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Posts: 10
| I have tying inline bucktail spinnerbaits for a while and recently have been trying different size blades on double spinnerbaits.
Does anyone have a simple explanation of why the blades rotate around rather than just wobble like a spoon does on a retrieve?
Thanks |
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Posts: 1188
| Because they are on a clevis that rotates around the shaft. |
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Posts: 102
| Vortex shedding. Good question, probably a rabbit hole of more complicated answers. TCESOX probably has it correct, an anchored shaft causes it to rotate. Now would a spoon spin around if it were on a shaft? Or is it the shape of the spoon or blade that causes it to spin or wobble? |
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Posts: 357
| they spin on the back of a spinnerbait as well so cant be the shaft |
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Posts: 572
| The blade on the back of a spinnerbait is normally attached to a ball bearing swivel, which will rotate fairly easy.
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Posts: 102
| Hmmm good point about a spinner bait blade. For that matter, depending on the spoon, if it is reeled in very fast they also tend to spin (not quite like a spinner though). And the same as a large bucktail blade, reeled in slowly they don't spin. |
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Posts: 21
| I don't have an engineering degree and the lakes are frozen so I can't test, but I would theorize that the following are factors:
- Blade thickness/weight
- Retrieve speed
- Shaft interference
- Blade attachment to clevis is anchored vs. front of spoon moves freely
- Spoon has hook trailer, blade does not
So, a spoon is thicker/heavier. Therefore, it requires a faster retrieve speed to cause it to spin. In contrast, a thin spinner blade would wobble on a really slow retrieve--except the shaft bumps the blade and stops the wobbling. You could test this theory by retrieving a spinner blade by itself really slow and see if it wobbles. Finally, the front of the spinner blade is anchored to the lure with a clevis and is somewhat fixed--thereby causing spin. In contrast, the front of spoon is free to move side-to-side with the rest of the lure--thereby causing wobble. Lastly, a spoon has a trailer hook that weighs it down.
Brian
Edited by lelekb 2/26/2020 1:06 PM
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Posts: 390
| A simplistic response is the force exerted on the blade finds the path of least resistance and the blade spins as it rotates slightly in its axis. As we know the resistance of a spinning blade is greater than one that doesn’t which leads to the next part. The force of the water over the blade overcomes the path of least residence, it would require addition force to stop. This is a function of the blade shape and its ability to form a vortex. Hope that helps. |
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