|
Post by perchslayer on Oct 11, 2010 15:58:41 GMT -5
I was wondering what you guys thought of this post I did for a new blog I am starting up. I found a formula written by some college professor to calculate sink depth of lead core lines based on speed, line weight, and line diameter. So I made a table for four kinds of lead core line. Would you guys find this useful? I am planning to extend it beyond four colors, but the math gets a lot more complicated. deeptrout.wordpress.com/2010/10/07/lead-line-trolling-depth/(Perchslayer was taken)
|
|
|
Post by salmonslayer on Oct 11, 2010 22:40:17 GMT -5
Good info!! Wonder if there is any calculation out there for lite bite slide divers?
|
|
|
Post by Raz on Oct 12, 2010 5:14:06 GMT -5
I think you missed the changes in water temp causes changes in water density, and therefore changes the sink rate! Maybe...
|
|
|
Post by perchslayer on Oct 12, 2010 7:14:28 GMT -5
Raz, I took many paragraphs of technical mumbo jumbo out of that post, but to four colors, the thermocline affect is about a foot. Anyway, the guy who wrote the original paper tested the formula to about 100 ft out with depth measurements on a still cold lake, so that rules out perfection on Champlain, but the effects of a thermocline are on the order of a foot or two over 100 ft. Given the currents and wave action of Champlain, it will never be possible to figure out to the inch where your lure is. If you read that steelhead fishing article though, to depths of 10 ft or so, they try figure within inches. That is not an option for us. The real effect is called a catenary, and what it means is that even though, for a lead core line, the drag and the weight kind of even out for a short segment of line, say three or four colors, as the line gets longer any imbalance starts to show up as a curve. I have a formula for that, but I wanted to start out with one that had been scientifically verified, since I only minored in physics in college, and am not a qualified engineer. The problem of line depth though, is very similar to a problem we were given in my engineering mechanics course, thirty years ago. So with warnings, I will be posting that pretty soon.
SalmonSlayer, Once I get lead core nailed, I have a model already that does hardware on the end of a line, basically a lead ball is the easiest, because it presents the same profile to the water regardless of angle, so that will be third in the series, and I have a few ideas on the light bite, but nothing concrete yet.
|
|
|
Post by in t h e o f f i c e on Oct 12, 2010 11:29:11 GMT -5
Nice! I was wondering about this- just changed up one leadcore setup to 27# after a break-off 100-something feet out on 18# mason- only a month or two old! Finally decided it happened because a big fish hit but lead was probably wrapped around the rod tip and I did not notice. Wavy that day, can't explain it otherwise.
Anyway, I like data like this. Confirms what I have decided is "the rule" a few years back. Thanks.
|
|
|
Post by perchslayer on Oct 14, 2010 7:19:20 GMT -5
Guestimate your line depth with LC. Attachments:
|
|
|
Post by ddancer on Dec 17, 2015 13:19:43 GMT -5
Good info!! Wonder if there is any calculation out there for lite bite slide divers? I've Fished for trout and bass with Lead core for some years. Trolling with lead core is basically the only type of fishing I do now. Lots of fun and easy relaxing. Some may fine this useful. Lead Core Depth Calculator Https://play.google.com/store/search?q=fishing%20lead%20core&c=apps
|
|
|
Post by wellsley on Dec 23, 2015 18:18:20 GMT -5
Works great for walleye too.
|
|