Friday, April 3, 2026
HomeHikingEvaluation: MSR Reactor 1.7L Range System

Evaluation: MSR Reactor 1.7L Range System


The MSR Reactor range system pairs a canister range with a radiant burner head, a proprietary 1.7 L hard-anodized aluminum pot with heat-exchange fins, and a plastic lid with colander holes. It’s designed to be a near-windproof, high-efficiency cooking system for quick boiling and snow-melting in backcountry circumstances, however may also be used to simmer meals with a bit observe. The identical range may also be used with a number of totally different pot sizes along with the 1.7L model reviewed right here, together with 1.0L and a couple of.5L reactor-specific pots.

  • Weight: 17.6 oz (contains range, pot, and lid)
  • Gas: Isobutane Canister w/screw-on Lindal valve
  • Regulated Range: sure (guide ignition)
  • Boil time: 3 to three:half-hour/liter (relying on water and air temperature)
  • Skill to pack 4 oz. gasoline canister and range head inside pot for transport.

The way it works

MSR Reactor Stove Head
MSR Reactor Range Head

The Reactor makes use of a radiant burner, a flame-free warmth supply, that appears just like the floor of the solar. It’s paired with an anodized aluminum cookpot with a flat backside, heat-exchange fins, and air vents that sits immediately on the burner for superior wind resistance. Gas from a threaded isobutane canister is delivered to the burner by way of a precision-valved regulator and inner strain system that maintains a gradual circulation. The Reactor’s closed design reduces warmth loss to wind and improves gasoline effectivity in contrast with open burners, together with Jetboil stoves. The pot doesn’t lock to the burner meeting like a Jetboil, nonetheless, so it’s important to be very cautious to not topple the pot and spill scorching liquid into your lap.

Boiling occasions

Flat bottom of Reactor Pot
The underside of the pot is flat with warmth alternate fins to retain further warmth.

Boil occasions are impressively quick. MSR advertises about 3 minutes to boil 1 liter of water below splendid circumstances. In real-world use, count on roughly 3-3.5 minutes for 1 liter relying on altitude and  ambient temperature. The Reactor’s windproof and enclosed design makes its efficiency much more constant than typical canister stoves; in chilly or windy climate, it suffers little or no efficiency loss.

Find out how to gentle it

Lighting the Reactor is easy, however guide. I exploit a lighter though a fireplace metal additionally works.

  1. Connect the gasoline canister to the range’s valve by screwing it in till cosy (comply with MSR’s directions and examine for leaks).
  2. Open the valve barely to permit gasoline circulation.
  3. Use a lighter or a match to ignite the burner on the prime of the range. The Reactor’s burner is enclosed, so ignite rigorously and from the aspect if wanted to succeed in the flame.
  4. Regulate the flame with the valve to succeed in the specified output; the built-in regulator offers a gradual flame at the same time as canister strain adjustments. Like all canister stoves, gentle it on secure, degree floor, maintain pot handles safe, and comply with the included security directions.

Snow-melting use

The Reactor is superb for melting snow. Its excessive warmth switch effectivity and regular output make it efficient at melting snow shortly and with comparatively low gasoline use. To keep away from scorching the cook dinner pot, break up the snow and add small quantities of liquid earlier than lighting the range. As a result of the Reactor is designed to work with upright canisters, excessive chilly can scale back canister strain, so maintain the canister heat earlier than use (retailer inside a jacket), use a gasoline combine with a better propane content material for higher cold-weather efficiency, or place the canister in a bowl and add scorching water to it periodically to assist the gasoline inside vaporize.

Simmering

When simmering with the Reactor, its best to stick with very soupy meals with a lot of liquid.
When simmering with the Reactor, its finest to stay with very soupy meals with a whole lot of liquid.

Are you able to cook dinner with the Reactor Range? Sure, with observe and a fragile contact. Whereas the pot’s form is geared towards environment friendly boiling, the warmth exchanger makes simmering attainable however requires observe to handle low gasoline outputs exactly. It’s glorious for dehydrated meals, pasta, soups, and simmered stews. Frying or meals requiring a large, flat pan are much less splendid as a result of the pot is deep and warmth is concentrated.

Reactor 1.7L vs JetBoil Flash 1.8

In contrast with the brand new 18.8 oz Jetboil Flash 1.8L (see the SectionHiker evaluate), the MSR Reactor 1.7L remains to be the extra weather-tolerant and versatile system, however the variations shift barely as a result of weight isn’t a transparent benefit for the Flash 1.8. The Flash delivers very quick boils and is optimized for single-pot cooking in regular circumstances, and its built-in cup/burner nesting makes it handy. Nevertheless, the Reactor handles wind and colder temperatures higher, and its cookware system provides broader floor contact for extra environment friendly heating with a wider vary of pots (1.0L and a couple of.5L, bought individually). Should you prioritize the best possible efficiency in uncovered or chilly environments and need steadier output and higher pot compatibility, the Reactor is the stronger selection. Should you favor the Flash’s particular pot/burner comfort and largely cook dinner in delicate circumstances, it stays an inexpensive different, even when it doesn’t save weight, particularly since it’s so a lot inexpensive than the Reactor.

Backside line

The MSR Reactor with the 1.7 L pot is a best choice for quick, wind-resistant boiling and environment friendly snow melting. It’s user-friendly to gentle and delivers constant boil occasions in various circumstances, whereas additionally serving nicely for a lot of one-pot cooking duties, although not for critical frying or multi-course camp cooking. It’s deal although for solo or small-group backcountry journeys the place velocity, gasoline effectivity, and reliability matter.

 

MSR donated a range for evaluate.

SectionHiker by no means accepts cost for gear opinions or editorial protection. If you purchase by way of affiliate hyperlinks on our web site, we might earn a small fee at no additional value to you. Assist us proceed to check and write unsponsored and unbiased gear opinions, mountaineering and backpacking FAQs, and free mountaineering guides.



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