[ez2cdave]

In Tournament Casting, what's the maximum speed the sinkers travel at ???

I'm guessing that Danny Moeskops generates the highest speed, since he has the distance record . . .

 

[Tommy]

I have read that the sinker speed of a top tournament caster is over 200 mph.

Tommy

 

[dsurf]

At what point is the sinker when it hits it's max speed?

 

[Tommy]

My guess would be at release. Everything should be working to accelerate the sinker up to release. After that there is no motivating force being applied so it would have to start decelerating.

Tommy

 

[ez2cdave]

"Smokin' Fast" . . . I sure wouldn't want to get hit by that !

A 165 gram sinker, travelling @200 mph ( 300 ft/sec) = 509 ft/lbs of energy ( about the same as most .357 Magnum rounds ).

 

[Don B]

You need to go across the pond for the most accurate info.
u (initial velocity) is solved in their equation.

http://www.worldseafishing.com/forums/threads/what-is-the-speed-of-the-sinker-upon-release.2251543/

 

[ez2cdave]

You need to go across the pond for the most accurate info.
u (initial velocity) is solved in their equation.

http://www.worldseafishing.com/forums/threads/what-is-the-speed-of-the-sinker-upon-release.2251543/

After reading that 18 page long thread, they couldn't seem to come to any firm agreement on the speed among them.

 

[js1172]

20 to 40% slower than my spool!
js

 

[Tommy]

I read somewhere years ago that a radar gun had been used to measure speed in the 200 mph range. Again, this was something I read a long time ago and not based on any tests that I or anyone I know may have performed.

I also read most of Don's referenced thread and didn't see anything concrete, mostly flawed formulas....

There are so many dynamics at play, I don't believe you can plot it out on paper. Someone needs to put a radar gun on Danny, Will or any top level tournament caster to get a firm answer. One thing is for sure, there is A LOT of energy in play.

Tommy

 

[tjbjornsen]

20 to 40% slower than my spool!
js

Now THAT is funny.

 

[ez2cdave]

I wonder if some kind of accelerometer would be practical to use.

http://www.google.ch/patents/US20060052173

 

[Surfjunkie]

I think Dave has the right idea, if they make an accelerometer that can withstand a short flight and landing that is lol

 

[ez2cdave]

I think Dave has the right idea, if they make an accelerometer that can withstand a short flight and landing that is lol

Maybe inside some type of protective housing ?

 

[Surfjunkie]

I seem to think I've seen practice baseballs, for pitchers that give some sort of feed back?

 

[Tommy]

To be accurate, the accelerometer would need to be the approx. size and weight of a comparable sinker. A baseball (or other similarly size object) will not move at the same speed as say a 150 g sinker that weights about the same..

 

[ez2cdave]

To be accurate, the accelerometer would need to be the approx. size and weight of a comparable sinker. A baseball (or other similarly size object) will not move at the same speed as say a 150 g sinker that weights about the same..

Maybe something from the "world of golf" could be adapted . . .

 

[Mastrbaitr]

How about using simple math and basic physics? Why make a mountain out of a mole hill?

 

[ez2cdave]

How about using simple math and basic physics? Why make a mountain out of a mole hill?

OK . . . Have at it !

How are you going to determine the maximum speed of the sinker, right at the moment of release ?

If you're going to try to use time of flight vs. distance, that won't be accurate, since the angle is different every time and there is no practical way to precisley measure it. Also, since the sinker does not fly perfectly straight through the air, the aerodynamic drag force is constantly changing, as the angle of attack of the sinker changes. It would also be necessary to take into account the precise air density, wind speed, and it's vector, relative to the cast, too.

All of that was already discussed in that UK article. In over 18 forum pages, no one had a definitive means to calculate it. Therefor, I am pretty certain it would have to be directly measured ( Radar gun or accelerometer ), unless you have the means to precisely measure all those variables and the mathematical forumulae to calculate it, accurately ?

 

[2ndbar]

Seems to me the sinker can not travel any faster then the tip of the rod. When the rod tip whips forward at the moment of release acceleration stops. The radar gun or similar device seems reasonable.

 

[2ndbar]

Most of the energy is linear. However there is the dynamics of an arc going on. Where the inner arc may be going the same revolution as the outer arc the distance traveled by the outer arc is greater therefore having more speed. Similar to a catapult. That being said, up to the moment of release the sinker could be going slightly faster then the rod tip. Now I've bent my brain around this to the point I am thoroughly convince I have know Idea what I am talking about.