Dave G wrote:Watin' for your Reactor review

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I kinda like the WindPro. What is the weight penalty over the Simmerlite?
What would you think of a Reactor that had a generator tube and/or remote cannister? It's already a bit heavy, though.
This week's review will be the XGK and the Reactor review will immediately follow. A Reactor with a pre-heat loop/generator might be interesting, but that's beyond my ability to rig up, and MSR isn't considering one, so I won't try to address that here. It would be interesting to experiment with but
might be dangerous Very dangerous. As in you could die dangerous.
Simmerlite weight vs. WindPro weight
OK, now to the question of the Simmerlite vs. the WindPro. First, fair warning: Weight comparisons between stoves that use different types of fuel are somewhat problematic as we shall soon see. That being said, here I go plunging in.
The Simmerlite weighs 6.25 ounces. The WindPro weighs 6.8 oz (both on my scale at home). However, you have to carry a pump with the Simmerlite, another 1.9 oz, for a total of 8.15 oz. So the pumpless Windpro has a slight edge by 1.35 ounces.
Now for the tricky part: fuel. An empty 230g SP gas canister (steel) weighs 5.2 oz. An empty 11 oz MSR fuel bottle (aluminum) weighs 2.8 oz without the cap (I never carry the cap in the field; I just leave the pump in the bottle).
So now were at:
WinPro 12 oz.
Simmerlite 10.95 oz.
Assuming that you're carrying equal weights of fuel, the Simmerlite comes in at about 1 oz less.
Of course you have to prime a Simmerlite with some fuel and some fuel is wasted when you detach the fuel bottle. With a Windpro you must also "prime" (allow the stove to fully heat) before you go to inverted canister mode and some gas gets wasted when you disconnect the canister. As a practical matter, more fuel is used in priming and disconnecting with liquid fuel than with gas, so really the weights between the stoves are
amost a wash.
Of course with a liquid fueled stove, if you don't need a full bottle you can bring less whereas you're kind of stuck with whatever sizes of gas canister are available (usually 4oz/113g, 8oz/227g, and sometimes 16oz/450g). If you have to bring a second gas canister, that's usually fairly weight
inefficient whereas bringing the next size larger MSR bottle is usually
increases weight efficiency, weight efficiency being the ratio of "dead" weight (packaging) to fuel.
In conclusion, the stoves are roughly equal in terms of their weight. The real weight advantage or disadvantage arises out of the amount of fuel that you need for a given trip.
Three scenarios:
1. If you have a trip that will use almost exactly one 8oz canister of gas, then the two types of stoves will have
rough parity in terms of weight with a slight edge going to the WindPro since more fuel is wasted with liquid fuel when priming and disconnecting.
2. If you have a trip that will use
less than one 8oz canister of gas, then you're carrying some dead weight in terms of gas that you didn't really need to bring whereas with a liquid fuel stove you can bring only what you need. This difference would generally be relatively small and is partially offset by the fact that it's better to bring a little bit extra fuel. Again, you have rough parity but this time with the Simmerlite having a slight edge.
3. If you have at trip that will use
more than one 8oz canister of gas, then you'll have to carry a second gas canister which will generally be weight inefficient.
The Simmerlite will probably be lighter in this scenario.
In the last scenario, if you can find a 16oz gas canister, this inefficiency would be ameliorated or eliminated, but relatively few retailers carry them. A16 might. I believe REI has stopped carrying them. Big Five and Sport Chalet, last I checked, only carried the Camping Gaz brand of 16 oz canisters which
are not compatible with MSR stoves.
Kind of complicated, but there's my analysis of the weight penalty between the two stoves.
Cost, cooking type, and convenience
In terms of
cost, white gas wins hands down. For about $12.00, you can get an entire gallon of Coleman Fuel. A gallon of fuel will last most people several years. For that same $12.00, you can only get about two 8 oz canisters of fuel. For winter trips, it's not uncommon to use an entire 8 oz canister in one trip, more if it's a longer trip.
For the type of
cooking you do, if you're just melting snow, re-hydrating foods, etc, then the Simmerlite will work fine. If you want to do "real" cooking, then the WindPro is the way to go. This contrast isn't true of all liquid fuel vs. gas stoves, but it's generally true when you're talking about the Simmerlite vs. WindPro.
In terms of
convenience, I think most everyone would go with gas. Liquid fuel, for those of us who have used it for many years isn't that big of a deal, but still gas is cleaner, requires much little or no priming, and starts/stops on a dime.
HJ.