Product Description:

The EtaExpress is one of the new additions to the Eta line of stoves by Primus. Like the other stoves in this line, the EtaExpress is a complete cooking system; however the EtaExpress is sized for one to two people. This cooking system includes a compact, lightweight, auto-ignition (Piezoelectric) stove; a 1.0 L (34 oz) hard anodized aluminum pot (with pour spout); a hard anodized aluminum lid which doubles as a frying pan, a hard-anodized windscreen; a foam-like cloth to protect the inside of the pot; a cloth-like storage bag for the stove itself, and a mesh storage bag for the complete system. The complete system, along with a 230 g (8 oz) fuel canister, may be nested together.

The stove is primarily made from stainless steel. However, there is some plastic near the mixing chamber. The valve knob is also plastic. The stove has three, adjustable, pot supports with serrations to help keep pots in place while cooking. There is a small lever on the backside of the stove which operates the Piezoelectric ignition. The burner is full of small openings. The igniter, which is white in color, extends approximately 1/8 in (0.32 cm) above the burner. There are two "wings" from the female adapter. I assume these are to aid in securing the stove to a canister.

The pot has the Primus logo and the name of the stove painted on one side. The windscreen has Primus and EtaExpress painted on its outer side. The lid/fry pan has Primus stamped on the bottom exterior. Both the pot and the lid/fry pan have what Primus calls a triple layer Titanium non-stick coating on their interior. The pot and lid/fry pan have adjustable handles which are coated in a plastic-like material for insulation.

Primus advertises the EtaExpress as a fast cooking, low fuel consuming, lightweight, eco-friendly stove. Primus touts a 2.5-minute boil time for the EtaExpress, which is fast. The windscreen, the built-in heat exchanger on the bottom of the pot, and an efficiency rating greater than 75% must contribute to this fast boil time. Although Primus does not state what volume can be boiled in 2.5 minutes, I assume it to be one liter (34 oz). Test will prove whether or not my assumption is correct. To achieve the best fuel economy, Primus recommends turning the valve approximately 3/4 open.

The system comes with eight pages of instructions. The instructions are written in English, French, German, Swedish, Finnish, Norwegian, Dutch, Italian, Spanish, Portuguese, and Danish - in that order. The instructions cover safety, assembly, operations, changing cartridges, routine maintenance and several warnings. The warnings include a notice that this stove produces Carbon Monoxide, and should not be used in an enclosed space. There are also warnings about using the stove away from combustibles, avoiding obstruction of combustion and ventilation, ensuring flame is steady and shooting upward, and a final warning against storing the stove attached to a fuel canister.

Initial Impression:

I have not owned an all-in-one cooking system, so I was impressed with the compactness and nest-ability of the EtaExpress. The minimal weight also impressed me. Upon removing it from the storage bag, I was impressed with the size and design of the handles on the pot and lid/fry pan. I was also pleased that the pot and lid/fry pan have a non-stick coating. However, I was a bit disappointed in the diameter of the lid/fry pan. As small as it is, I will be able to fry an egg in it, but will probably not use it for much more.

After removing the items, and briefly looking them over, I began to read the information on the box and in the instructions. Even when I submitted my application, I was a bit concerned at the suggested use: summer, above 5 C (41 F). In Idaho, even in July and August, late evening and early morning temperatures are often below that recommendation. It will be interesting to see how well the stove performs at temperatures below 5 C (41 F).

The materials appear to be first class. The workmanship appears to be high quality. The advertised boil times are enticing. I can hardly wait to get the EtaExpress out in the field to put it to the test.

Initial Testing:

My initial testing consisted of a thorough examination. I intended to light the stove as part of my initial testing. Primus states that the EtaExpress "shall be used exclusively with Primus Propane/Butane/Isobutane mix cartridges 2206, 2202, and 2207." I have been unable to find Primus fuel in Idaho Falls. Consequently, I will be using other brands until I can locate actual Primus fuel.

Primus' key marketing points for the EtaExpress are:

• Very Fast Boiling Times - I plan to test this at home, and at elevation

• Low Fuel Consumption - I plan to see just how much cooking I can get from a single fuel canister

My goal during this test is to see how well the EtaExpress performs in various weather conditions and at various elevations, with various brands of fuel. I am anxious to test the windproofness of the windscreen; the dependability of the auto-ignition; and overall performance of the EtaExpress

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In early May, I took the stove with me on an overnight outing near Idaho Falls, Idaho. The elevation is approximately 4,700 ft (1,433 m) above sea level. The temperatures ranged from the mid 30s to mid 60s (1 - 19 C). Winds were calm.

In late June, I took the stove with me on an overnight outing at the base of the Teton Mountains approximately 10 mi (16 km) east of Driggs, Idaho. The elevation is approximately 6,500 ft (1,981 m). The temperature ranged from 28 F to 72 F (-2 to 22 C) and although the skies were clear, there were 3 in (8 cm) of snow on the ground. Winds were calm.

Observations:

I am very pleased with the light weight and compactness of this stove. The nesting of the pot, stove, wind screen, fuel cannister and lid is very nice. It takes up very little space in my pack. I also like the handles on the lid and the pot.

I am unable to purchase Primus fuel locally. However, the EtaExpress worked well with another brand of fuel. At home, I did a pre-trip fit-up of the stove to the fuel cannister. I had no problem connecting the stove to the fuel cannister. Once connected, the stove lit on the first attempt.

In the field, I was extremely impressed with the boil times. Although I did not have a watch (mine is currently broken) I believe the EtaExpress boiled water faster than any stove I own. I look forward to actually timing the boil time on my next few outings to see just how quickly the EtaExpress does its job. I also plan to measure fuel consumption (based on starting and ending weights of the fuel cannister) on future outings.

The volume of the pot was more than adequate for my individual needs. With the quick boiling times, I can see using this stove and pot even for small groups (two - four).

I did not notice a stability problem with this cooking system. But, I did find relatively flat areas on which to set up. Not sure whether a strong wind would cause problems. I will note any such problems when I encounter wind.

As I only boiled water for noodles and hot chocolate, I did not use the fry pan/lid. Quite honestly, because of its size, the only use I see for me is to possibly fry an egg. We'll see how that goes on another outing. Additionally, I did not need to use the windscreen. However, I fully expect to get that opportunity on upcoming outings and will report on how well it blocks the wind.

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