Measuring RPM...

[ReiKo]

How do they exactly this do? I want to measure my RPM when I throw down the lane...


Tips? Ideas?

[VmsTopGun]

From a post by the Moderator

Here isa a way to determine your rev rate by yourself

Calculate RPMs
Use a low flare bowling ball
Place a contrasting piece of tape from the PAP to above the fingers
Film (30 frames per second) your release from behind so that ball from your release to the arrows is clearly visible
Replay the recorded video back using frame by frame viewing
At the point of release, keep note of where the piece of tape points
Method 1
Advance the video frame by frame for 10 frames and keep track how many times the ball revolves
Enter your number of revolutions ( example 1.3, 2.5 )
Your RPMs =
Method 2
Advance the video frame by frame and count how many frames occur between 1 revolution
Enter your number of frames ( example 2.3, 3.5 )
Your RPMs =
Calculate Revolution Count
Using the same video from the RPM calculation...
Advance the video until the ball reaches the center arrow and count the number of times the tape revolves from the release point
Enter your number of revolutions ( example 2.3, 3.5 )
Your revolution count =
Slower Rev Rate = Stroker - up to 11 revolutions
Medium Rev Rate = Tweener - from 11 to 17 revolutions
Faster Rev Rate = Cranker - greater than 17 revolutions

[ReiKo]

Thank you very much... :)