The Math of Buoyancy

[Pete F.]

And then you can start on fluid dynamics, the other art of the equation.

[BigFish]

Good luck with all that??? Looking to re-invent the wheel?? Make em'....best you can....and fish em'!

[Eric Roach]

Originally Posted by BigFish

...Make em' best you can...

Tryin' -- that's why I posted the question.

Originally Posted by Saltheart

If you adjust the total weight of the lure to the same weight for all by using lead to compensate for the density differences of the wood...the lures will all sink at the same rate.

Thanks for the helpful explanation, this will save me some time.

Originally Posted by numbskull

...water resistance as they go down...The more tail weighted the needle the more it will want to plane to the top...

Thanks, your explanation of this a couple years ago really helped me build waking needles.

In mine, the tail lead and belly lead weigh the same, the reverse-pencil shape ensures it sinks tail-first. The tail is thick enough to plane it to the top, and the belly weight placement ahead of the shoulder tips the lure forward when it breaks the surface so it doesn't come in at too steep an angle.