Wanna check my math?? 2024

Brian_Reeves reply :

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?

garry77 reply :

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 reply :

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

volpster31 reply :

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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

BucketmouthAngler13 reply :

I'll have to test this out in my pool.

*adds to bookmarks*

wickyman reply :

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

sal669 reply :

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 !!!!!!!!!!

BucketmouthAngler13 reply :

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

Cephkiller reply :

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.

justfishin reply :

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?

Cephkiller reply :

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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?

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

justfishin reply :

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

Siebert Outdoors reply :

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.

MALTESE FALCON reply :

Hey Brian,

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

STAY SAFE,

Falcon

guest reply :

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

Siebert Outdoors reply :

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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

Cephkiller reply :

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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.

fourbizz reply :

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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

tense-tenths...funny!

llPa1nll reply :

The Big Yellow ones the SUN

fourbizz reply :

Brian Regan

guest reply :

Ah Gman if you factor it THE JOKE WILL NOT WORK

What A Mook

slarose20 reply :

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 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

Pa Angler reply :

Quote
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.

slarose20 reply :

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

Low_Budget_Hooker reply :

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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)

FatBoy reply :

WARNING!!!! THIS POST IS NOT FOR THE MATHEMATOPHOBIC OR THOSE PRONE TO MIGRAINES.

Finally somebody's talking my language. Turns out you can solve this with geometry, at least for specific points in the retrieve. What you have to do is reel in enough line to make up for the jigs fall rate. Because the line is at an angle (not vertical), the VERTICAL COMPONENT of the line movement has to equal the fall rate of the jig (but in the opposite direction of course).

Let's assume the jig sinks at 1 ft/sec. When you have out 45 ft of line, a 7 ft rod pointed straight up and the jig is at 15 ft deep, the jig is 39 ft from the boat (using the Pythagorean theorem). The angle between the line and the horizontal plane is 29 deg [sin(29deg) = 22/45 where 22 is the 15 ft depth + 7 ft rod and 45 is the length of line (i.e., the hypotenuse)]. So with a 1 ft/sec fall rate, you need to reel in about 2 ft/sec (1 ft/sec / sin(29deg) = 2.06 ft/sec ). When the jig gets to 20 ft from the boat, you have 30 ft of line out and the line makes a 48 deg angle with the horizontal. At that point, you need to reel in at 1.3 ft/sec.

To summarize, as the jig gets closer to the boat, you need to reel slower to maintain a constant depth. With 45 ft of line out, you start at 2 ft/sec and end at 1 ft/sec.

The take home message is that you should experiment in the pool until you get the hang of it.

(Now aren't you sorry you asked? ;D ;D ;D ;D)

Cephkiller reply :

Realizing, of course, that most of us hold our rods closer to 45 degrees and not 90. Also, the fact that we hold our rod butt approximately waist high and the fact that the angler is standing on his casting deck probably adds around 5-6 feet to the vertical leg of the triangle. As a happy coincidence these forgotten factors nearly cancel each other out and the result is the 2 ft/sec slowing to 1 ft/sec still works out roughly as the correct answer. Well done, Sir!

FatBoy reply :

You're absolutely right Ceph. Good catch!

Regardless of all the math, what we can learn from all this is that the shallower you want your lure to run, the faster you should reel. Also, to maintain a constant depth all the way back to the boat, you need to slow down the retrieve as the lure gets closer. If you don't slow down, the lure will rise in the water column.

I'm willing to bet most of the guys here are saying "well, duh!" ;D ;D ;D

Cephkiller reply :

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I'm willing to bet most of the guys here are saying "well, duh!" ;D ;D ;D

Afetr I had drawn a diagram and used a calculator and thought about all of this for a good long while I came to the same conclusion. Oh well, it was still a fun little excercise. All the math I ever get to do at work involves chemistry and statistics. Physics and geometry are fun!

