The G-Works R1 Gas Saver – Refilling Backpacking Canisters Ii
Ever notice how expensive the modest canisters of gas are? But the large canisters are inexpensive past times comparing (per gram). Wouldn't it live prissy to pay the large canister charge per unit of measurement for modest canisters? Well, you lot tin – alongside a G-Works Gas Saver adapter.
I latterly walked into a retailer in addition to saw canister gas for $4.95 for 100 grams. Easy math: $4.95 for 100 grams plant out to $0.0495 per gram; that's basically a nickel (five cents) per gram of fuel. OK, hence a nickel isn't that much, but why pay more?
You know that gas is hence much cheaper if you lot purchase the large 440 or 450 g canisters. For example, at Walmart, I latterly saw 440 g canisters for $7.72 or $0.0175 per gram. That's basically ii cents per gram, less than half the cost of gas when sold inwards the 100 gram canister.
Well, I suppose v cents a gram isn't the destination of the world, but wouldn't it live prissy if you lot could purchase gas for ii cents a gram but inwards the modest canisters? I mean, alongside the 440 g size, who wants to comport those big, heavy beasts of a canister around for weekend's worth of hiking? Not me, give cheers you.
Well, you lot can pay the large canister charge per unit of measurement for modest canisters. Yes, that's right, you lot can. You simply quest a G-Works R1 Gas Saver. The G-Works Gas Saver basically hooks upwards ii canisters. When your 100 or 110 g canister runs out, you lot refill from a 440 or 450 g canister. Thus, you lot pay the 440 g charge per unit of measurement for the convenient 100 or 100 g size canister.
Custom Filling
You tin also custom create total canisters to just the amount of gas you lot quest for a given trip. Say you lot quest some 12 ounces of fuel (about 340 g) for a given trip. Well, gas is exclusively sold inwards the U.S. inwards some 4, 8, in addition to xvi ounce sizes (roughly 110, 220, in addition to 450 grams respectively). If you lot desire 12 oz of fuel, you lot guide maintain to purchase xvi oz in addition to comport an extra quarter pound of dead weight. Yes, you lot could flare off the gas, but that's sort of a waste.
Or, you lot could comport 1 8 oz (about 230 g) in addition to 1 4 oz (about 110 g) canister, but recall a 100 g canister of gas weighs 200 g total in addition to 100 g when empty. In other words, the canister weighs every bit much every bit the fuel. So, past times carrying ii canisters, you're carrying a lot to a greater extent than steel, in addition to you're genuinely non saving much weight past times carrying 1 4 oz in addition to 1 8 oz canister when compared to carrying a unmarried 440 or 450 g canister.
For example, I took some total canisters, in addition to lay them on a scale:
The divergence betwixt carrying xvi oz of fuel vs. 12 is exclusively 33 g (1.2 oz) because of the weight of the canisters. The weights betwixt brands of canisters may vary, but these weights should live illustrative. So, carrying 4 oz less inwards fuel saves me exclusively nearly 1 oz inwards actual weight because of those darned steel canisters.
But what if I custom create total an empty xvi oz canister alongside 12 oz of fuel? The weight of the canister does non change, in addition to whatsoever reduction inwards fuel equates to an actual one-to-one reduction inwards weight. If I fill alongside 4 oz less of fuel (113 g), I carry 4 oz less pack weight. Yes, a fleck of fuss to salvage a quarter pound, but recall that if the average backpacker (who carries something similar fourscore to 100 items inwards their backpack) could salvage simply 2 oz on average per item, their pack would weigh on the lodge of ten pounds less overall. Ounces are worth shaving wherever you lot can. And if you're already using the G-Works adapter to pay the 440 g charge per unit of measurement for 110 g canisters, why non not salvage a few ounces of pack weight spell you're at it?
Caution!
Refilling canisters could live dangerous, real dangerous. I'm talking nearly permanent injury, loss of eyesight, disfigurement, in addition to fifty-fifty death.
