting revs on the ball.

[Keithalw]

The guy who has been helping me out at the local bowling alley has been telling me the same things hit my mark and consistency

[billf]

Once you're to the point, matching your revs and speed is ideal. Very, very few bowlers fall into this category. So it's not something to worry about, even later, but something to work on later. The higher the rev rate the longer the ball will stay in the skid phase, retaining energy for the hook and roll phases. It's what allows players to play different angles to achieve the same result among other factors.