Subscribing for future referrence.

 

Do you guys really freeze over night?

I fill, freeze for 20-30 mins then fill and get 9.5-10lbs

Mother bottle is in a hot (Vegas HOT) garage???

 

is a small filter with just one screen like the ones that come in nitrous kits ok? what filter do you suggest?

 

thats how i fill mine for the most part. some times you will need to freez it 2-3 times. get a good digital scale. also if you put the fill bottel in the sun to warm it it helps.

 

30 minutes of freez will get the pressure pretty good. with that methode it takes 45 to an hour or so minutes to fill it from empty.

 

I know this probably isnt a big deal to you guys but I am pretty sure that when you heat/ cool some metals over and over the metal and rubber peices fatigue much more quickly than they would otherwise.

 

works for me

 

Anyone have a response to this?

Cause I dont wanna get a pump but I prob will.. Also I am thinkin of places where I could steal a few argon or Co2 tanks. I have seen them in the back of places just sitting out there and I wonder how hard it would be to grab my buddies truck and throw a couple in the bed.

 

.

That is true, but Sun warming & freezers at 10 or 20 degrees I'm not worried about. The morons parked next to me in the pits with a torch heating the same spot over & over again on their bottles is what worries me about my families safety when the bottle explodes.

.

 

its real easy. i do it all the time. why not since they just leave them out in the open. almost as if they have a "steal me!" sign on them with my name on it.
i was kidding and hope you were too. this is nitrous, not meth.

 

lol what can I say man I got an adiction to speed and I'll lie cheat and steal to get my "FIX"

Seriously though I worry about the constant heating/cooling of this method and I think a pump is really the way to go, that doesnt meen I wouldent try doing some heating/cooling.

Also is there anything stopping you from getting scuba tanks filled with No2? I know they are good till at least 3000psi. If filled with No2 to 3000psi it would make getting the "in car" No2 bottle to 1000psi really easy.

 

freezing it creates a vacuum in the bottle being filled...i fill 10-15 tanks on the weekends here at the shop...takes 45-60 minutes to get it cold enough (we use an old deep freezer) i can get as much as 12.5 #'s in a 10# tank (not safe i do not recomend doing it) but the colder the tank the easier it is to fill

 

should i use a 4AN line to transfer the nitrous or get a bigger line to connect the bottles. whatever the big thread is on the bottles.

 

Anytime a compressed or liquified gas cylinder has been exposed to 300 degrees or greater in any one spot, the cylinder is considered no longer fit for service and must be discarded. Cooling generally isn't a concern, especially at the temperatures a freezer will hit.

 

1. Scuba tanks are no good because they do not have a dip tube.

2. Nitrous is a liquified gas, so the amount you have in a bottle is not related to the bottle pressure, that's why it's weighed. The pressure of the gas is determined by the vapor pressure, which is affected by temperature. At 70 degrees, its about 650 psi or so. To get to 3000 psi, the bottle would need to be heated several hundred degrees.

3. Steel is not going to fatigue with constant heating/cooling in the range we're discussing.

4. It's N2O, not NO2.

5. If you're a thief, you're a piece of trash in my book.

 

so i picked up my bottle today expecting it to be 100lbs. ends up being a 56lb bottle that cost almost $200 out the door.
i had to get a 4AN line made to connect the two bottles and also an adapter for the larger bottle which is the same size adapter as the NOS 10lb blue bottle. that ran an extra $50 for both.
my first fill at 65-70* outside temp into a completely empty NOS 10lb bottle yielded 6-7 lbs. my scale might be off since the NOS empty is supposed to be 14.7lbs but the scale read 14.0lbs. anyway i got it up to 22.2lbs in less than 10 minutes.
my zex bottle which weighs 14.6lbs empty started at 17.8 since i had some in it. half hour later it's only at 18.8lbs.

does elevating the large bottle help in the transfer?

can i put a bottle that has say 2-8lbs of nitrous left into a freezer? i'm about to clear my frozen foods.

 

It was a joke...take a chill pill


Even if the steel isnt effected by the heating/cooling the rubber peices will be. Isnt the burst disk made of rubber or plastic? how would you like that bad boy failing prematurely??

 

sticking it in the freezer makes a huge difference.about an hour got the small bottle to suck nitrous from the big one real quick. and it works for topping off also.

 

No, the burst disc is a thin piece of metal. If it fails, all that means is the contents of the bottle will be released, there's no hazard associated with it, unless you're foolish enough to sit there in the car for several minutes and get asphyxiated.

Everyday as a living I work with compressed gases that can kill you in the parts per billion range or explode simply by contacting air. We have a number of gases that have to be kept outdoors in the environment, year round. Trust me, there's no concern with a <200 degree swing of temperature on a cylinder.

 

I'm getting ready to sell my NX pump and mother bottles in the for sale section. Can't really beat a pump as far as quick fills, when people come to you they want their stuff done right then most of the time and most don't want to wait 90 minutes. On rare occasions they'll come back and get it later, but for filling your own bottles just freezing and what not works well and is cost effective.

https://ls1tech.com/forums/showthrea...90#post7111190