You volition Federal Reserve annotation that I am non a lawyer. I don't move for whatsoever companionship that could instruct sued here. I'm non some ninny inwards an role who doesn't rate a dang nearly whether you lot alive or decease inwards the dorsum province hence long every bit his companionship can't live sued. I am simply a beau lover of the wilderness. Any alert I rate you lot is realistic in addition to sober. My warnings are non overblown silliness every bit are hence many of today's legal warnings. I'm giving it to you lot straight. If you lot ignore me, you're a dumb ass, in addition to I guide maintain picayune sympathy for you. Don't come upwards crying to me if you lot didn't head my warnings.
In my original post on refilling gas canisters, I listed a serial of precautions. Read my original post on refilling gas canisters if you lot are thinking nearly refilling canisters of your own. Please produce your homework earlier you lot endeavor something similar this. If you lot produce endeavor this, there's a sure enough danger to it, no affair what. You're working alongside highly flammable, explosive gasses. You've been warned.
Transfer from Like to Like
Not all canisters are created equal. Some are stronger than others. When you lot accept canister gas from 1 canister in addition to transfer it into another, you lot desire to construct sure enough that the receiving canister tin guide maintain the resultant pressure. The ideal agency to produce this is to "stay inside the brand." By "within the brand," I hateful transferring Jetboil to Jetboil, Primus to Primus, etc. If you lot transfer gas from a larger canister to a smaller canister of the same brand, you lot already know that the smaller canister tin guide maintain the pressure level from that blend of gas. Note: Some companies, Primus inwards particular, guide maintain dissimilar blends: Summer blend, wintertime blend, etc. For companies alongside dissimilar blends, utilisation a donor canister of the same blend every bit the receiving canister originally held.
If you lot can't notice a donor canister of the same construct every bit your receiving canister, you lot tin cheque on the company's website what blend (percentages of propane, isobutane, in addition to n-butane) the canisters held to insure compatibility, but it's best to rest inside the construct if you lot can. Note that some companies produce non reveal their blend's percentages in addition to that percentages tin modify over time.
Basically though, if you lot transfer from similar to like, you lot minimize the guide chances that the receiving canister can't guide maintain the pressure.
The Procedure
Custom filling/refilling is genuinely fairly simple. I'll listing the instructions below.
Before you lot start, weigh the empty canister. The weight of the canister + the amount of gas the canister originally contained is the maximum condom total weight of the canister. For example, if your receiving canister weighs 116 g when empty in addition to originally held 220 g of fuel, hence your maximum condom weight is 336 g (116 + 220 = 336). The amount of fuel your empty canister originally held should live printed on the label of the canister. If you lot can't read the label, instruct a dissimilar canister. Only utilisation canisters inwards expert status when refilling.
Once you've calculated your maximum condom total weight, produce the following:
1. Place the donor canister into a pan or pot of warm water. I said warm water, non hot water. Do not immerse a canister into hot water. Hot H2O could motility the internal pressure level of the canister to transcend the rating of the canister which could motility the canister to burst. Do non lay the canister inwards the pan spell the pan is on a stove. What if you lot left the stove on for a infinitesimal in addition to got distracted? Take the pot off the stove, in addition to then lay the canister into the warm (not hot!) water.
2. Prepare an H2O ice bathroom inwards a container that tin concur the recipient canister in addition to some H2O alongside ice. You don't desire the grade of the H2O to transcend the meridian of the canister. Keep the connection in addition to Lindal valve expanse of the canister dry.
3. Close the valve on the G-Works Gas Saver adapter.
4. Screw on the empty receiving canister to the Gas Saver.
5. Take the donor canister out of the warm water, dry out it off, in addition to screw the donor on to the other connection on the Gas Saver.
6. Place the receiving canister into the H2O ice bathroom taking attention to continue H2O out of the connection in addition to Lindal valve area.
