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Old 07-08-2018, 10:58 AM   #16
SpankTheTank
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Re: Float Stackup

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Originally Posted by jfjf View Post
MAKO HP floats are pretty tough, I've yet to damage mine!
Do you know the capabilities as far as lift and depth goes for the Mako HP floats?
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Old 07-08-2018, 06:32 PM   #17
jfjf
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Re: Float Stackup

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Originally Posted by SpankTheTank View Post
Do you know the capabilities as far as lift and depth goes for the Mako HP floats?
Well the 15 liter should have over 30 lbs of lift the 30 liter over 60 lbs and the 60 liter well over 120 lbs. the website description has the following info:

The 15 L & 30 L floats have a max pressure of 21 psi which can provide 100% of the lift at about 45 feet. The much larger 60L float has a max. pressure of 15 psi which provides 100% of the lift capacity at a depth of about 35 feet.
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Old 07-09-2018, 09:38 PM   #18
TheMackDaddy
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Re: Float Stackup

how did you calculate those curves in the image?
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Old 01-19-2019, 02:12 PM   #19
Stephane
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Re: Float Stackup

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Originally Posted by TheMackDaddy View Post
how did you calculate those curves in the image?
It seems he made an isothermic assumption (that the air stays at the same temperature), which is not realistic. Things happens too fast for that to happen when a float goes down pulled by a big fish. The result of this assumption gives a volume that is inversely proportional to pressure (hence depth). In almost every discussion about floats, people seems to make that assumption.

The air in the float will more realisticaly go through an adiabatic process (no heat exchange). The volume will fall more slowly than in the isothermic assumption because the air will heat up as the pressure rises.

Here we can see the difference between the two assumptions for the Gannet 100.
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Last edited by Stephane; 01-19-2019 at 08:19 PM.
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