Comments on: Vaporbag or Electric Avy Airbag? The Arcteryx Patent http://www.wildsnow.com/9006/electric-avalanche-airbag-arcteryx-patent/ Backcountry Skiing Weblog Blog, FAQs, more, links and info about randonnee, telemark and backcountry ski mountaineering. Fri, 24 May 2013 20:14:47 +0000 hourly 1 http://wordpress.org/?v=3.3.2 By: AndyC http://www.wildsnow.com/9006/electric-avalanche-airbag-arcteryx-patent/#comment-50407 AndyC Fri, 25 Jan 2013 16:02:32 +0000 http://www.wildsnow.com/?p=9006#comment-50407 It's also going to be reliant on that little flap valve to keep the air inside the airbags whilst they're being bashed around in a slide. That being said, if it's for real and Arcteryx are going to sell it, we can be pretty sure it will have been tried in a slide or two, strapped to a dummy, so it will probably work. It’s also going to be reliant on that little flap valve to keep the air inside the airbags whilst they’re being bashed around in a slide.

That being said, if it’s for real and Arcteryx are going to sell it, we can be pretty sure it will have been tried in a slide or two, strapped to a dummy, so it will probably work.

]]> By: Ryan http://www.wildsnow.com/9006/electric-avalanche-airbag-arcteryx-patent/#comment-49848 Ryan Sat, 12 Jan 2013 17:34:59 +0000 http://www.wildsnow.com/?p=9006#comment-49848 Where can I contribute to the kickstarter page? Where can I contribute to the kickstarter page?

]]> By: Pablo http://www.wildsnow.com/9006/electric-avalanche-airbag-arcteryx-patent/#comment-49760 Pablo Wed, 09 Jan 2013 10:40:10 +0000 http://www.wildsnow.com/?p=9006#comment-49760 I have serious doubts about the air intakes... As everybody knows, powder snow can stick a lot over every kind of mesh fabrics. In the event os an Avalanche theres a lot of powder flying around and been atracted to the air intakes on the sides of the backpack... I think it's very easy that snow sticks on the air intakes making imposible to the fan to get the air needed to inflate the bagas quickly. The idea is very interesting and I'll be very in to see how is developed I have serious doubts about the air intakes…
As everybody knows, powder snow can stick a lot over every kind of mesh fabrics.
In the event os an Avalanche theres a lot of powder flying around and been atracted to the air intakes on the sides of the backpack…
I think it’s very easy that snow sticks on the air intakes making imposible to the fan to get the air needed to inflate the bagas quickly.

The idea is very interesting and I’ll be very in to see how is developed

]]> By: Vertti http://www.wildsnow.com/9006/electric-avalanche-airbag-arcteryx-patent/#comment-49745 Vertti Tue, 08 Jan 2013 19:37:27 +0000 http://www.wildsnow.com/?p=9006#comment-49745 According to the data provided in the documents, the Electronic speed controller that controls the motor, can give 10s burst of 50A current and 40A continuous. The motor spec says that motor is most efficient at 35A, so most likely can handle higher currents, at leas for short bursts. So, if the battery is 4cell LiPo with 14.8V voltage, that gives 14.8V x 50A = 740W power for 10 seconds and 14.8V x 40A = 592Wcontinuous power. For reference, normal vacuum cleaner is about 1500W, which is optimised probably quite differently, as it needs to create quite strong static pressure(or vacuum actually), and with avalanche bag you most likely want to just move as much air as possible with some static pressure capability to keep the bag inflated. One interesting thing is also the speed of the engine, the spec says that 5100rpm/volt so with 14,8V it would make some 75 000rpm, which is quite high... :D These of course do not tell directly anything about real life performance, but the concept is very interesting and I believe it can be made working also in real life... According to the data provided in the documents, the Electronic speed controller that controls the motor, can give 10s burst of 50A current and 40A continuous. The motor spec says that motor is most efficient at 35A, so most likely can handle higher currents, at leas for short bursts.

So, if the battery is 4cell LiPo with 14.8V voltage, that gives 14.8V x 50A = 740W power for 10 seconds and 14.8V x 40A = 592Wcontinuous power.

For reference, normal vacuum cleaner is about 1500W, which is optimised probably quite differently, as it needs to create quite strong static pressure(or vacuum actually), and with avalanche bag you most likely want to just move as much air as possible with some static pressure capability to keep the bag inflated.

One interesting thing is also the speed of the engine, the spec says that 5100rpm/volt so with 14,8V it would make some 75 000rpm, which is quite high… :D

These of course do not tell directly anything about real life performance, but the concept is very interesting and I believe it can be made working also in real life…

]]> By: Lou Dawson http://www.wildsnow.com/9006/electric-avalanche-airbag-arcteryx-patent/#comment-49735 Lou Dawson Tue, 08 Jan 2013 15:37:36 +0000 http://www.wildsnow.com/?p=9006#comment-49735 Rob, indeed, I'd say 5 seconds would be more like how fast we'd want the bag to inflate, that is unless it can easily finish inflating while being roiled around as the washing machine effect begins and you tumble down the mountain. I kind of have the feeling that inflation time will be hotly debated if and when this sort of airbag comes to market. Rob, indeed, I’d say 5 seconds would be more like how fast we’d want the bag to inflate, that is unless it can easily finish inflating while being roiled around as the washing machine effect begins and you tumble down the mountain. I kind of have the feeling that inflation time will be hotly debated if and when this sort of airbag comes to market.

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