7. Open the valve on the Gas Saver.
When you lot opened upwards the valve on the Gas Saver, you lot should listen gas flowing from the total donor canister into the empty receiving canister.
8. After you've allow it run for a infinitesimal or so, closed the valve, accept the receiving canister off the G-Works adapter, in addition to weigh the receiving canister. While you're weighing the receiving canister, lay the donor canister dorsum into the pan of warm (not hot!) water. Repeat steps 6, 7, in addition to 8 until the receiving canister is full. Do not transcend the maximum condom create total weight of the canister.
If you've over filled the canister, vent the canister outdoors away from whatsoever oestrus sources or opened upwards flaming using the G-Works Gas Saver alongside 1 destination attached to the over total canister in addition to the other destination non attached to anything. When in that place is no canister attached to the other end, opening the valve on the Gas Saver vents the excess gas into the atmosphere. Alternatively, you lot tin simply attach a stove to the over filled canister in addition to burn downward off the fuel.
That's genuinely all in that place is to it. With the inwards a higher identify described techniques in addition to the G-Works Gas Saver, you lot tin refill or custom create total smaller, lighter, to a greater extent than convenient canisters using larger, cheaper (per gram) canisters.
Versions
There are genuinely several versions of this adapter, all from Peakway.
1) The quondam version of the basic adapter – 28 g (1.0 oz)
2) The novel version of the basic adapter – 36 g (1.3 oz)
3) The "fancy" version alongside what appears to live a pressure level relief valve. I don't guide maintain this version in addition to can't genuinely comment on it.
I'm non sure enough why they switched from the quondam version of the basic adapter to the novel version. I tin meet what has changed, but I don't know the thinking behind the changes. Perhaps it was simply to cut production costs; I don't know.
Concluding Remarks
Be condom in addition to read all the cautions, please. This is expert stuff, but you lot produce quest to live careful.
Take attention in addition to happy stoving,
HJ
Appendix I – Custom Fuel Blends – DANGER
Danger. We straight off depart from anything that mightiness live considered remotely safe. You're completely on your ain hither if you lot produce this. I'm not recommending this to you; I'm simply maxim it's physically possible. Just because you lot can produce something doesn't hateful that you lot should. I guide maintain not done this. It's simply every bit good danged dangerous. Try it at your ain risk. And construct sure enough your Life Insurance is all paid up, if you lot instruct my drift. See photos of canister explosions, below.
What am I talking about? Well, recall my recent post on the other G-Works adapter, the G-Works Propane adapter? With that propane adapter in addition to the G-Works gas saver adapter combined, you lot could add together propane to a backpacking canister.
Never fill a backpacking gas canister alongside 100% propane.
WARNINGS UPDATE, 8 Apr 2017: David, a chemic engineer, has left a serial of remarks downward inwards the comments section, below. I advise that you lot read them in detail if you're thinking of adding extra propane to a backpacking type canister. Personally, I don't think you lot should endeavor to add together propane, but if you're going to endeavor it, construct sure enough you lot read, business past times line, David's comments, below.
Why would you lot add together propane to a backpacking canister? Well, for mutual frigidity weather. Recall that propane is your best fuel for mutual frigidity weather. In the US, the most propane content you lot tin arrive a backpacking canister is nearly 25% or 30% depending on whether it's mixed alongside isobutane or n-butane. You could boost that pct to 35% or 40% if you lot combine the G-Works propane adapter alongside the Gas Saver adapter. No, I don't guide maintain whatsoever photos of this combination. This is real dangerous in addition to I guide maintain not tried it.
If you lot produce add together additional propane to your backpacking canisters, add together the propane last. Why? Well, if you lot add together propane to an empty canister, then, at to the lowest degree for a while, you've got 100% propane inwards there. That could live bad, real bad. Those picayune lightweight (comparatively) backpacking canisters cannot guide maintain the high pressure level of 100% propane. DON'T DO IT. I'm non sure enough you lot should add together propane to a backpacking canister at all, but if you lot do, add together the propane last, afterwards the canister has a manufacturing flora blended fuel mix inwards it.
