win a ball from Bowling.com
« previous next »
Pages: 1 [2]

Author Topic: RPM  (Read 2885 times)

makpa

  • Full Member
  • ***
  • Posts: 226
RPM
« on: January 01, 2009, 08:13:27 PM »
can anybody help me here. if i have 24 revs from release to i hit the pins, what is the rpm then?
Logged

 

J_w73

  • Hero Member
  • *****
  • Posts: 2554
Re: RPM
« Reply #16 on: January 02, 2009, 08:20:28 PM »
You have to count the revs in the first 15 or 20 feet of the lane.. once the ball hits friction the revs are going to increase..
example .. a ball rolling at 18 mph and in a complete roll(no sliding or slippage) will be going around 704 rpm...
that is going to squew the real figure


here is a method to calculate it with camera..
I guess you can count the revolutions in the first 20 feet and then figure the rpms off of that..I would use a low flaring/low friction ball to get a true read of what you are actually putting on the ball


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



--------------------
16-17 mph
350-475 rpm
PAP 5 1/2 x 3/8 up
High Game 300 x 3
High Series 782
Book Average 215 / 205
PBA Xperience ave 180
years bowling 22

Edited on 1/2/2009 9:22 PM
Logged
350 RPM, 17 MPH

Burak Natal

  • Sr. Member
  • ****
  • Posts: 352
Re: RPM
« Reply #17 on: January 03, 2009, 06:37:08 AM »
Not to hijack the subject but
quote:

Faster Rev Rate = Cranker - greater than 17 revolutions

J_w73,
Cranking is one of the methods/techniques to create revs. You can stroke like Pete Weber or use two handed delivery like Osku, Belmonte, and can produce faster revs.

Therefore, Faster Rev Rate is not only equals to Cranker. It should be POWER PLAYER which stands for rev rate only, including any technique chosen.
--------------------
Regards,
Natal

Edited on 1/3/2009 10:20 AM
Logged
Regards,

Natal
International Track Staffer

makpa

  • Full Member
  • ***
  • Posts: 226
Re: RPM
« Reply #18 on: January 03, 2009, 07:44:06 AM »
okay i will se if i can come up with some kind of result then. i will give it a shot.
Logged

LuckyLefty

  • Hero Member
  • *****
  • Posts: 17348
Re: RPM
« Reply #19 on: January 03, 2009, 07:56:19 AM »
Much ado about....relatively nothing.

Hit the pocket with revs above 450 you will WIPE them OUT!

Proceed to your nearest alley....destroy racks....return to ballreviews and brag about scores.

REgards,

Luckylefty
PS like a great putter...you've got the world on a string.
--------------------
Open the door...see what's possible...and just walk right on through...that's how easy success feels..
Logged
It takes Courage to have Faith, and Faith to have Courage.

James M. McCurley, New Orleans, Louisiana

thinkyoung

  • Jr. Member
  • **
  • Posts: 48
Re: RPM
« Reply #20 on: January 03, 2009, 08:27:10 AM »
This site was listed yesterday for an axis tilt question.
It can solve your problem.

http://bowlspot.com/page/release

I have to give credit to "bluerrpilot" for the link.
Logged

J_w73

  • Hero Member
  • *****
  • Posts: 2554
Re: RPM
« Reply #21 on: January 03, 2009, 11:01:39 AM »
quote:
Not to hijack the subject but
quote:

Faster Rev Rate = Cranker - greater than 17 revolutions

J_w73,
Cranking is one of the methods/techniques to create revs. You can stroke like Pete Weber or use two handed delivery like Osku, Belmonte, and can produce faster revs.

Therefore, Faster Rev Rate is not only equals to Cranker. It should be POWER PLAYER which stands for rev rate only, including any technique chosen.
--------------------
Regards,
Natal

Edited on 1/3/2009 10:20 AM


ok.. not my words.. just copied and pasted it from a webpage.. maybe I will just post the link next time to avoid confusion.

--------------------
16-17 mph
350-475 rpm
PAP 5 1/2 x 3/8 up
High Game 300 x 3
High Series 782
Book Average 215 / 205
PBA Xperience ave 180
years bowling 22
Logged
350 RPM, 17 MPH

J_w73

  • Hero Member
  • *****
  • Posts: 2554
Re: RPM
« Reply #22 on: January 03, 2009, 11:11:34 AM »
If you throw a ball with 0 revolutions to the dry backend of a lane and when it hits the dry it gets into a complete roll at 12 mph.. it will have 469 rpms...

--------------------
16-17 mph
350-475 rpm
PAP 5 1/2 x 3/8 up
High Game 300 x 3
High Series 782
Book Average 215 / 205
PBA Xperience ave 180
years bowling 22
Logged
350 RPM, 17 MPH
Pages: 1 [2]
« previous next »