#61  
Old 03-29-2013, 12:07 AM
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Dave242 Dave242 is offline
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Originally Posted by kaiser flippin View Post
you guys are killing me today with these oat posts. take a physics class.
Care to explain what OAT really is using proper physics principals and clear, understandable language? It would help all of us I bet.

I'm guessing not..... but would happy to be wrong about that.
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  #62  
Old 03-29-2013, 12:28 AM
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BrotherDave BrotherDave is offline
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Good vid showing OAT.

Something went wrong. Please make sure you added the video correctly. Click here to see how YouTube videos should be embedded. There could also be a technical issue that's not your fault. Click here to view the video on YouTube's site. If this link doesn't work, you did something wrong.

He's got some more vids in super slow-mo on his channel.
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  #63  
Old 03-29-2013, 12:43 AM
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Dave242 Dave242 is offline
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This is a simple enough video with good quality. Maybe I'll understand OAT more if you can point out to me exactly where in his throwing motion it is. What is he doing to cause OAT....and what should he be doing differently?
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  #64  
Old 03-29-2013, 01:11 AM
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kaiser flippin kaiser flippin is online now
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Quote:
Originally Posted by Dave242 View Post
Care to explain what OAT really is using proper physics principals and clear, understandable language? It would help all of us I bet.

I'm guessing not..... but would happy to be wrong about that.
OAT, or Off Axis Torque as applied to a disc in flight, is when multiple vectors (directional forces) are given to a disc upon release. These vectors are often conflicting and will cause a disc to wobble, turn, or slow during it's flight giving undesired, or under certain circumstances intentional variation. The human anatomy has many hinges (hips, shoulders, elbow, wrist, fingers, etc...) at it's disposal to amplify the force being put on a disc, but often they are not aligned properly to create an ideal release. Any small variation will decrease the kinetic energy put into the player's desired vector, thereby increasing opposing forces, the symptoms of which are a "turn and burn," "pop up," etc.
Basically, if your hips are applying force at a 90 degree angle, your shoulders are applying a 95 degree angle, and your wrist is applying an 80 degree angle, that is 3 vectors fighting for control over the disc. One will win, but the others will certainly have a say in where the disc goes.
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  #65  
Old 03-29-2013, 01:11 AM
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If he wants to throw (completely) without OAT he needs to become the Second Coming of Christ so that every throw is with divine perfection.
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  #66  
Old 03-29-2013, 01:17 AM
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kaiser flippin kaiser flippin is online now
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Quote:
Originally Posted by BrotherDave View Post
If he wants to throw (completely) without OAT he needs to become the Second Coming of Christ so that every throw is with divine perfection.
too true. or become a cyborg with a fully robotic skeletal/muscular/nervous systems.
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  #67  
Old 03-29-2013, 01:17 AM
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The disc plane doesn't match the spine/shoulder plane and rolls the wrist under.

If you take aerodynamics out the equation and throw in a vacuum or outer space with oat, a disc wouldn't wobble, it would spin on two axes. Air or drag forces here on earth dominate most off disc plane forces as the disc is very aerodynamic and quickly stabilizes to the least resistant route. That stabilizing to one rotational axis adds to the disc turn one way or the other, where in outer space the disc wouldn't turn either way it would continue on the original trajectory but spin on two axes.
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  #68  
Old 03-29-2013, 09:07 AM
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i think you are ignoring the influence of gyroscopic forces
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  #69  
Old 03-29-2013, 09:35 AM
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Quote:
Originally Posted by sidewinder22 View Post
The disc plane doesn't match the spine/shoulder plane and rolls the wrist under.
I too can see elements of bad for in his throw..... No doubt. But for there to be OAT, there needs to be an Axis and then another axis that is not supposed to be there that has some rotational force around it (Torque).

Can somone show me the 2 axes?
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  #70  
Old 03-29-2013, 09:49 AM
Agricolae Agricolae is offline
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Quote:
Originally Posted by Dave242 View Post
Can somone show me the 2 axes?
Could you see them if they did?

Not trying to be an *ss, but dang, man, put down the stick!
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