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Posted

I put this under the tackle section because it does have something to do with tackle...more physics but a lure is involved...

This is the pendulum(spelling is wrong) method of fishing jigs.  Any object that is attached to a string (or just the right amount of gravity) will continue along a circle-like path until it's travel is interrupted by something.  So any lure will travel in a circle until it hits something or runs out of momentum.  With that said, here we go...  The object of this experiment is to keep the lure at 15ft depth.

Cast distance-45ft

Target Depth-15ft

Equipment 1/2 oz jig, 7ft rod

Assuming that the rod was put at the -45deg. angle after the cast, raising it up 45deg. would cause a 9.8 (call it 10ft) difference.  I got this by a2+b2=c2.  (7x7)+(7x7)=98, (call it 100).  Square root of that is 10ft difference in line.

So by raising the rod 45deg, there is 10ft less string for the lure to work with, leaving 35ft out there.  

35-20=15, our target depth, so I have to reel in 20ft of line during the duration of the retrieve to maintain a constant depth of 15ft.  

Assuming that the lure falls at 1ft per second, it would take 20seconds for the lure to fall to the boat without any assistance from the angler.  So divide 15 by 20 is .75...which translates into 9inches need to be reeled in per second to maintain a 15ft depth.  Is this right?

Posted

I think all that french-fried my brain.But it sounds good to me.Talk about taking your fishing to the next lavel,lol.

Guest the_muddy_man
Posted

If you figure in the mass coefficeint of the lure against the molecular makeup of the water. Then you need to get a small booklet on Einsteins theroy of matter and incorporate your presentation with thwe Watson and Creeks model of DNA  I think 9 inches is about right

Posted
If you figure in the mass coefficeint of the lure against the molecular makeup of the water. Then you need to get a small booklet on Einsteins theroy of matter and incorporate your presentation with thwe Watson and Creeks model of DNA I think 9 inches is about right

HAHAHAHA ;D ;D ;D

  dont forget the effects of the flux capacitor & the trajectory of the suns rays on the lure too :)

Posted

All I have to say, is that you have way too much time on your hands bro...  Way too much!  :P  Maybe if you just applied casting, reeling and catching fish, you wouldn't need math!  C+R+CF=:)

Posted

;D

I think 1/3 turn of the reel handle per second is closer to the truth... ::)

You got nothing better to do than screw up our brains ?????????  

GO  FISH !!!!!!!!!!

Posted

Hey guys dont go so hard on him. I hate math with a passion but everyone tells me "you'll be glad you learned it sooner or later" so why not put math to a good use and apply it to fishing? Some of you guys don't want to get into fishing to the point where it requires alot of thinking, and thats perfectly fine. But some of us will memorize pi to the thousandth digit if it would help us to catch fish.

JMHO :)

Posted

I think you are on the right track, but your math is flawed.  The Pythagorean Theorem only applies to right triangles.  Are you contending that the line forms the hypotenuse of the right triangle?  If so, I disagree. The drag caused by the hydrodynamic forces against the jig causes the line to extend out beyond the theoretical c2 thus increasing the angle of the rod to the line and decreasing the angle of the surface of the water to the line.  This means the triangle formed by the rod/line/surface is not a right triangle and the Pythagorean Theorem does not apply.  Also, the angles will vary as the jig approaches the boat so trigonometry will not work either.  I suspect that a calculus equation describing the parabola formed by the jig could be worked out to give you your answer, but it has been too long since I took calculus for me to work it out for you.  Keep up the analytical thinking, though.  I really admire it and it can only lead to good things for you.  If I have mischaracterized your theory let me know and I'll rethink it.

Posted
Do you have one of those bugger pockets for your calculator with " I Love Bass Fishing " on it?, and have you read all of Timothy O'Leary's books? :P

Of all life's pleasures, fishing and science are among my favorites  :)

Posted

That was meant as a little fun ribbing Cephkiller,lol. I love science too. Want to read one of my favorite books?, read Cosmos by Carl Sagan. It is great reading. When it comes to my style fishing, I am on the Kindergarden 2+2=4 level,lol. ;D :)

Posted

I really dont think this could be calculated with all the variables.  Wind, current, water density, resistance of lure, lure density, etc.  I like the concept behind it though.  

Glad I'm not the only number cruncher here.  I dont get into the science too much mostly bean counting and fractions.

  • Super User
Posted

Hey Brian,

I think you should have put this in the "I just got a headache section"LOL

STAY SAFE,

Falcon

Guest the_muddy_man
Posted

My brain is too tense to think about all this:  2/10 the size of a normal brain

Posted
My brain is too tense to think about all this: 2/10 the size of a normal brain

Muddy wouldnt that be 1/5 the size of a normal brain :)

Posted
That was meant as a little fun ribbing Cephkiller,lol. I love science too. Want to read one of my favorite books?, read Cosmos by Carl Sagan. It is great reading. When it comes to my style fishing, I am on the Kindergarden 2+2=4 level,lol. ;D :)

No offense taken.  I think I have read cosmos, but I'm not sure.  I read A LOT and have done so for many, many years so I am sometimes unsure of what exactly I have read, but I am certainly open to reading it again if I have.  Thanks.

  • Super User
Posted
That was meant as a little fun ribbing Cephkiller,lol. I love science too. Want to read one of my favorite books?, read Cosmos by Carl Sagan. It is great reading. When it comes to my style fishing, I am on the Kindergarden 2+2=4 level,lol. ;D :)

lol at "kindergarden" now thats irony!  Try kindergarten next time LOL :) just messin with ya!

muddy, i got it :P

tense-tenths...funny!

Guest the_muddy_man
Posted

Ah Gman if you factor it THE JOKE WILL NOT WORK

What A Mook

Posted

I think i just ticked myself.... this is just funny.

So whats the displacement of my lure when i cast about 40 yards towards the bank and retrieve it completely back at a pace of 10 ft a second.

lol jk jk jk.

Anyway i know what you mean and ive thought like this before. Right concept but im on the pool idea :).... fishing is my getaway from college :P so the less thinking i can do the better... although i do think a lot during tournaments :/...

OH YA BE SAFE IN IRAQ BRO GOD BLESS YA

SteveL

Posted
If you figure in the mass coefficeint of the lure against the molecular makeup of the water. Then you need to get a small booklet on Einsteins theroy of matter and incorporate your presentation with thwe Watson and Creeks model of DNA I think 9 inches is about right

ALSO!!!! I think Newton's law of gravity has to figure in it somewhere as well as Einstein's theory of Relativity. Sounds like someone has to much time on their hands to do all that math.

Posted

Newton's Law of Motion , or better yet keplers law of planetary motion ... you know how thats gonna throw your lure off....

EEEEEK HEAD HURTS ...............

SteveL

Posted
I've figured the exact fall rates of senkos and a lot of their knockoffs.  I keep it in my fishing book which lives in my tacklebox.  They come in handy when deciding to use a GYCB Senko, a Tiki Stick, or a hand-poured.

How the heck can you do that????  In the tank they look pretty identical.  (We did Dinger, *** and GYCB)

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