i have a bca one, and so far so good. at the end of the year, when i pull the cord, it goes off!
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The cans you can get filled at a scuba shop or firehouse uses nothing more than compressed air. Nothing more than a plain old air compressor except much higher psi. You are correct, air temp will affect the pressure. For every 10 degrees F change in temp there will roughly be a change of 82psi. Colder air, less pressure. Warmer air, more pressure.
I am not very versed in the Avy bag world. Mike Duffy (snowww1) would be the go to man for this topic as he works a lot with manufacturers testing products. Maybe he will chime in here.
Mike would be a good one to ask, he has done 2 avy classes for us and is great. I have a ABS pack for this exact reason, psi loss. Not sure if it is a valid reason or not but that got me thinking.
What if you filled them semi cold, say at even 20 degrees. You would have less loss when it got cold and I would think the canister could handle the little bit of extra pressure when it got warm. I don't even know if they can be filled cold or not, just crossed my mind.
To all...thanks for keeping post on track, feel this post has great info for all. What do you all think of the different positions the packs put your body in when in a slide? ABS claims to put you in a prone position vs the turtle on its shell with other bags.
I apologize for leaving out in my post that even tho 82psi sounds like a large number, when you are dealing with numbers in the 1,000's it is not a big deal. As for filling them in the cold it is possible, although not practical because when you fill any bottle the compressing of the air rapidly produces heat itself, as you can feel the bottle getting warm. BCA allows an 800psi range and that is more than enough to compensate for the expansion, retraction of the heat/cold.
In short, there is nothing to worry about when it comes to the air bottles and the cold or warm air.
One benifit about the bca bag is the trigger is on the right side, this allows your right hand to stay on the throttle, and the bag is behind you so it won't obstruct your vision. If you happen to see the avalanche coming down on you, you could deploy the bag and still possibly ride out of the path of the avalanche.
Those 2 things and the price is what made me buy the bca bag.
Mike would be a good one to ask, he has done 2 avy classes for us and is great. I have a ABS pack for this exact reason, psi loss. Not sure if it is a valid reason or not but that got me thinking.
What if you filled them semi cold, say at even 20 degrees. You would have less loss when it got cold and I would think the canister could handle the little bit of extra pressure when it got warm. I don't even know if they can be filled cold or not, just crossed my mind.
BCA supports snowmobiling, ABS does not. Look at their affiliations..not one snowmobile related affiliation. Do 30 seconds of research before you pizz away your money on a company that has no interest in snowmobilig. Here, I'll save you the leg work...http://abs-airbag.de/us/community/professional-partners/ Oh wait, Jean Pierres ski and croissant shop is clearly a snowmobile related company..lmao
To all...thanks for keeping post on track, feel this post has great info for all. What do you all think of the different positions the packs put your body in when in a slide? ABS claims to put you in a prone position vs the turtle on its shell with other bags.
A better point to be made might be BCA is an American company and ABS is German.
Couldn't have said it better myself, BCA will always have my money!
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