Never fill a backpacking gas canister alongside 100% propane.
Backpacking canisters are exclusively stiff plenty for partial propane mixes, typically 80/20 isobutane/propane or 70/30 n-butane/propane. Filling a backpacking canister alongside 100% propane risks an explosion. Backpacking canisters simply aren't stiff plenty to guide maintain the real high pressures involved alongside 100% propane.
Never create total a backpacking gas canister alongside 100% propane.
 |
| A G-Works R1 Gas Saver adapter tin assist 1 avoid paying the "convenience charge" of modest canisters. |
 |
| A 100 gram canister of gas ofttimes retails for $4.95. That's a nickel per gram. |
 |
| 440 gram canisters for sale for $7.72 |
Well, you lot can pay the large canister charge per unit of measurement for modest canisters. Yes, that's right, you lot can. You simply quest a G-Works R1 Gas Saver. The G-Works Gas Saver basically hooks upwards ii canisters. When your 100 or 110 g canister runs out, you lot refill from a 440 or 450 g canister. Thus, you lot pay the 440 g charge per unit of measurement for the convenient 100 or 100 g size canister.
Custom Filling
You tin also custom create total canisters to just the amount of gas you lot quest for a given trip. Say you lot quest some 12 ounces of fuel (about 340 g) for a given trip. Well, gas is exclusively sold inwards the U.S. inwards some 4, 8, in addition to xvi ounce sizes (roughly 110, 220, in addition to 450 grams respectively). If you lot desire 12 oz of fuel, you lot guide maintain to purchase xvi oz in addition to comport an extra quarter pound of dead weight. Yes, you lot could flare off the gas, but that's sort of a waste.
Or, you lot could comport 1 8 oz (about 230 g) in addition to 1 4 oz (about 110 g) canister, but recall a 100 g canister of gas weighs 200 g total in addition to 100 g when empty. In other words, the canister weighs every bit much every bit the fuel. So, past times carrying ii canisters, you're carrying a lot to a greater extent than steel, in addition to you're genuinely non saving much weight past times carrying 1 4 oz in addition to 1 8 oz canister when compared to carrying a unmarried 440 or 450 g canister.
For example, I took some total canisters, in addition to lay them on a scale:
| Size | Weight when total (g) | Weight when total (g) | |
| 4 oz | 213 | ||
| 8 oz | 376 | ||
| 16 oz | 622 | Difference | |
| Total | 589 | 622 | 33 |
The divergence betwixt carrying xvi oz of fuel vs. 12 is exclusively 33 g (1.2 oz) because of the weight of the canisters. The weights betwixt brands of canisters may vary, but these weights should live illustrative. So, carrying 4 oz less inwards fuel saves me exclusively nearly 1 oz inwards actual weight because of those darned steel canisters.
But what if I custom create total an empty xvi oz canister alongside 12 oz of fuel? The weight of the canister does non change, in addition to whatsoever reduction inwards fuel equates to an actual one-to-one reduction inwards weight. If I fill alongside 4 oz less of fuel (113 g), I carry 4 oz less pack weight. Yes, a fleck of fuss to salvage a quarter pound, but recall that if the average backpacker (who carries something similar fourscore to 100 items inwards their backpack) could salvage simply 2 oz on average per item, their pack would weigh on the lodge of ten pounds less overall. Ounces are worth shaving wherever you lot can. And if you're already using the G-Works adapter to pay the 440 g charge per unit of measurement for 110 g canisters, why non not salvage a few ounces of pack weight spell you're at it?
Caution!
Refilling canisters could live dangerous, real dangerous. I'm talking nearly permanent injury, loss of eyesight, disfigurement, in addition to fifty-fifty death.
