Is there a float to weight chart or calcuation?

[Fishthunder]

I bought some 1 1/4 round floats, the red and white ones. I was trying to figure out how much weight I should use with the floats. Is there a better way than just trying out different weights?

[Team9nine]

I could probably come up with some calculation, but this might give you a starting point…really just have to test.

 

 

[casts_by_fly]

I'm surprised that someone built a weight chart for styrofoam floats.  In europe all floats come printed with the loading weight on them.  The Thill floats in the picture likely do also (the ones I have do).  But the styrofoam floats?  I never would have guessed.  

 

fishthunder- Any amount of weight so long as it floats will work.  When you are adding weight to a float, you are 'setting' it for a depth in the water.  In the picture above, something like D/E/F where you have a long skinny stick on top is all that would be above the water line.  Then the lighest bites only need to pull down the buoyancy of the wooden stick, and none of the actual float.  When you go to something like the Thills at J/K the colors top is all that's above the water when set, but that's a bit more buoyancy to pull down.  Then as the shape gets more top heavy you are talking about more buoyance to pull down and less visibile on top.  A for instance you'd nominally set it at the color change which is half of the styrofoam.  Those ones normally have a lead wrap around on the bottom peg which sets them and helps with casting without needing added weight.  That's the closest to what you have for size and style, though that's foam and I think your's are the plastic ones?  The plastic bobbers won't take as much weight as styrofoam.

 

Also, if you're fishing for bass and just using the bobber as a bite indicator, you don't really need any weight to set the bobber.  A 1 1/4" bobber needs negligible force to pull it down and when a bass hits they aren't going to be gentle.  So you only need the weight for casting and possibly holding your bait down.  If you're fishing a minnow under a bobber 5' deep then a single BB split shot at 4' is about right.