Hi, Bill Sempsrott from BTM has created a new rotation and tilt overlay, which he has given permission to share. It looks great, can be used for right and left handers, and also includes positive and negative tilt.
Please find attached.
Dean
New rotation/tilt overlay
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- deanchamp
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- Location: Melbourne, Australia
New rotation/tilt overlay
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- EricHartwell
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- Positive Axis Point: 4-3/4" and 1/2"up
- Speed: 16 off hand
- Rev Rate: 330
- Axis Tilt: 12
- Axis Rotation: 45
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Re: New rotation/tilt overlay
I have seen one bowler with more negative tilt than 20* so I know they are out there.
Wondering why the scale was left incomplete on the negative side?
Wondering why the scale was left incomplete on the negative side?
Eric Hartwell
Right Handed
PAP 4.75" up 1/2"
45* rotation
12* tilt
330 rev rate
16 mph off hand
Right Handed
PAP 4.75" up 1/2"
45* rotation
12* tilt
330 rev rate
16 mph off hand
- deanchamp
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Re: New rotation/tilt overlay
I think if somone has more than negative twenty degrees of tilt they should be working on their release as a priority!
USBC Silver Level Coach
BCU Graduate - Mastery of Layouts
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BCU Graduate - Mastery of Layouts
BTM contributor
Re: New rotation/tilt overlay
More (less?) than -20 degrees of tilt is extreme. Unless you're considering a backup release...
I've only worked with two bowlers anywhere close to that. Mo calls them "over-rolled full-rollers".
I've only worked with two bowlers anywhere close to that. Mo calls them "over-rolled full-rollers".
- fufu
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Re: New rotation/tilt overlay
So I normally mark the PAP, then slo-mo video a shot and eyeball the sis rotation. How can I utilize the overlay?
http://www.rotogrip.com" onclick="window.open(this.href);return false;
https://www.facebook.com/Round-Holes-No ... 602077080/" onclick="window.open(this.href);return false;
https://www.facebook.com/Round-Holes-No ... 602077080/" onclick="window.open(this.href);return false;
- deanchamp
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Re: New rotation/tilt overlay
You need to use a video editing program, where you can place the overlay in a video layer above the footage, and then zoom in on the ball until they match. I use Sony Vegas. You also need to make sure you are videoing directly behind the launch angle of the ball.
The attached example has 40 degrees of rotation. I always measure tilt using the first oil ring on the ball and not the overaly.
Dean
The attached example has 40 degrees of rotation. I always measure tilt using the first oil ring on the ball and not the overaly.
Dean
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USBC Silver Level Coach
BCU Graduate - Mastery of Layouts
BTM contributor
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- fufu
- Member
- Posts: 451
- Joined: January 29th, 2010, 10:39 pm
- THS Average: 230
- Positive Axis Point: 5 right, 3/8 up
- Speed: 16
- Rev Rate: 320
- Axis Tilt: 17
- Axis Rotation: 55
Re: New rotation/tilt overlay
Makes sense. Thank you sir.deanchamp wrote:You need to use a video editing program, where you can place the overlay in a video layer above the footage, and then zoom in on the ball until they match. I use Sony Vegas. You also need to make sure you are videoing directly behind the launch angle of the ball.
The attached example has 40 degrees of rotation. I always measure tilt using the first oil ring on the ball and not the overaly.
Dean
http://www.rotogrip.com" onclick="window.open(this.href);return false;
https://www.facebook.com/Round-Holes-No ... 602077080/" onclick="window.open(this.href);return false;
https://www.facebook.com/Round-Holes-No ... 602077080/" onclick="window.open(this.href);return false;
Re: New rotation/tilt overlay
deanchamp wrote:You need to use a video editing program, where you can place the overlay in a video layer above the footage, and then zoom in on the ball until they match. I use Sony Vegas. You also need to make sure you are videoing directly behind the launch angle of the ball.
The attached example has 40 degrees of rotation. I always measure tilt using the first oil ring on the ball and not the overaly.
Dean
How do you measure the tilt using the first oil ring exactly?