You volition Federal Reserve annotation that I am non a lawyer. I don't move for whatsoever companionship that could instruct sued here. I'm non some ninny inwards an role who doesn't rate a dang nearly whether you lot alive or decease inwards the dorsum province hence long every bit his companionship can't live sued. I am simply a beau lover of the wilderness. Any alert I rate you lot is realistic in addition to sober. My warnings are non overblown silliness every bit are hence many of today's legal warnings. I'm giving it to you lot straight. If you lot ignore me, you're a dumb ass, in addition to I guide maintain picayune sympathy for you. Don't come upwards crying to me if you lot didn't head my warnings.
In my original post on refilling gas canisters, I listed a serial of precautions. Read my original post on refilling gas canisters if you lot are thinking nearly refilling canisters of your own. Please produce your homework earlier you lot endeavor something similar this. If you lot produce endeavor this, there's a sure enough danger to it, no affair what. You're working alongside highly flammable, explosive gasses. You've been warned.
Transfer from Like to Like
Not all canisters are created equal. Some are stronger than others. When you lot accept canister gas from 1 canister in addition to transfer it into another, you lot desire to construct sure enough that the receiving canister tin guide maintain the resultant pressure. The ideal agency to produce this is to "stay inside the brand." By "within the brand," I hateful transferring Jetboil to Jetboil, Primus to Primus, etc. If you lot transfer gas from a larger canister to a smaller canister of the same brand, you lot already know that the smaller canister tin guide maintain the pressure level from that blend of gas. Note: Some companies, Primus inwards particular, guide maintain dissimilar blends: Summer blend, wintertime blend, etc. For companies alongside dissimilar blends, utilisation a donor canister of the same blend every bit the receiving canister originally held.
If you lot can't notice a donor canister of the same construct every bit your receiving canister, you lot tin cheque on the company's website what blend (percentages of propane, isobutane, in addition to n-butane) the canisters held to insure compatibility, but it's best to rest inside the construct if you lot can. Note that some companies produce non reveal their blend's percentages in addition to that percentages tin modify over time.
Basically though, if you lot transfer from similar to like, you lot minimize the guide chances that the receiving canister can't guide maintain the pressure.
The Procedure
Custom filling/refilling is genuinely fairly simple. I'll listing the instructions below.
Before you lot start, weigh the empty canister. The weight of the canister + the amount of gas the canister originally contained is the maximum condom total weight of the canister. For example, if your receiving canister weighs 116 g when empty in addition to originally held 220 g of fuel, hence your maximum condom weight is 336 g (116 + 220 = 336). The amount of fuel your empty canister originally held should live printed on the label of the canister. If you lot can't read the label, instruct a dissimilar canister. Only utilisation canisters inwards expert status when refilling.
 |
| My receiving canister weighs 116 g when empty. |
1. Place the donor canister into a pan or pot of warm water. I said warm water, non hot water. Do not immerse a canister into hot water. Hot H2O could motility the internal pressure level of the canister to transcend the rating of the canister which could motility the canister to burst. Do non lay the canister inwards the pan spell the pan is on a stove. What if you lot left the stove on for a infinitesimal in addition to got distracted? Take the pot off the stove, in addition to then lay the canister into the warm (not hot!) water.
2. Prepare an H2O ice bathroom inwards a container that tin concur the recipient canister in addition to some H2O alongside ice. You don't desire the grade of the H2O to transcend the meridian of the canister. Keep the connection in addition to Lindal valve expanse of the canister dry.
3. Close the valve on the G-Works Gas Saver adapter.
4. Screw on the empty receiving canister to the Gas Saver.
5. Take the donor canister out of the warm water, dry out it off, in addition to screw the donor on to the other connection on the Gas Saver.
