 Poster: A snowHead
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Obviously A snowHead isn't a real person
Obviously A snowHead isn't a real person
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No need to worry about filling canisters if you trigger it accidentally on a multi-day trip, no flying concerns...
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Well, the person's real but it's just a made up name, see?
Well, the person's real but it's just a made up name, see?
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The question is when ?
Autumn 2014 ? Or later?
Seems strange to leak your product to a science mag.
Could be huge *if* it works....
However seems this idea has still to be proven much beyond concept or perhaps a proto-type ?
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You need to Login to know who's really who.
You need to Login to know who's really who.
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From TGR, I gather maybe 'soft launch' this season, full release next. Supposedly everything works, they're just fine-tuning the battery (*apparently* to make sure it can last 3 days at -30ºC).
No personal knowledge of it though.
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Anyway, snowHeads is much more fun if you do.
Anyway, snowHeads is much more fun if you do.
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Hmm. An interesting idea but I have a doubt. The basic concept is sound, but a fan running at 60000rpm for 3 minutes, in an enclosed space is going to generate a lot of internal heat which it can't dump. Heat leads to failure. Also unsure about the whole deflation thing, Yes you've got an airpocket thanks to the bag, but what are the chances it'll be stable after only 3 minutes to settle? For all its PITAness gas cans are very simple tech with very little to go wrong - once you trigger it the only thing it can do is empty.
Watch with interest...
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You'll need to Register first of course.
You'll need to Register first of course.
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| Haggis_Trap wrote: |
The question is when ?
Autumn 2014 ? Or later?
Seems strange to leak your product to a science mag.
Could be huge *if* it works....
However seems this idea has still to be proven much beyond concept or perhaps a proto-type ? |
Lou Dawson seems to imply he knows a lot more about it than he is saying but is embargoed at the moment. I think the idea is great and a real solution to the single major (non direct ) issue that current airbags face that is ease of refills when travelling. Obvious caveats would be challenges over use/reliability of rechargeable batteries, fan durability etc etc. Also not sure where the air goes assuming total burial when fan goes into reverse - it is assumed it goes into external airpocket between user and snow but if the fan "exhaust" is blocked?
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fatbob, The whole ease of use when traveling will be down to the issue of, if you can actually take one of these new bags on a flight, the current regulations are written for airbags with cylinders, the cylinder is only part of the problem when it comes to the IATA regs, the fact that there is an airbag in the backpack is one of the issues and the current regs are written for these bags. Its taken 4 years for the IATA to update the regs for cylinder size!
I would love to be more on the inside track on the bags features and how its put together, what size the battery is and what power out put it has to drive a fan at 60,000 rpm ?
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You'll get to see more forums and be part of the best ski club on the net.
You'll get to see more forums and be part of the best ski club on the net.
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livetoski, a standard 6 or 8 cell Lithium poly battery pack would take care of your power requirements and shouldn't raise any eyebrows at the XRay machine. There is nothing here you couldn't do 'off the shelf' - question is, is the kit robust enought to stand getting rolled and hold out.
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I think that was 6000, not 60,000 RPM. Bit of a difference.
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snowHeads are a friendly bunch.
snowHeads are a friendly bunch.
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| Richard_Sideways wrote: |
| Hmm. An interesting idea but I have a doubt. The basic concept is sound, but a fan running at 60000rpm for 3 minutes, in an enclosed space is going to generate a lot of internal heat which it can't dump. |
Warm gases expand to a greater volume therefore fills quicker and condenses as it cools coupled with cooling of high pressure gas movement to low pressure could mean less motor run to empty?
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And love to help out and answer questions and of course, read each other's snow reports.
And love to help out and answer questions and of course, read each other's snow reports.
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| livetoski wrote: |
fatbob, The whole ease of use when traveling will be down to the issue of, if you can actually take one of these new bags on a flight, the current regulations are written for airbags with cylinders, the cylinder is only part of the problem when it comes to the IATA regs, the fact that there is an airbag in the backpack is one of the issues and the current regs are written for these bags. Its taken 4 years for the IATA to update the regs for cylinder size!
I would love to be more on the inside track on the bags features and how its put together, what size the battery is and what power out put it has to drive a fan at 60,000 rpm ? |
yeah but i think there is a big diff between "take the battery out" and "take the explosive trigger gas canister out". It s like turning your iPad off...
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FAQ
its taken the IATA a long time to get lithium batteries listed on their regulations.