FatBoy reply :

Quote

Quote
I'm willing to bet most of the guys here are saying "well, duh!" ;D ;D ;D

Afetr I had drawn a diagram and used a calculator and thought about all of this for a good long while I came to the same conclusion. Oh well, it was still a fun little excercise. All the math I ever get to do at work involves chemistry and statistics. Physics and geometry are fun!

We're just a couple of bassin' geeks!

justfishin reply :

Fourbizzle, ;D

Thanks guys, that was a interesting post. I had the old paper and calculator out. The only math I get to do anymore afe pharmaceutical calculations for meds per patient weight. Why don't a couple of you guys figure out some brain teasers to post?

fourbizz reply :

I've got one:

How many BassResource.com geeks does it take to screw on a shakey worm....

LOL! Math makes my brain hurt. Other than drinking and picking up girls, the only thing I did well at in school was English. But the word well could probably just be switched to mediocre...

Top reply :

Quote

Quote

Quote
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)

Stopwatch hooked to an actuator that was tied into an IR single beam motion sensor...(stolen Iraqi IED materials), 2 hours of time, 2 weeks of waiting for the packages to get in, and a large fish tank that we bought off of the iraqi market.

I had my wife email me the results since I left my fishing book at home.

The Tiki stick falls at 1/10th sec faster than a GYCB Senko. Senkos and Kinamis fall at exactly the same rate. *** falls at 1/50th of a second slower than a senko and a Dinger fell at 1/20 of a second slower. Take into account for the human error in drop/stopwatch start button time...and yeah...they fall pretty much at exactly the same rate.... But it makes me feel better to know that there -could- be a difference and I actually use the times for faster/slower descents to choose which ones based on water temp and fish aggressiveness...and how deep I have to let it sink. Stupid huh?

Well when I hit 14 months in country I believe I will be just like you and fish in my mind hahahahaha only thing I forget is the fish don't know all these math equations!

well done bro!

RecMar8541 reply :

ok first off for you pi r2 guys. Pi are round cornbread are square.....sheesh....any mook knows that.....now

if I see a bass poket protector any where at any time....im gonna take up golf!

hehehehehhehhehe

Recon

bassmaster8100 reply :

never seen anyone use math for fishing , guess whatever work for ya. I dont use math just time on the water experimenting with diffent methods and tequniques for me.

SPEEDBEAD. reply :

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I've got one:
How many BassResource.com geeks does it take to screw on a shakey worm....

LOL! Math makes my brain hurt. Other than drinking and picking up girls, the only thing I did well at in school was English. But the word well could probably just be switched to mediocre...

Bizzle, on this end, your correct spelling and typing is much appreciated...LOL

Wayne

links_man2 reply :

Geeeeeez---I am going fishing to clear my head of all this. Mindless cast and catch fishing.

RoLo reply :

I like your scientific approach to fishing, it's a darn-sight better than stabs in the dark.

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Assuming that the lure falls at 1ft per second

Trouble is, a lure does not fall at a constant rate, but descends slower-and-slower as it nears the bottom.

Some mistakenly believe that this slowing fall-rate is due to water pressure which increases with depth.

Water however is fairly incompressible so water pressure isn't a big factor, but two other factors enter the equation:

1. Water Temperature

During its descent the lure will pass through different water temperatures. It only takes one dive off the high-dive

to appreciate the difference in water temperature between the surface and 8 ft below the surface.

Water not only seeks its own level, but is constantly re-stratifying according to temperature changes.

Warmer water is lighter than colder water, and continues to rise until it reaches a like temperature (density).

Colder water is heavier than warmer water, and continues to fall until it reaches a like temperature.

The volume of water displaced by the lure is constant, but the weight of displaced water is heavier toward the bottom.

As a result, the lure falls faster in the warmer upper strata but slower in the cooler bottom layers.

2. Line-Drag

Fishing line may look thin, but 50-foot of fishing line creates considerable drag in the water.

As the lure sinks, more of the line above the water is dragged below the surface.

