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#1
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water bag usage
Given the record setting soaring weather in the mid-south and southeast this year, does anyone have any experience inflating their water ballast bags so as to be used for a flotation device? Seems like the only way to use them. That's what they're for right? By the way, how do you thermal in the rain? Has anyone ever calculated a polar for an ASW20 fitted with a float kit? Thanks
E |
#2
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water bag usage
Am 13.08.2013 18:51, Echo wrote:
Given the record setting soaring weather in the mid-south and southeast this year, does anyone have any experience inflating their water ballast bags so as to be used for a flotation device? Seems like the only way to use them. That's what they're for right? By the way, how do you thermal in the rain? Has anyone ever calculated a polar for an ASW20 fitted with a float kit? Thanks E Actually I did inflate my water bags a couple of years ago to test for any leaks. I was amazed what 0.2 bar will do to those bags. They could well have been used to construct a floating device, provided we wouldhava had a pond around, and more suitable weather (was around freezing point outside...). And yes, they did hold the pressure for 12 hours, so they're back in the wings now. -- Peter Scholz ASW24 JE |
#3
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water bag usage
On Tuesday, August 13, 2013 11:51:02 AM UTC-5, Echo wrote:
Given the record setting soaring weather in the mid-south and southeast this year, does anyone have any experience inflating their water ballast bags so as to be used for a flotation device? Seems like the only way to use them. That's what they're for right? By the way, how do you thermal in the rain? Has anyone ever calculated a polar for an ASW20 fitted with a float kit? Thanks E Perhaps filling the hags with helium would be more productive? |
#4
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water bag usage
On Tuesday, August 13, 2013 3:18:56 PM UTC-5, lynn wrote:
On Tuesday, August 13, 2013 11:51:02 AM UTC-5, Echo wrote: Given the record setting soaring weather in the mid-south and southeast this year, does anyone have any experience inflating their water ballast bags so as to be used for a flotation device? Seems like the only way to use them. That's what they're for right? By the way, how do you thermal in the rain? Has anyone ever calculated a polar for an ASW20 fitted with a float kit? Thanks E Perhaps filling the hags with helium would be more productive? Of course I meant BAGS not HAGS, but filling hags with helium would be fun to watch. |
#5
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water bag usage
On Tuesday, August 13, 2013 10:24:58 PM UTC+2, lynn wrote:
Perhaps filling the hags with helium would be more productive? Of course I meant BAGS not HAGS, but filling hags with helium would be fun to watch. And to listen to! Kirk 66 |
#6
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water bag usage
On Tue, 13 Aug 2013 13:18:56 -0700 (PDT), lynn
wrote: On Tuesday, August 13, 2013 11:51:02 AM UTC-5, Echo wrote: Given the record setting soaring weather in the mid-south and southeast this year, does anyone have any experience inflating their water ballast bags so as to be used for a flotation device? Seems like the only way to use them. That's what they're for right? By the way, how do you thermal in the rain? Has anyone ever calculated a polar for an ASW20 fitted with a float kit? Thanks E Perhaps filling the hags with helium would be more productive? Well, let's see. An AS-W20 holds 120 kg of water, so the volume of the bags is 120 liters. The density of sea-level air is 1.28 grams per liter, and helium is 0.179. So the lift you'll get is 120L * (1.28g/L - 0.179g/L)=132.5 grams or about 4.7 ounces. We'll listen to your voice on the radio and tell you if you have a helium leak...;-) |
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