Hello all. Back again.
The "fathers of lure vibration" had this subject all sorted out in the late 1800s/early 1900s. Vincence Strouhal and Theodore Von Karman. Von Karman went on to work for NASA.
They knew nothing about fishing but their work on hydro-and- aero/dynamic vibrations was pretty impressive for its time. It was all mathematics but with no calculators or computers. Before slide rules too I think
As attached.
Can't attach PDF file. Any ideas,pls?
How vibrations are generated by a lure
Re: How vibrations are generated by a lure
Screenshot. Change file to Jpg and upload photo or drag and drop to post.
PM email or phone number and we can walk you through or give other solution.
PM email or phone number and we can walk you through or give other solution.
Re: How vibrations are generated by a lure
Thanks for info.
Converted the PDF to 6 .png files. Still couldn't load so took screenshots. That partially worked.
Won't allow more than 2 files at at time (each is about 250k in size).
Will experiment a bit more so as not to inconvenience you guys.
Got 3 done.
regards
ronje
Converted the PDF to 6 .png files. Still couldn't load so took screenshots. That partially worked.
Won't allow more than 2 files at at time (each is about 250k in size).
Will experiment a bit more so as not to inconvenience you guys.
Got 3 done.
regards
ronje
Re: How vibrations are generated by a lure
Here are other 3 pages (making 6)
Re: How vibrations are generated by a lure
How do these 6 pages translate into something useful for any lure fisherman?
Well, we know that a fish's lateral line has evolved over many thousands of years to detect low frequency vibrations. eg 10 hz.
What does 10 hz mean? It means 10 cycles/beats per second. Still doesn't mean much?
It translates to 600 cycles/beats per minute. What we might understand a bit better is revs per minute (rpm).
10 hz = 600 rpm.
So our lure will have to vibrate at around 600 rpm to be in the fish's best lateral line rpm response ballpark.
Only 2 things about the lure determine its rpm.
The bib width and the speed of retrieve..
Remember that this relates also to soft plastic paddle-tails and vibe lures (soft, hard and blades).
We'll catch up with them.
Well, we know that a fish's lateral line has evolved over many thousands of years to detect low frequency vibrations. eg 10 hz.
What does 10 hz mean? It means 10 cycles/beats per second. Still doesn't mean much?
It translates to 600 cycles/beats per minute. What we might understand a bit better is revs per minute (rpm).
10 hz = 600 rpm.
So our lure will have to vibrate at around 600 rpm to be in the fish's best lateral line rpm response ballpark.
Only 2 things about the lure determine its rpm.
The bib width and the speed of retrieve..
Remember that this relates also to soft plastic paddle-tails and vibe lures (soft, hard and blades).
We'll catch up with them.
Re: How vibrations are generated by a lure
Here's why we don't have to take a calculator with us when we go fishing or buying lures.
We know that the fish lateral line has evolved over thousands/hundreds of thousands a year to have best response @ 10 hz.
Technical/scientific stuff again. That translates to 600 beats/revs per minute.
So we give ourselves the best chance of attracting a fish's attention if we use a lure that generates 600 rpm vibrations.
How do we ensure that our lure vibrates at 600rpm?
Easy. Use Strouhal's formula to figure out the bib width needed.
As I said, I don't have a lot of success in mathematics once beyond the number 21. I'm guessing that no fisherman wants to play around with a formula invented by a research scientist like Vincence Strohal 100 or more years ago.
Strouhal's formula was modified to take input and give results in a more modern format.
Remember this which covers h/body lures with bibs of 3 different widths? You guys can calculate your own.
What can we do as an alternative to a flat battery in our calculator or we forgot it or we aren't allowed to take it into a lure store.?
Take this with you. Then you've got walls and walls of lures to think about without getting bogged down in the endless descriptions of lure "action". There it is right and front of you.
What action (beats per minute or rpm) each and every one of the hardbody lures in sight actually has.
Here's the image of "this". 8 different commonly used bib widths in mm with the resulting vibration rates in rpm/bpm.
No complicated names, descriptions etc. Just plain old quantitative facts.
Secrets time.
A few years ago I had already found the Strouhal and Von Karman vibration work and how it affected fishing lures.
But it was a guy in the Phillipines who I met up with a bit later and who finished off the lure/scientist connection for me. I'm glad that he did 'cos it's made lure understanding and design so easy.
We know that the fish lateral line has evolved over thousands/hundreds of thousands a year to have best response @ 10 hz.
Technical/scientific stuff again. That translates to 600 beats/revs per minute.
So we give ourselves the best chance of attracting a fish's attention if we use a lure that generates 600 rpm vibrations.
How do we ensure that our lure vibrates at 600rpm?
Easy. Use Strouhal's formula to figure out the bib width needed.
As I said, I don't have a lot of success in mathematics once beyond the number 21. I'm guessing that no fisherman wants to play around with a formula invented by a research scientist like Vincence Strohal 100 or more years ago.
Strouhal's formula was modified to take input and give results in a more modern format.
Remember this which covers h/body lures with bibs of 3 different widths? You guys can calculate your own.
What can we do as an alternative to a flat battery in our calculator or we forgot it or we aren't allowed to take it into a lure store.?
Take this with you. Then you've got walls and walls of lures to think about without getting bogged down in the endless descriptions of lure "action". There it is right and front of you.
What action (beats per minute or rpm) each and every one of the hardbody lures in sight actually has.
Here's the image of "this". 8 different commonly used bib widths in mm with the resulting vibration rates in rpm/bpm.
No complicated names, descriptions etc. Just plain old quantitative facts.
Secrets time.
A few years ago I had already found the Strouhal and Von Karman vibration work and how it affected fishing lures.
But it was a guy in the Phillipines who I met up with a bit later and who finished off the lure/scientist connection for me. I'm glad that he did 'cos it's made lure understanding and design so easy.
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Re: How vibrations are generated by a lure
If anybody wants a copy of Strouhal's formula (an interactice one that they can use) just yell out.
If I can put it up on here I will (so everybody can have it to use).
I'll put up another post showing how soft plastics work and the benefit of a change from hardbodied lures to paddle-tail soft plastics.
If I can put it up on here I will (so everybody can have it to use).
I'll put up another post showing how soft plastics work and the benefit of a change from hardbodied lures to paddle-tail soft plastics.
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