6. Place the receiving canister into the H2O ice bathroom taking attention to continue H2O out of the connection in addition to Lindal valve area.
 |
| A G-Works Gas Saver properly hooked upwards alongside ii canisters. The donor canister is on top. The receiving canister is on the bottom, inwards the H2O ice bath. Take attention to continue H2O out of the connection in addition to Lindal valve expanse of the receiving canister. |
When you lot opened upwards the valve on the Gas Saver, you lot should listen gas flowing from the total donor canister into the empty receiving canister.
8. After you've allow it run for a infinitesimal or so, closed the valve, accept the receiving canister off the G-Works adapter, in addition to weigh the receiving canister. While you're weighing the receiving canister, lay the donor canister dorsum into the pan of warm (not hot!) water. Repeat steps 6, 7, in addition to 8 until the receiving canister is full. Do not transcend the maximum condom create total weight of the canister.
 |
| Success! My canister which weighed exclusively 116 g when empty is straight off clearly total of gas, BUT my maximum condom create total weight is 336 g. I quest to vent or burn downward off 10 g. |
That's genuinely all in that place is to it. With the inwards a higher identify described techniques in addition to the G-Works Gas Saver, you lot tin refill or custom create total smaller, lighter, to a greater extent than convenient canisters using larger, cheaper (per gram) canisters.
Versions
There are genuinely several versions of this adapter, all from Peakway.
1) The quondam version of the basic adapter – 28 g (1.0 oz)
2) The novel version of the basic adapter – 36 g (1.3 oz)
3) The "fancy" version alongside what appears to live a pressure level relief valve. I don't guide maintain this version in addition to can't genuinely comment on it.
I'm non sure enough why they switched from the quondam version of the basic adapter to the novel version. I tin meet what has changed, but I don't know the thinking behind the changes. Perhaps it was simply to cut production costs; I don't know.
Concluding Remarks
Be condom in addition to read all the cautions, please. This is expert stuff, but you lot produce quest to live careful.
Take attention in addition to happy stoving,
HJ
Appendix I – Custom Fuel Blends – DANGER
Danger. We straight off depart from anything that mightiness live considered remotely safe. You're completely on your ain hither if you lot produce this. I'm not recommending this to you; I'm simply maxim it's physically possible. Just because you lot can produce something doesn't hateful that you lot should. I guide maintain not done this. It's simply every bit good danged dangerous. Try it at your ain risk. And construct sure enough your Life Insurance is all paid up, if you lot instruct my drift. See photos of canister explosions, below.
What am I talking about? Well, recall my recent post on the other G-Works adapter, the G-Works Propane adapter? With that propane adapter in addition to the G-Works gas saver adapter combined, you lot could add together propane to a backpacking canister.
Never fill a backpacking gas canister alongside 100% propane.
WARNINGS UPDATE, 8 Apr 2017: David, a chemic engineer, has left a serial of remarks downward inwards the comments section, below. I advise that you lot read them in detail if you're thinking of adding extra propane to a backpacking type canister. Personally, I don't think you lot should endeavor to add together propane, but if you're going to endeavor it, construct sure enough you lot read, business past times line, David's comments, below.
If you lot produce add together additional propane to your backpacking canisters, add together the propane last. Why? Well, if you lot add together propane to an empty canister, then, at to the lowest degree for a while, you've got 100% propane inwards there. That could live bad, real bad. Those picayune lightweight (comparatively) backpacking canisters cannot guide maintain the high pressure level of 100% propane. DON'T DO IT. I'm non sure enough you lot should add together propane to a backpacking canister at all, but if you lot do, add together the propane last, afterwards the canister has a manufacturing flora blended fuel mix inwards it.
Never fill a backpacking gas canister alongside 100% propane.
 |
| A stove in addition to pot destroyed past times a canister filled alongside 100% propane. Note how the canister has burst. NEVER fill a backpacking type canister alongside 100% propane. |
Never create total a backpacking gas canister alongside 100% propane.
 |
| A stove in addition to pot destroyed past times a canister explosion. NEVER fill a backpacking type canister alongside 100% propane. |
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