Line-drag increases dramatically as the length of line in the water increases and/or the diameter of the line is increased.

For instance, anglers who do a lot of trolling soon discover that when too much line is paid astern,

the lure will actually begin riding-up in the water column rather than going deeper (i.e. line drag).

Roger

Hookemdown. reply :

Wow. I like taking a scientific approach to my fishing, but I've never gotten into it this deep. Kudos to all of you guys that are waaaaaaaaaaaaaaaaaaaaaaaaaaaaay smarter than me.

hi_steel_basser reply :

HUH?!?!? ;D So you're saying that a lure ought to fall in the water until you start to retreive it right? What about if you cast it 100' and feed slack for -uh-until it touches bottom? Then reel it back real nice and slow? Would the whole time warp equilibrium stratacaster thingie lose equilibrium after 30 reel handle cranks?

Cephkiller reply :

No no no. According to the arc described by Foucault's pendulum, when the lure touches the botttom of the lake, it invokes Special Relativity (which of course overturns Newtonian notions of absolute space and time) and could thus be said to actually be at rest depending on the perspective of the observer. We could then utilize quantum theory to hypothesize that the lure could actually be at the end of the line while simultaneously residing at the tip of the rod. The actual position of the lure could possibly be calculated using Schrödinger's wave equation and the lure could thus be said to resemble Schrödinger's cat ;D ;D ;D

Trust me, if there are any physicists reading this, I am hilarious ;D ;D

Cephkiller reply :

BTW, if there are actually any physicists reading this, please don't critique. Some of this isn't technically correct, I started out typing gibberish and ended with a semi - correct flourish

islandbass reply :

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No no no. According to the arc described by Foucault's pendulum, when the lure touches the botttom of the lake, it invokes Special Relativity (which of course overturns Newtonian notions of absolute space and time) and could thus be said to actually be at rest depending on the perspective of the observer. We could then utilize quantum theory to hypothesize that the lure could actually be at the end of the line while simultaneously residing at the tip of the rod. The actual position of the lure could possibly be calculated using Schrödinger's wave equation and the lure could thus be said to resemble Schrödinger's cat ;D ;D ;D
Trust me, if there are any physicists reading this, I am hilarious ;D ;D

I did some experimenting in my lab last night and discovered that if you add a flux capacitor to your equation, you would alleviate the problems caused by the flow of the tachyon stream, which undoubtedly influences the line's drag. It would also enable the electrons to jump from a lower state of activity to a higher one, thus eliminating the line's drag altogether and therby adding action to the lure independent of the angler's input. It will also allow the angler to recover line proportional to the inverse square of 1/X^2.

I am going to get some sleep now and put away my quantum physics book. ;D

Pond-Pro reply :

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The Big Yellow ones the SUN

Ha Ha ;D

I really didn't think that math beyond 6th grade applied to life at all. We are just learning about parabolas at school and it's kinda cool to think that it might actualy matter. Im not good at math, but its cool to know that I can almost use it with fishing. However, all the variables in this situation make it kinda unpracticle. I'd rather just through a deep suspending jerkbait anyway.

Thanks for posting that, it was interesting.

FatBoy reply :

Quote
No no no. According to the arc described by Foucault's pendulum, when the lure touches the botttom of the lake, it invokes Special Relativity (which of course overturns Newtonian notions of absolute space and time) and could thus be said to actually be at rest depending on the perspective of the observer. We could then utilize quantum theory to hypothesize that the lure could actually be at the end of the line while simultaneously residing at the tip of the rod. The actual position of the lure could possibly be calculated using Schrödinger's wave equation and the lure could thus be said to resemble Schrödinger's cat ;D ;D ;D
Trust me, if there are any physicists reading this, I am hilarious ;D ;D

I'm a chemical engineer, not a physicist. But that's still kinda funny! ;D ;D ;D

(You don't see references to the Schroedinger wave equation on BassResource.com very often!!!)

6696

Wanna check my math?? 2024

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