Finally, I got around to do some of those kettle buoyancy tests promised.
My plan was to do a thorough scientific study but after seeing the difficulty of trying get a lure to remain neutrally buoyant I quickly decided to wing it. God bless those who make suspending baits.
Here is what I did do:
The experiment consisted of two pots with 3 1/2 inches of water. One pot was warmed to 87.26 F while the other pot was cooled to 40.1 F. I took this lure
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and added enough weight till it would slowly rise in the 87 F water. Next I attempted to time how long it took for this small bait to rise from the bottom of the pot and breech the surface. I say attempted to time. The release of the bait, starting and stopping of the timer and identifying the breech was all subject to my interpretation. I did my best and made several attempts to give an average rather than an absolute but still not perfect or scientific by any means.
Here are the results
87.26 F 6.36 seconds avg
40.10 F 4.79 seconds avg
There was one other caveat of importance noted during the experiment. This goes back to something Bob said about an object shrinking when cold and this effecting it's buoyancy. After doing some testing in the cold water with this small bait, I noticed it did not want to float at all in the warm water. Infact, the same bait that would rise without hesitation would not rise at all after testing in the frigid water. After the bait had had time acclimate to the warmer water( appx 2- 4 minutes) it was once again rising to the surface. I tested this too several times and each time same result. I believe the larger the bait the more of an impact bait temp will have on it. I am equally sure lure composition too will be a factor but in general terms hot baits rise faster than cold ones.
Thank you again Skeeter for bringing up this interesting topic. It has been insightful. Thank you!!
Questions or comments please..........