Helium for rafts? - Mountain Buzz
 



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Old 06-01-2015   #1
 
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Coquitlam, BC, Canada
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Helium for rafts?

I heard recently that some raft manufacturers have been experimenting with helium. Apparently it makes your boat float a couple inches higher which helps performance. Anyone heard on the progress of this?

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Old 06-01-2015   #2
 
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ummm, no. but hydrogen gives you better performence if your lookin for lift

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Old 06-01-2015   #3
 
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No, but if you could tell me the Cubic Meters or feet of fillable space and the weight of your raft I could tell you the gross buoyancy lift of your He filled raft.
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Old 06-01-2015   #4
 
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Guessing that would be expensive to fill up. Us poverty boaters will stick to the free air around us.

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Old 06-01-2015   #5
 
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Being as helium can diffuse through materials much more readily than air I wouldn't be that interested. I suppose someone much smarter than me could comment on using something cheaper like nitrogen to give you a small advantage over air though I'm pretty sure nitrogen doesn't give you much of an advantage as far as a lifting gas.
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Old 06-01-2015   #6
 
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Air is 78% nitrogen there would not be a noticeable advantage using pure nitrogen. Helium will lift 65lbs per 1000 cubic feet. My raft wont come up 2" if I remove 65 lbs let alone hold anywhere near 1000 cubic feet in the tubes. Not woth perusing that one.
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Old 06-01-2015   #7
 
seattle, Washington
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Quote:
Originally Posted by SpeyFitter View Post
I heard recently that some raft manufacturers have been experimenting with helium. Apparently it makes your boat float a couple inches higher which helps performance. Anyone heard on the progress of this?
We use to experiment with nitrous back in the day with mixed results. Do not recommend that anymore. I think helium is only half the weight per square foot compared to oxygen. Doesn't seem worth it time/cost wise.
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Old 06-01-2015   #8
 
Bismarck, North Dakota
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Helium? You could sound like Mickey mouse at the takeout.
Nitrogen, less expansion in the blazing Sun and less leakage due to larger molecule. Cost effective probably not.

And then there is the inflator regulator failure . There goes a tube or 2 on your 4k to 6k raft.
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Old 06-02-2015   #9
 
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As I get older and run harder and less accessible rivers, I often dream of a carbon fiber frame and helium filled tubes.
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Old 06-02-2015   #10
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Somebody's pulling your leg. No mfr would seriously experiment with that. In my 15 1/2 ft self bailer, including the floor, I have about 129 Cu. ft. of air in my boat. Helium would give me about 8 1/2 lbs of lift, enough to offset one 12 pk of beer.
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